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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. The average price, when it has been added to the JuzaPhoto database, is 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

What do you think about this lens?

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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, 3962 views

HI RES 6.0 MP

The dark side of the mind

by Fabrix
49 comments, 7073 views

HI RES 7.8 MP

Cyclamen

by RobertoTR
64 comments, 1829 views

HI RES 10.7 MP

Autumn visions

by RobertoTR
50 comments, 1733 views

HI RES 6.0 MP

Schizophyllum commune

by RobertoTR
46 comments, 1480 views

HI RES 6.8 MP

Christmas daffodils

by RobertoTR
58 comments, 1874 views

HI RES 6.1 MP

Ipomea

by RobertoTR
53 comments, 1801 views

HI RES 8.2 MP

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Difficult decisions

by RobertoTR
38 comments, 1603 views

HI RES 6.2 MP

Slipper of Venus

by RobertoTR
46 comments, 1159 views

HI RES 6.4 MP

In the red

by RobertoTR
45 comments, 1618 views

HI RES 7.5 MP

Simply

by RobertoTR
51 comments, 1749 views

HI RES 5.9 MP

Coronary Anemone

by RobertoTR
35 comments, 1199 views

HI RES 6.1 MP

Melitaea

by RobertoTR
33 comments, 1266 views

HI RES 6.9 MP

In the Dark

by RobertoTR
29 comments, 1737 views

HI RES 10.3 MP

Violetta 2

by RobertoTR
44 comments, 1873 views

HI RES 11.4 MP

Elegance in yellow

by RobertoTR
38 comments, 1272 views

HI RES 6.1 MP

Simple composition

by RobertoTR
45 comments, 1524 views

HI RES 6.1 MP

Gladiol in backlight

by RobertoTR
43 comments, 1167 views

HI RES 6.2 MP

Borage

by RobertoTR
35 comments, 1511 views

HI RES 7.0 MP

Anemone

by RobertoTR
48 comments, 1643 views

HI RES 13.1 MP

I'm a little tired

by RobertoTR
37 comments, 1373 views

HI RES 5.9 MP

Martagone

by RobertoTR
40 comments, 1166 views

HI RES 6.2 MP

Slipper of Venus

by RobertoTR
37 comments, 1704 views

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

by RobertoTR
43 comments, 1068 views

HI RES 10.5 MP

Shot in the heart

by RobertoTR
46 comments, 1457 views

HI RES 6.3 MP

Columbine

by RobertoTR
36 comments, 1001 views

HI RES 10.7 MP

Diving in the undergrowth

by RobertoTR
33 comments, 984 views

HI RES 8.0 MP

Trasimeno

by RobertoTR
34 comments, 1467 views

HI RES 5.9 MP

My Macau

by RobertoTR
41 comments, 1190 views

HI RES 15.4 MP

Zerynthia cassandra

by RobertoTR
24 comments, 728 views

HI RES 14.5 MP

Watch out for the wolf

by RobertoTR
28 comments, 1191 views

Natural wormhole

by RobertoTR
33 comments, 963 views

HI RES 6.2 MP

Albino Italic Orchis

by RobertoTR
30 comments, 786 views

HI RES 10.7 MP

Serapias language

by RobertoTR
32 comments, 918 views

HI RES 8.5 MP

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At the window

by RobertoTR
33 comments, 1215 views

HI RES 6.3 MP

Pratoline, 19

by RobertoTR
40 comments, 985 views

HI RES 6.0 MP

Small creatures among the mosses

by RobertoTR
21 comments, 522 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