Pentax M SMC 100mm f/4 Macro : Specifications and Opinions

Pentax M SMC 100mm f/4 Macro

The Pentax M SMC 100mm f/4 Macro is a macro lens for FF and APS-C, manufactured from 1977 to 1984 (discontinued). The focus is done by Manual Focus, it does not have image stabilization. The average price was 90 €;

7 users have given it an average vote of 8.9 out of 10.

Specifications
Focal lenght	100 mm
Angle of view	24.4°
Format	FF, APS-C
Max. aperture	f/4
Aperture blades	6
Lenses/Groups	5 elements in 3 groups
Min. focus distance	0.45 meters
Reproduction ratio	0.50x
Features
Zoom type	Ring, external
Stabilization	No
Focus	Manual Focus
Internal Focus	No
Built and notes
Tripod ring	No
Extenders	No
Filters	49 mm
Lens hood	Yes (not supplied)
Weather sealing	No
Weight	370 g
Dimensions	65 x 82 mm
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Reviews

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The following opinions have been automatically translated with Google Translate.

Stefano Banda

sent on 18 Novembre 2016

Pros: Good yield, rocky construction, focus (manual) very accurate, no distortion

Cons: Poor sharpness at full aperture, lens hood uncomfortable and economic construction.

Opinion: Another of my "remnants" of the analogue time that still has its say. First of all affects the weight and robust construction, the entire glass and metal. At full aperture is not clear, in fact, to be precise the photos are "evanescent" and with showy halos and aberrations, but already closing of a stop the rendering is very good at f / 11 reaches its top, with a sharpness that can compete with many modern macro. Obviously the focus is manual, but the ring is very smooth and has a very long race (nearly 360 °), which allows extremely precise adjustments. The diaphragms are marked by a "click" reassuring, but lacking the "A" position is not possible to control them from the camera and it necessarily has to act on the ring nut, which may be a limit in some cases. Even the lack of any electronic connection with the camera requires to find the correct exposure for attempts, or based on experience. The only vIt was inconvenience is the hood, which is engaged by pressing two clips but can not be mounted backwards when not in use, so you should store in your pocket or somewhere else when there is the cap. It is also rather plasticky and contrasts with the objective of rocks. However, apart from that, it is still valid perspective.

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Pentax M SMC 100mm f/4 Macro : Specifications and Opinions

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Reviews

What do you think?

Photos taken with Pentax M SMC 100mm f/4 Macro