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45-471: The Pentax ME had a 0.97× viewfinder, covering 92% of the field. The finder screen was fixed, with a split image and a microprism ring in the center. The shutter speed chosen by the camera was displayed in the finder, the aperture was not. There was a hot shoe on the top of the prism and a self-timer. The selector around the release button had four positions: L (lock), Auto, 100X (1/100, X sync) and B. The Pentax ME could attach an external winder ME I (1.5 i/s) or

90-402: A binary 1 or 0, respectively. Two contacts encode the lens's minimum aperture— f /16 , f /22 , f /32 or f /45 ; although no Pentax K-mount lens has ever had an f /16 minimum aperture, OEM lenses often have. The other three contacts encode the lens's maximum aperture; their meaning is dependent on the minimum aperture indicated by the lens. (There are at least 2 newer lenses that have

135-523: A lens originally intended for Leica Rangefinder cameras is used, focusing is limited to about 10 cm. However, some SLR lenses were made in LTM 39 mount, mostly by KMZ for use in the early Zenit SLRs which had LT 39 mounts. These "Zenit" TM 39 lenses will focus properly. Or these lenses can be used in conjunction with the M42 to LTM 39 adapter. Adaptors can be found to allow use of a non-Leica 39 mm mount into

180-639: A manual mode to the feature set of the ME. Since the ME Super was a better-specified camera than the ME, a second model was introduced at the same time as the lower-end replacement for the ME: the short-lived Pentax MV model, quickly replaced by the Pentax MV1 . The ME Super has an electronic focal plane shutter with metal curtains and a vertical movement. Shutter speeds are selected with up and down buttons rather than

225-401: A mechanical stop-down coupler/indicator and thus can only use stop-down metering on pre-A lenses. The K A2 is identical to K AF , but lacks the autofocus drive shaft. Another way of looking at it is that it adds the seventh contact for digital information to the K A -mount. The K AF3 -mount is used on Pentax lenses that solely rely on SDM or DC autofocus motors. It is identical to

270-412: A minimum aperture of only f/16: HD D FA 85mm F1.4 and HD D FA* 50mm F1.4. https://www.pentaxforums.com/lensreviews/hd-pentax-d-fa-85mm-f14-sdm-aw.html and https://www.pentaxforums.com/lensreviews/hd-pentax-d-fa-50mm-f14-sdm-aw.html ) The K AF -mount was Pentax's second and much improved attempt at adding auto-focus to lenses. It adds a small drive shaft to the K A -mount, allowing the body to adjust

315-959: A modern-day cult reputation, including the (Pentax) Asahi Takumar range. Some manufacturers, including Carl Zeiss AG , still make lenses in the M42-mount. K-mount cameras have a suitable flange focal distance (45.46 mm) to adapt old M42 lenses without any optical correction or loss of infinity focus/changed close focus distance. Other SLRs with a short flange-focal distance can accept M42 lenses as well: Canon EF-mount (44.00 mm), Sony and (Konica) Minolta A-mount (44.50 mm), Sigma (44 mm), Olympus 4/3rd (38.67 mm), and many more, but notably not Nikon F-mount (46.5 mm). Optically corrected adapter to use Nikon AIS AI lenses on K-mount. Adapter for Voigtländer Bessamatic and Voigtländer Ultramatic lenses, Kodak Retina Reflex , or Kodak Retina IIIs lenses. There are some Petri adapters to K-mount but they do not allow to infinity focus due to

360-413: A number of evolutions over the years as new functionality has been added. In general, the term K-mount may refer to the original K-mount, or to all its variations. Originally designed by Zeiss for an alliance with Pentax, it was intended to be a common lens mount for a proposed series of cameras and lenses. However, the plan failed to work out and the two firms parted company amicably, but Pentax retained

405-730: A number of lenses for the K-mount through its sales network. These lenses were in fact made by Sigma in Japan. The "real" 35 mm East German made Carl Zeiss Jena Lenses were available at the same time but only in Praktica B-mount. Carl Zeiss is one of the most prestigious names on the photographic world; it re-launched its line of lenses for the K-mount in 2008, mainly due to the growing popularity of both Pentax and Samsung digital SLRs . Carl Zeiss announced in September 2010 that

450-487: A recent firmware update the original K3 can use the new mount. All digital K-mount Pentax SLR bodies as well as some lower-end film cameras lack the ability to read the position of the aperture simulator. This means that lenses that lack the lens information contacts introduced with the K A -mount (Pentax K- and M-series lenses as well as some third-party products) do not support open-aperture metering on these bodies. Instead, stop-down metering must be carried out by pushing

