The set is designed to cover almost every genre of photography, be it landscapes, architecture, portraits, weddings, sports, travel or even wildlife (with teleconverter). Minimum distance 39 cm. Choose Zip at checkout and own the way you pay. This is Pentax' manual focus macro lens for the Pentax 645, 645N and … Accounts to suit you . These optical glasses have a performance equal to fluorite glass. Reply Reply with quote Reply to thread Complain. Voir plus. The image stabilizer automatically differentiates the frequency of the vibration from that of camera shake, and changes algorithm to correct image blur caused by slight tripod vibration. This lens is also universally suitable for, for example, portrait, landscape and macro photography. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens. Front and Rear Caps. The lens incorporates Intelligent OS with algorithm capable of panning in all directions. Corrects vertical and horizontal camera shake. Translation and/or reproduction of website materials in any form, including the Internet, is prohibited without the express written permission of the website owner. The image stabilizer automatically detects panning and then corrects camera shake only in one direction. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself. The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images. to ensure it is properly sealed against dust and moisture. Introduction top. This enables effectively correcting of various types of aberration for obtaining sharp digital images with high contrast from the infinity end to the minimum shooting distance. Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring. The lens features electronically driven zoom mechanism. MACRO Macro lens. Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format). It practically does not change the characteristics of light beam passing through its central part but absorbs the light at the periphery. Speed of standard and telephoto lenses is taken into account. PENTAX Pentax FA Wide Angle Camera Lenses. Maximum format: Medium format 6x4.5. In Mode 2, the movements of subjects can be captured with panning effects even when the camera is moved horizontally, vertically, or diagonally — regardless of the position of the lens. 15.4-inch minimum focusing distance. You can find these used at these direct product links to Adorama and eBay. Quick-Shift Focus System (QFS) is not available, Focusing distance range limiter (FULL;LIMIT). It boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares. Pentax SMCP-FA 645 FA 55-110 mm f/5.6 Lens **EXCELLENT** Condition. Etat irréprochable, aucune trace d'usure, livré avec les bouchons AV et AR, housse de protection. Was: Previous Price $474.33. Compared with optical glass, fluorite lenses have a considerably lower refraction index, low dispersion and extraordinary partial dispersion, and high transmission of infrared and ultraviolet light. This lens should offer many years of trouble-free operation. A lens typically has a set of marked "f-stops" that the f-number can be set to. For general information on macro lenses, please refer to the article dedicated to the Canon EF 100mm F/2.8 Macro USM lens. In other words, it is set up for macro … The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter. 298,00 EUR. Pentax 645 FA 120 mm f/4 Macro SMC PENTAX-FA for 645d 645z. Suivi par 10 personnes. The effect of the aspherical element is determined by its position within the optical formula: the more the aspherical element moves away from the aperture stop, the more it influences distortion; close to the aperture stop it can be particularly used to correct spherical aberration. Flashs / Modules annexes / Micros. There are 5 wide-angle lenses for Pentax 645Z and 645D cameras. The rotary zooming method means that the change of the focal length is achieved by turning the zoom ring and the manual focusing - by turning the separate focusing ring. Range of focusing distances suitable for shooting nearby subjects. Provenance : Allemagne. SMC FA 645 120mm f/4,0 MACRO. 274,98 EUR. structuresguy • Senior Member • Posts: 1,560 Re: Pentax 645 FA 120mm f/4 macro In reply to photogerald • Nov 3, 2009 photogerald wrote: Silvertooth wrote: Okay, odd … High and specialized-dispersion elements (SR) refract light with wavelengths shorter than that of blue to achieve highly precise chromatic aberration compensation. It is used interchangeably with the more general term field of view. Voir prix € 650. since a lightweight lens group is moved during focusing, manual focusing operation has an extremely light feel, and quick-response autofocusing is possible; the lens length does not change during focusing, which allows to develop more compact and rugged designs; the focusing ring can be placed in the optimum position for focusing and does not move back and forth during focusing; the closest focusing distance can be made shorter than with conventional focusing methods; since the filter attachment ring does not rotate during focusing, convenient use of polarizing filters is possible; since the front