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

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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.

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 November 18, 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.

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

Among the olive trees 2

by RobertoTR
71 comments, 4197 views

HI RES 6.0 MP

The dark side of the mind

by Fabrix
49 comments, 7267 views

HI RES 7.8 MP

Cyclamen

by RobertoTR
64 comments, 2036 views

HI RES 10.7 MP

Autumn visions

by RobertoTR
50 comments, 1913 views

HI RES 6.0 MP

Schizophyllum commune

by RobertoTR
46 comments, 1674 views

HI RES 6.8 MP

Christmas daffodils

by RobertoTR
58 comments, 1961 views

HI RES 6.1 MP

Ipomea

by RobertoTR
53 comments, 1920 views

HI RES 8.2 MP

Difficult decisions

by RobertoTR
38 comments, 1749 views

HI RES 6.2 MP

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Slipper of Venus

by RobertoTR
46 comments, 1299 views

HI RES 6.4 MP

In the red

by RobertoTR
45 comments, 1820 views

HI RES 7.5 MP

Simply

by RobertoTR
51 comments, 1876 views

HI RES 5.9 MP

Coronary Anemone

by RobertoTR
35 comments, 1292 views

HI RES 6.1 MP

Melitaea

by RobertoTR
33 comments, 1397 views

HI RES 6.9 MP

In the Dark

by RobertoTR
29 comments, 1863 views

HI RES 10.3 MP

Violetta 2

by RobertoTR
44 comments, 2021 views

HI RES 11.4 MP

Elegance in yellow

by RobertoTR
38 comments, 1354 views

HI RES 6.1 MP

Simple composition

by RobertoTR
45 comments, 1649 views

HI RES 6.1 MP

Gladiol in backlight

by RobertoTR
43 comments, 1277 views

HI RES 6.2 MP

Borage

by RobertoTR
35 comments, 1640 views

HI RES 7.0 MP

Anemone

by RobertoTR
48 comments, 1788 views

HI RES 13.1 MP

I'm a little tired

by RobertoTR
37 comments, 1489 views

HI RES 5.9 MP

Martagone

by RobertoTR
40 comments, 1265 views

HI RES 6.2 MP

Slipper of Venus

by RobertoTR
37 comments, 1886 views

It's going to bring luck?.....

by RobertoTR
43 comments, 1203 views

HI RES 10.5 MP

Shot in the heart

by RobertoTR
46 comments, 1677 views

HI RES 6.3 MP

Columbine

by RobertoTR
36 comments, 1104 views

HI RES 10.7 MP

Diving in the undergrowth

by RobertoTR
33 comments, 1075 views

HI RES 8.0 MP

Trasimeno

by RobertoTR
34 comments, 1567 views

HI RES 5.9 MP

My Macau

by RobertoTR
41 comments, 1357 views

HI RES 15.4 MP

Zerynthia cassandra

by RobertoTR
24 comments, 852 views

HI RES 14.5 MP

Albino Italic Orchis

by RobertoTR
30 comments, 852 views

HI RES 10.7 MP

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Watch out for the wolf

by RobertoTR
28 comments, 1297 views

Natural wormhole

by RobertoTR
33 comments, 1047 views

HI RES 6.2 MP

Serapias language

by RobertoTR
32 comments, 1014 views

HI RES 8.5 MP

At the window

by RobertoTR
33 comments, 1298 views

HI RES 6.3 MP

Pratoline, 19

by RobertoTR
40 comments, 1099 views

HI RES 6.0 MP

Small creatures among the mosses

by RobertoTR
21 comments, 609 views

HI RES 6.4 MP

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Reviews » Lenses » Lenses Pentax » Pentax M SMC 100mm f/4 Macro

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

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Reviews

What do you think about this lens?

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