495-531: Is a highly successful 35 mm single-lens reflex camera produced by Pentax of Japan between 1979 and 1984. The camera was a development of (and one of two replacements for) the Pentax ME . Both feature semi-automatic (aperture priority) operation, and are part of the Pentax M series which included the manual Pentax MX and briefly the semi-automatic, automatic-focus Pentax ME F . The ME Super added

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540-528: Is a trade mark of Ukrainian lens manufacturer Arsenal, Kiev. Beroflex seems to have been a German commercial firm of photographic lenses;information is scarce yet but it appears that it designed lenses made overseas by Japanese companies like Soligor . Carl Braun Camera-Werk of Nuremberg, Germany, or Braun, as it was more commonly called, was founded as an optical production house. It is best known for its 35mm film cameras named Paxette, and for slide projectors named Paximat. Carl Zeiss of East Germany marketed

585-445: Is compatible with all other K-mount cameras and lenses when in manual or aperture-priority exposure modes, however the extra pin needs to be removed for safe use on autofocus Pentax cameras, as it can otherwise become locked within the autofocus shaft. Lenses locked to the camera body this way are difficult to remove and may require complete dismantling. Adaptors can be found to allow use of lenses with Leica M39 thread (screw) mount. If

630-400: Is derived from the original K-mount. It allows the lens's aperture to be set by the body, and thus permits shutter priority and program auto exposure modes. It was introduced in 1983, and is supported by A-series and P-series bodies; Pentax lenses that support it are marked 'SMC Pentax-A'. It is completely backward-compatible with the original K-mount. The aperture on the lens is set from

675-524: Is displayed in the finder, the aperture is not. LEDs display the shutter speed and inform of over/under exposure, possibility of shake, use of the EV-compensation and use of Manual mode. Pentax ME Super supports a manual ISO range from 12 - 1600 ASA which can be configured using a dial located on the top of the camera. The selector around the release button has five positions: L (lock), Auto, M (manual), 125x, and B. The Pentax ME Super can attach to

720-449: Is great debate in the Pentax community over the applicability and safety of adapters other than those supplied by Pentax. Many users of third-party infinity-focus adapters, such as Bowers, report difficulty in removing the adapters from camera bodies. Such adapters may require modification before they may be safely used. Official Pentax adapters, and flanged non-infinity-focus adapters, do not provoke such problems. Many old M42 lenses have

765-505: Is the same as the K AF -mount except that it adds two extra power contacts to the inside of the mounting ring and transmits modulation transfer function (MTF) data through the digital seventh contact. The power contacts were originally used for power zooming. Since the introduction of the K10D digital SLR model, they are mainly used for powering Silent Drive Motor and DC motor lenses. The K10D / K100D Super and later cameras do not have

810-801: Is this lever. It allows the diaphragm to close to the desired setting while the film is being exposed, and opens it again after the shutter closes. Both of these linkages are arranged so that they are aligned and spring-loaded by the act of inserting the lens and turning it until it locks. Bodies equipped with the original K-mount include the K series, the M series except the ME F, and the LX . Lenses that support it include those labelled 'SMC Pentax', 'SMC Pentax-M' and 'SMC Pentax-A'. These K-mount bodies cannot use lenses that lack an aperture ring, such as FAJ or DA. K-mount lenses can be used on all Pentax bodies, but are restricted to stopped down mode when used with "crippled" K AF -mount bodies (see below). The K F -mount

855-464: Is transmitted digitally through the data pin and the aperture is stopped down through a motor built into the lens. It also introduced a new type of autofocus motor, designated PLM or Pulse Motor . At the time of its introduction, the following Pentax DSLR bodies were compatible with the new mount: K-70 , K-50 , K-S2 , K-S1 , K-1 , K-3 II , with all but the K-70 requiring a firmware update. Also after

900-473: The K bayonet mount , and a series of SMC Pentax-M compact lenses were introduced during the lifetime of the M series models. The body was available with a chrome or black finish on the upper parts and base (the central body being always black). There was a special edition called ME Super SE , only sold in chrome finish; the differences are the SE marking and the diagonal instead of horizontal split-image device in

945-468: The Pentax Super-A , contributing to the long-lasting popularity of the ME Super. Two LR44 (or equivalent) batteries power the camera. The camera has a 0.95x viewfinder, covering 92% of the field. The finder screen is fixed, with a split image and a microprism ring in the centre. The exposure meter is a TTL open aperture centre-weighted type. The shutter speed chosen by the camera or the user

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990-492: The "PK-mount", is a bayonet lens mount standard for mounting interchangeable photographic lenses to 35 mm single-lens reflex (SLR) cameras . It was created by Pentax in 1975, and has since been used by all Pentax 35 mm and digital SLRs and also the MILC Pentax K-01 . A number of other manufacturers have also produced many K-mount lenses and K-mount cameras. The Pentax K-mount has undergone