part of the lens does not move during focusing, petal lens hoods with good protection from stray light can be used. Téléobjectif. With ultrasonic, linear or stepping motor it is possible to achieve very fast and virtually silent autofocus. Provenance : Allemagne. As a result, pancake lenses are now also available in wide-angle and short-telephoto variations. The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. Attaches to the bayonet fitting on the front of the lens barrel and locks in place with a twist. Lenses with apertures opening f/2.8 or wider are referred to as "fast" lenses. Production status: Discontinued. A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock (friction lock) type. Mirror lock-up must be activated prior to mounting the lens; otherwise its rearmost element would be in the way as the mirror flipped up and down during exposure. With glassless adapter, you will loose the ability to focus at infinity. They are also significantly lighter than optical glass. Free shipping. Back to the top. However, it is also expensive, large and heavy. livraison: + 32,99 EUR livraison [Top Mint] SMC Pentax … The lens was designed for use with 35mm film SLR cameras with the mirror locked in the up position. 3 users rated this 4 out of 5 stars 3. Oui. Digital sensors are usually smaller than 35mm film, and this causes the lens to have a narrower angle of view than with 35mm film, by a constant factor for each sensor (called the crop factor). Provides correction of aberrations and ensures constantly high image quality at the entire range of focusing distances from infinity down to the closest focusing distance. Autofocus lens with mechanical coupling with camera and MTF program line support. Fast speed. item 7 SMC Pentax FA 645 120mm f/4 Macro Lens w/ Lens Hood For 645N NII from Japan - SMC Pentax FA 645 120mm f/4 Macro Lens w/ Lens Hood For 645N NII from Japan. From Japan Brand: PENTAX Series: Pentax FA Mount: Pentax 645. Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Organic Blue Spectrum Refractive Optics material (BR Optics) placed between convex and concave elements made from conventional optical glass provides more efficient correction of longitudinal chromatic aberrations in comparison with conventional technology. Autofocus macro lens. 12 watching. On completion of the exposure, the diaphragm re-opens to its maximum value. Pentax smc FA 645 120mm f/4 Macro Lens. Corrects vertical and horizontal camera shake. Non. Panning is not detected. Get it in front of 160+ million buyers. Pentax 120mm F/4 SMC FA Macro Lens For Pentax 645 System {67} BGN. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film. Allows to perform final focusing manually after the camera has locked the focus automatically. Anomalous partial dispersion elements (AD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. In general, the smaller the aperture (the larger the number), the greater the distance from the plane of focus the subject matter may be while still appearing in focus. Pancake lenses get their name due to the thin and flat size. 1 699,00 € 1 699,00 € livraison incl. Got one to sell? Rapport macro 1:1. Lens Hood. These incompatibilities are probably due to the desire of manufacturers to lock in consumers to their brand. Automatique et manuelle. First pancake lenses appeared in the 1960s and were standard prime lenses based on the famous Tessar design – a brilliantly simple design which was developed by Paul Rudolph in 1902, patented by Zeiss company and provided a good optical performance. Ratings and Reviews. The convex front element protrudes from the lens barrel, making it impossible to use filters. Filter size 67 mm. SMC PENTAX FA 645 200 mm f 4 Prime Lens 4191240 + Warranty. Attaches onto the front of the lens with a spring-type retainer ring. Type: Macro/Close Up Brand: PENTAX Series: Pentax FA. Attaches to the lens barrel behind the front rim. Envoyer are always incompatible. Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images. The push/pull zooming method means that the change of focal length and the manual focusing is achieved by one and the same ring. 15,90 EUR de frais de livraison. Excellent for portraiture. Leboncoin Voir prix. New SMC PENTAX FA645 FA 645 75mm F2.8 for 645N 645NII 645D 645Z Medium Format . The Pentax 120mm f/4 Macro FA645 Mount Lens The Pentax SMC FA 645 120mm f/4 Macro is macro/short-telephoto lens that’s compatible with the Pentax 645D/645Z. Diffraction elements (DO, PF) cancel chromatic aberrations at various wavelengths. Vitry-sur-Seine. To avoid this, Canon, as the manufacturer most widely using fluorite in its telephoto lenses, never uses fluorite in the front and rear lens elements, and the white coating is applied to the lens barrels to reflect light and prevent the lens from overheating. The multi-layer coating is applied to the surface of lens elements. Slide {current_page} of {total_pages} - You May Also Like. ou Offre directe. The maximum aperture opening tends to be of most interest, and is always included when describing a lens. Format refers to the shape and size of film or image sensor. 