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Forum: Pentax Q
08-21-2013, 04:28 PM
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And now for something completely different...
Soviet MC MTO-11CA 10/1000mm M42 mirror lens mounted to Pentax Q through K-Q and K-M42 adapters.
This is the Maksutov-Cassegrain mirror lens with 1000mm focal length so on Pentax Q it gives about 5500m equivalent.
Photographs:
1: Full scene taken with lens (to obtain this size of the object on the photo the photo was taken from about 8-10m distance).
2. Crop of the center part of the photograph (1:1). The aperture in the lens is constant so I show only one exemplary photograph.
3. Pentax Q with mounted lens (or maybe the lens with mounted Pentax Q :) ).
The focus point was set to centre stick of Bell Sioux cockpit (or I have tried to set it - for this focal length it is challenge).
Photographs were developed in LR. Due to high sesitivity the some denoise and sharpening was used.
As you can see the lens unfortunately gives ugly IQ on Pentax Q. The IQ on the APSC Pentax was also not too good (but much better).
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Forum: Pentax Q
07-31-2013, 03:39 PM
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This time the SMC Pentax-M 1:3.5 28mm lens.
Lens was mounted to Pentax Q through K-Q converter.
Photos:
1: Full scene taken with this lens.
2-7: Crops of the center part of photographs (1:1) for apertures: 3.5, 5.6, 8, 11, 16, 22.
The focus point was set to centre stick of Bell H-13 cockpit.
Photographs were developed in LR with default settings with one exception. Exposure value of photo for 22 aperture value were incerased in LR because of underexposure due to limited exposure time (2 seconds).
In my opinion this lens gives very good IQ with the Q in wide range aperture values.
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Forum: Pentax Q
07-28-2013, 02:00 AM
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Next tests...
Below photographs from Pentacon 2.8/29mm m42 lens. This is lens especially for Praktica M42 film cameras from East Germany.
Lens was mounted to Pentax Q through M42-K converter and K-Q converter.
Photos:
1: Full scene taken with this lens.
2-8: Crops of the center part of photos (1:1) for apertures: 2.8, 4, 5.6, 8, 11, 16, 22.
The focus point was set to centre stick of Bell H-13 cockpit.
Photos were developed in LR with default settings with one exception. Exposure value of photos for 16 and 22 aperture value were incerased in LR because of underexposure due to limited exposure time (2 seconds).
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Forum: Pentax Q
07-27-2013, 01:30 AM
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Hello snostorm and thank you for your answer.
In Poland here are some Pentax users but most popular brands are Nikon, Canon, Sony.
We have Polish Pentax forum (www.pentax.org.pl) but activity in Pentax Q section is very low.
In future I will post more tests with other lenses.
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Forum: Pentax Q
07-26-2013, 01:41 PM
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Hello,
It is the first my post on PentaxForums but I am reading the forum for some time.
So greetings from Poland for everybody!
Below there are photos taken with Pentacon 1.8/50mm m42 lens. It was the most popular standard lens for Praktica M42 film cameras from East Germany.
Lens was mounted to Pentax Q through M42-K converter and K-Q converter (non Pentax genuine converter).
Photos:
1: Full scene taken with this lens.
2-8: Crops of the center part of photos (1:1) for apertures: 1.8, 2.8, 4, 5.6, 8, 11, 16.
The focus point was set to centre stick of Bell H-13 cockpit.
Photos were developed in LR with default settings.
I think that the best result is for 4 aperture value.
:)
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