1035-644: The Adaptall-2 web site. Manual focus Auto focus A lot of Sears cameras were made by Ricoh or Chinon and use the Pentax K-mount. Some are simply rebadged models, while others are quite different. Angenieux a lens manufacturer in France , mainly known for its movie equipment than for photographic lenses, but it has built optics for Leica , Nikon , Canon and a few K-mount lenses. The Agfa K mount cameras were rebadged Chinons. Arsat

1080-515: The K AF2 , but lacks the screw-drive autofocus drive shaft. Another way of looking at it is that it adds the power zoom/in-lens autofocus motor contacts to the K A2 mount. The K AF4 -mount was introduced in June 2016 with the HD Pentax-DA 55-300mm F4.5-6.3 ED PLM WR RE lens. It is identical with K AF3 , apart from the missing aperture control lever. Instead, aperture control information

1125-426: The K-mount, typically as a M39-M42 adapter ring that is mounted in a M42-PK adapter; they may focus to infinity. Pentax supplies adapters to fit M42 screw-mount lenses, as do several third-party manufacturers. The M42 screw-mount system was used by Pentax prior to the introduction of the K-mount. Pentax designed the K-mount wide enough to allow an adapter to fit between the M42 thread and the K bayonet. They also kept

1170-616: The ZK lenses would be discontinued that year. [1] Cima Kogaku had a patented system that allowed them to build common lens bodies, and add the appropriate lens mount at the factory. The Pentax version was only K-mount, not KA-mount. They mostly sold their lenses on an OEM basis, with them sold under a variety of different brands. In the UK, they were sold by Photax as Super-Paragon PMC lenses. Tokyo Kogaku sold them as AM Topcor lenses for their Topcon RM300 camera. Cima Kogaku also sold them directly under

1215-421: The bayonet ring. One is slightly recessed and allows the lens to indicate whether the aperture ring is set at 'A' or not. If it is, a pin on the lens extends slightly and makes contact, while if the lens is at any other setting the pin is retracted and does not make contact. The other five contacts are used to encode the lens's aperture range. Each contact on the lens is either conducting or non-conducting, providing

1260-404: The bayonet tabs on the lens allows the stop-down coupler from the camera to sense the aperture setting on the lens and adjust the light meter display accordingly. Opposite this is the diaphragm release from the lens which extends into the camera body and holds open the spring-loaded diaphragm of the lens. When setting up a shot this keeps the diaphragm fully open. When the shutter is released, so

1305-541: The body by the same stop-down lever found on the original K-mount, but on K A -lenses this lever is proportional to the area of the aperture opening, rather than the diameter as on previous lenses. This allows the body to easily set a specific aperture, since the relationship to F stops is linear. The lenses add an 'A' setting on the aperture dial, which gives the body control of the aperture. Other, numeric settings are used for manual aperture modes— aperture priority and full manual mode. Six electrical contacts are added to

1350-451: The bottom which tells the body when the aperture ring has been set to the "P" setting (similar to the "A" setting on Pentax K A lenses). The 'P' setting is not compatible with the 'A' setting as the 'P' pin is in a different location than the 'A' contact on Pentax 'A' lenses and the flange on Pentax bodies. The R-K-mount is used on Rikenon P lenses, Ricoh bodies that include the letter 'P' in their model number, and some non-Ricoh lenses. It

1395-880: The chrome finish. It was followed in 1979 by the more advanced Pentax ME Super and the cheaper Pentax MV . [REDACTED] Media related to Pentax ME at Wikimedia Commons This article was originally based on one in Camerapedia, retrieved at an unknown date under the GNU Free Documentation License . Mount:       K       |      KF      |      KA      |     KA2     |     KAF     |    KAF2    |  " Crippled "  |   Autofocus   Pentax ME Super The Pentax ME Super

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1440-410: The conventional wheel. They run from 4 seconds to 1/2000 of a second, with flash synchronisation at 1/125 of a second. The hotshoe features an additional shoe contact for dedicated Pentax flash units, not seen on the preceding ME. In the event of battery failure, the camera can continue to operate at a shutter speed of 1/125 of a second. This feature was lost in later, more fully automatic models such as

1485-488: The different flange distance. Pentax made adapters for its medium-format lenses to use on the K-mount, both the 645 and 6×7, and for the Hasselblad Bayonet type. Also there is a Pentacon-Six (Kiev88 CM) adapter still in production and a shift adapter to use Pentacon lenses as shift lens. Mounts used for Telescopes, microscopes and generic optics. The T-mount was initially developed by Tamron (1957) to allow