5 neufs et reconditionné à partir de 321,00 EUR. The smc FA 645 120mm f/4 Macro Lens from Pentax is a medium format, manual and autofocusing, short telephoto/portrait prime lens that provides a 35mm equivalent focal length of 96mm when used on a Pentax 645D or 77mm on a film 645 camera. Typically, a fast shutter will require a larger aperture to ensure sufficient light exposure, and a slow shutter will require a smaller aperture to avoid excessive exposure. A device called a diaphragm usually serves as the aperture stop, and controls the aperture. Weather sealed lenses contain a rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats. Note that you don't have to switch camera and/or lens to manual focus mode. January 2009 more Pentax reviews . SMC PENTAX A 645 120 mm f4 MACRO pour MF Prime Lens 4107034 . The cameras shown in the pictures are not part of this lot. Synthetic fluorite elements (FL) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Some manufacturers may offer adapters for this mount in variants with or without magnifying glass. SMC Pentax-FA 645 120mm F4 Macro lens reviews and detailed specifications. Trépieds / Monopodes / Fixations. You May Also Like. This effect usually appears as "onion-like" texture of concentric rings or "wooly-like" texture and is caused by very slight defects in the surface of aspherical element. A lens mount is an interface — mechanical and often also electrical — between a photographic camera body and a lens. Diaphragm type: Automatic. 2. It is often thought that image blur caused by camera shake can be prevented by using a tripod. In addition to the mechanical and electrical interface variations, the flange focal distance from the lens mount to the film or sensor can also be different. Je vends mon objectif macro destiné aux Pentax pentax fb-1 system finder+pentax fc-1 + pentax fd-1 + pentax fd-2 dans un état irréprochable . Allows a continuous shooting frame rate and release time lag similar to those that are possible when image stabilizer is turned off. Type de mise au point. AU $782.50 + AU $46.02 shipping . This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. After usage, the lens hood can be mounted in reverse for transportation or storage. Avant réduction : 679,00 EUR. C $41.14 shipping. The Pentax FA 645 120mm f/4 SMC Macro Lens is a medium format, manual and autofocusing, short telephoto / portrait prime lens that provides a 35mm equivalent focal length of 96mm. A technology used for reducing or even eliminating the effects of camera shake. 128,61 EUR. APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2. Pentax FA 645 120mm f/4 Macro Lens 26735 • Short telephoto/portrait prime lens • Treated with super multi coating • Magnification ratio of 1:1 $2,243.15 SAVE 15% NO STOCK BACKORDER NOW 21450. For this reason, a 1:1 ratio is often called "life-size". It provides smoother, more natural zoom movements than you could accomplish by hand. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. 0 users rated this 3 out of 5 stars 0. Moreover, the use of linear or stepping motor ensures smooth continuous focusing which makes lenses with such types of motors ideal for video recording. Free delivery and returns on eBay Plus items for Plus members. Fits on Pentax 645 analogue, 645D and 645Z. Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. Automatic – the actuating lever in the camera, operated by the shutter release, closes the diaphragm down during the shutter operation. Share. Sigma DG 70-300mm f/4.0-5.6 AF DG Lens For Pentax KAF … A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. C $271.55. From Japan. Leboncoin. 66 avis. SMC Pentax-A 120mm f/4 Macro. High refractive index element can substitute one or several regular elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses. Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.). Type. It sort of softens the edges of the aperture making the transition from foreground to background zone very smooth and results in very attractive, natural looking and silky smooth bokeh. Its most obvious feature is that it limits the amount of light that can reach the image/film plane. It boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares. Shop today! Optique dédiée vidéo. Oui. A lens is not considered to be "true" macro unless it can achieve at least life-size magnification. The Pentax SMC FA 645 120mm f/4 Macro is macro/short-telephoto length lens that’s compatible with the Pentax 645D and 645Z.Key features include: True 1:1 macro capability. Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc. Apodization element (APD) is in fact a radial gradient filter. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value. This is a macro lens that enables 1:1 shooting at a minimum shooting distance of 39.5cm. Soft Lens Case. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Diamètre filtre (mm) 67. See all 18. [MINT] SMC PENTAX FA 645 120mm f/4 Macro Lens + Hood For N NII From Japan. Non. Advanced optical design for high-quality images The lens features focusing distance range limiter which allows to choose between the following focusing distance ranges: By setting the suitable focusing distance range, the actual autofocusing time can be shorter. Historically, there are four different types of diaphragm: Manual – the diaphragm must be stopped down manually by rotating the detent aperture ring. Depuis le 28/10. Envoyer OU Annuler. Have an old camera you don’t need anymore? For lenses with collapsible design, the length is indicated for the working (retracted) state. For ultra wide angle prime lens, the Pentax smc DA 25mm f/4 … Motorisation Sonique. Neat Pentax 120mm Macro. Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. Since being returned, the lens and ancillary components have been carefully checked by Pentax technicians to ensure optimum operating performance. SMC Pentax 645 A 35 mm 1:3,5 * Top * Neuf dans sa boîte * 645n * 645nii * 645d * 645z * 652,00 EUR. Notre boutique utilise des cookies pour améliorer l'expérience utilisateur et nous vous recommandons d'accepter leur utilisation pour profiter pleinement de votre navigation. The change of focal length happens when the photographer moves the ring towards the mount or backwards and the rotation of the ring leads to change of focus. Actually, however, even using a tripod may result in image blur because of tripod vibration caused by mirror or shutter movement at the time of exposure. Mount: Pentax 645. FA Autofocus lens with mechanical coupling with camera and MTF program line support. This value is also known as the lens "speed", as it affects the exposure time. The other distinctive features are fixed focal length and light-weight barrel. The diaphragm functions much like the iris of the eye – it controls the effective diameter of the lens opening. 12,90 EUR de frais de livraison. 35mm is the common name of the 36x24mm film format or image sensor format. Stabilisation. Effective for following fast and irregulary moving subjects. Fastens to the front thread of the lens barrel. The lens hood features a slide-out window which enables rotation of polarizing filter without removing the lens hood. Automatically detects panning and then corrects camera shake only in one direction. After usage, the lens hood can be mounted in reverse for transportation or storage. Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. 631,47 EUR. Descriptif. The set typically consists of a 16-35mm ultra-wide angle zoom lens, a 24-70mm standard zoom lens and a 70-200mm telephoto zoom lens and usually represents the best constant-aperture zoom lenses in a manufacturer's lineup. Flexible repayments. It is confined to cameras where the body allows interchangeable lenses, most usually the rangefinder and SLR cameras. This technology results in smaller and lighter lenses in comparison with traditional designs with no compromise in image quality. Provenance : Allemagne.   It is recommended to use a filter for complete weather resistance when desired. Applied to the outer surface of the front and/or rear lens elements over multi-coatings. Read honest and unbiased product reviews from our users. Dis­po­nible sous 3 à 7 jours (sauf en cas d'in­dis­po­ni­bi­li­té chez le four­nis­seur) La Poste Chronopost Colissimo GLS. Skip to the end of the images gallery . Choose how you pay - weekly, fortnightly or monthly. The lens extended into the SLR's mirror box when mounted. Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) Frais de livraison : à partir de 0,00 € Détails. Push/pull zooming allows for faster change of focal length, however conventional method based on the rotation of the zoom ring provides more accurate and smooth zooming. Pre-set – the lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. Determines how large the subject will appear in the final image. vends appareil photo numérique pentax k7 + objectifs argentiques adaptables de la série pentax-a smc . A lower f-number denotes a greater aperture opening which allows more light to reach the film or image sensor. Ouverture maxi (f/) 4. PENTAX SMC … The aperture stop is an important element in most optical designs. Etat irréprochable, aucune trace d'usure, livré avec les bouchons AV et AR, housse de protection. Corrects vertical and horizontal camera shake when shooting from a moving vehicle, or some other unstable position. | Browse our daily deals for even more savings! Use of aspherical elements has its downsides: it leads to non-uniform rendering of out-of-focus highlights. Complete with front and rear caps and lens hood. Corrects vertical camera shake during following shots in a horizontal direction. OU  Key features include: Dedicated Macro Lens. Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Find helpful customer reviews and review ratings for Pentax smc FA 645 120mm f/4.0 Macro Lens at Autofocus macro lens. Non. In this case f/1.4 is the maximum aperture (the widest opening), and f/22 is the minimum aperture (the smallest opening). The accuracy of autofocus does not depend on type of used autofocus motor but depends on focusing method (contrast or phase detection), autofocus algorithms, lighting conditions and other factors. Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Your comment is submitted. For example, if you are shooting at focal length of 80mm and it is known that the efficiency of image stabilizer is 3 stops, it means that during handheld shooting at such focal length you can use shutter speed of 1/10 second which is exactly 23 times longer than the shutter speed 1/80 second needed to obtain sharp image in sufficient lighting conditions. Photographic lenses carry out focusing using one of the following five methods: Methods of internal and rear focusing have the following advantages: Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting. ""Mint"" Smc Pentax-Fa 645 120mm F/4 Macro Lentill ""mint"" smc pentax-fa 645 120mm f/4 macro. Autofocus. smc Pentax-FA 645 120mm F/4 Macro Macro lens • Digital era SMC The multi-layer coating is applied to the surface of lens elements. The efficiency of image stabilizer is measured in stops and each stop corresponds to a two-times increase of shutter speed. New Pentax FA SMC 28-80mm F/3.5-5.6 Zoom Silver Lens. A separate optical viewfinder had to be mounted on the accessory shoe to confirm angle of view, because when the mirror is in the up and locked position, the subject is no longer visible through the viewfinder. High-end lenses will have a constant aperture, such as f/2.8 or f/4, which means that the relative aperture will stay the same throughout the zoom range. The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus. Modern still camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens. Monture (appareil) Pentax | 645. A knurled screw tightens a retaining ring, holding the hood firmly to the lens. The new released Pentax 28-45mm f/4.5 ED AW SR lens is one of the best choice for wide-angle photography. This type of lens hoods is the fastest to attach. Ken. enlarge. The choice is yours, however the only right way to adapt this lens is to use a mirrorless camera. Refurbished lenses are returned to Pentax by retailers and may have minor marks. This Macro lens features SMC (super multi coating) that significantly increase the amount of light transmitted by the lens. A more typical consumer zoom will have a variable maximum relative aperture, since it is harder and more expensive to keep the maximum relative aperture proportional to focal length at long focal lengths; f/3.5 to f/5.6 is an example of a common variable aperture range in a consumer zoom lens. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value. High refractive index elements (HR, HRI, XR etc) minimize field curvature and spherical aberration. Announced: 1986. ou Offre directe. 18,00 EUR de frais de livraison. Pentax smc FA 645 120mm f4.0 Macro. Element - an individual piece of glass which makes up one component of a photographic lens. Write a review. Copyright © 2012-2020 Evgenii Artemov. New PENTAX D FA 50mm F2.8 MACRO Auto Focus Lens K Mount. Intro Specs Performance Usage Recommendations. High-refraction low-dispersion elements (HLD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Compare Model Add to Wish List. Got one to sell? PENTAX Objectif smc FA 645 120 mm f/4,0 macro -

Petit téléobjectif AF et manuel pour moyen format PENTAX de haute qualité bien adapté au portrait avec sa focale correspond…Voir la présentation CF – crop-factor of a sensor,FL – focal length of a lens. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Le 645Z reste compatible avec la flotte d’objectifs moyen-format de Ricoh Pentax : SMC-FA 645 75mm f/2.8; SMC-FA 645 45mm f/2.8 ; SMCP-FA 645 150mm f/2.8; SMCP-FA 645 300mm f/5.6 ED; SMC-FA 645 400mm f/5.6 ED; SMC-FA 645 ZOOM 45-85mm f/4.5; SMCP-FA 645 120mm f/4 MACRO; SMCP-FA 645 200mm f/4; SMCP-FA 645 80-160mm f/4.5; SMCP-FA 645 33-55mm f/4.5 AL; SMCP-FA 645 ZOOM 150 … So this 645 120mm/f4 lens will behave the same on a DSLR. This is a medium telephoto macro lens with a wide working distance for capturing the intensity of closeups of flowers or insects in outdoor settings. With glass adapter, the image quality will suffer, especially with fast lenses at large apertures (the most common adaptation and use case). Mainly effective for shooting still subjects. With a 35mm focal-length equivalent to 94mm after the sensor-crop factor, the 120mm f/4 Macro offers users true 1:1 macro capability. 15,90 EUR de frais de livraison. Pentax FA Telephoto Camera Lens . Dynamic IS activates automatically when the camera is set to movie shooting. Medium format film SLR cameras with Pentax 645 mount (3): Medium format digital SLR cameras with Pentax 645 mount (2): ProLon gives you reset in just 5 days by providing the benefits of fasting without having to skip a meal! Titre de l'avis * Votre avis * Votre nom * * Champs requis. Canon's Super UD, Nikon's Super ED, Pentax' Super ED, Sigma's FLD ("F" Low Dispersion), Sony' Super ED and Tamron's XLD glasses are the highest level low dispersion glasses available with extremely high light transmission.

pentax smc fa 645 120mm f/4 macro lens

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