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Forum: Pentax Full Frame
03-02-2016, 09:25 AM
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With an APS-C diffraction limits the resolution to just under 16MP at F/8 so you really would not be able to test a 24MP APS-C sensor at F/8 or F/11. You need to keep it at F/5.6 to take full advantage of the sensor.
This is why people say APS-C lenses need to be sharper at lower apertures compared to lenses for larger formats.
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Forum: Pentax Full Frame
03-02-2016, 09:02 AM
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Forum: Pentax Full Frame
03-02-2016, 08:36 AM
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He is looking to test the pixel shift, so he is looking for absolute resolution and contrast. The 31mm has great character, color and Bokeh which he is not testing for. For his purposes the 31mm is not the best choice.
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Forum: Pentax Full Frame
03-02-2016, 07:19 AM
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He ordered the K-3II to test the pixel shift while he waits on the K-1 and the 31mm, but ended up testing the K-3 with the Sigma 35mm because the 31mm "Pentax 31/1.8 did not cut the mustard, so I used the Sigma 35/1.4".
He is a pretty detail oriented guy.
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Forum: Pentax Full Frame
03-01-2016, 10:09 PM
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Forum: Pentax Full Frame
02-29-2016, 04:24 PM
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Exactly. It is simply a way a eliminating the color and detail loss/artifacts generated by the Bayer filter. This basically gives you the resolution of a Foveon sensor without all of the color/ISO issues that Foveon has.
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