1530-643: The easy adaption of generic 35 mm SLR optics into multiple mounts. The T-mount is a 42 mm diameter 0.75 mm pitch screw mount with a 55 mm flange focal distance . Later versions (T2, T4, TX) were more advanced and complex. Several other manufacturers besides Tamron have used these mounts. Because the T-mount is still used for many telescopes and microscopes, they are still available new. Note that while both T-mount and M42-mount are 42mm screw mount systems, and will mount if they are forced, they are not compatible. The difference in pitch can cause damage to

1575-414: The external winder ME (1.5 i/s) or the later Winder ME II (2i/s) and can also mount a Dial Data ME databack, or the later Digital Data M databack via a cord adapter. As with some other M series cameras, there is a window next to the winder arm which indicates film movement, and assists the user in rewinding film into the cassette without losing the tip of the film. The lenses are interchangeable with

1620-444: The focus of the lens. This makes the lenses less bulky than the earlier K F -mount, which had both a motor and batteries inside the lens. It also adds a seventh electrical contact, this one carrying digital information from the lens to the camera. It carries the following information: focal length, distance to the subject, exact absolute f-stop value, and lens size. This information is used to make better exposure decisions, along with

1665-561: The focusing screen. A Pentax ME Super is used by Jonathan Byers in the third season of Stranger Things . Mount:       K       |      KF      |      KA      |     KA2     |     KAF     |    KAF2    |  " Crippled "  |   Autofocus   Pentax K mount The Pentax K-mount , sometimes referred to as

1710-463: The later ME II (2i/s). The Pentax ME could also mount a Dial Data ME databack, or the later Digital Data M databack via a cord adapter. The lenses were interchangeable with the K bayonet mount. Together with the ME and MX was introduced the SMC Pentax-M series of compact lenses. The Pentax ME existed in chrome or black finish, and a limited edition called ME SE had a brown leather covering with

1755-399: The lens mount and at least one Zeiss lens design for its own use. The original K-mount is a simple bayonet connection with three tabs. It was introduced with the K series of cameras. The lens is locked into the camera with an approx. 70° clockwise turn (when looking at the front of the camera). The only linkage with the camera is mechanical and involves the aperture . A slot between two of

1800-578: The lens, adapter or camera mount if they are confused. These are adaptors designed by Tamron to allow the transfer of aperture setting from lens to camera or vice verse, including the Adapt-A-matic (1969), Adaptall (1973) and Adaptall-2 (1979). When Pentax introduced the KA-mount in 1983 Tamron upgraded their Adaptall-2 K-mount into an Adaptall-2 KA-mount. For more details see the Tamron article or

1845-508: The multi-segmented metering that was introduced in cameras using the K AF -mount. The MZ-30/ZX-30, MZ-50/ZX-50, MZ-60/ZX-60, the *ist series and the K100D/K110D lack the mechanical stop-down coupler/indicator. In these cameras – in aperture priority mode – the aperture is set by a dial on the camera body, and no longer on the lens. Pre-A lenses can only be used in manual stop down metering mode and manual flash mode. The K AF2 -mount

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1890-429: The same flange focal distance (also called registration distance or register) as the M42 screw-mount, so that M42 lenses focus correctly using the correct adapter (such as Pentax original or Bower). There are however other third-party adapters that add to the flange focal distance so that one loses the ability to focus to infinity. The loss of infinity-focus may not be significant in macro or close-up photography. There

1935-422: The “green button” on the camera before taking a shot. This variation of the mount is commonly referred to as the “crippled“ K-mount. The R-K-mount is a variation on the original K-mount by Ricoh . It supports Ricoh's own implementation of shutter priority and auto exposure modes, similar to the K A -mount but much simpler. The only addition to the original K-mount is a small pin, commonly dubbed Ricoh pin , at

1980-452: Was Pentax's first attempt at an autofocus system. This autofocus system used sensors in the camera body and a motor in the lens. The two were connected via five new electrical contacts on the bayonet mount itself. One permitted the lens to turn on the camera's metering and focus sensors, two focused the lens (towards and away from infinity) and two appear to have been unused and may have been reserved for future functionality. The K F -mount

2025-692: Was largely a failure. Only one camera and one lens ever used this mount, the Pentax ME F and SMC Pentax-AF 35-70/2.8 . The lens was somewhat large and cumbersome since it had to enclose both the focusing motor (with gears) and batteries to power it. K F and the ME-F are similar in many ways to the system used by Canon in the ill-fated Canon T80 , introduced several years later. The ME F can use all Pentax K-mount lenses which feature an aperture ring. The 35–70 mm lens can be used on all other Pentax K-mount bodies in manual focus mode, but it must be used stopped down on "crippled" K AF bodies. The K A -mount

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