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03-11-2019, 04:42 AM - 8 Likes   #961
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Test of the Pentax red channel with DFA28-105 at its closest focusing distance.
Subject of experiment: fresh strawberries, before eating them



03-13-2019, 02:41 AM - 1 Like   #962
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They look almost 3D, and very juicy!
03-14-2019, 01:57 PM   #963
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QuoteOriginally posted by Rondec Quote
Speedwell? (100 macro WR/pixel shift)
Definitely! Nice spring shots.
03-15-2019, 07:03 AM   #964
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Field at Sunset (DA *55/pixel shift)



6 Days Ago   #965
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After Sunset (FA 31 limited/pixel shift)

4 Days Ago   #966
Sorry for all this
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QuoteOriginally posted by northcoastgreg Quote
From Berry Summit, shot with the FA-J 75-300:
Just curious....why use pixel shift for this shot?
4 Days Ago   #967
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QuoteOriginally posted by CharLac Quote
Just curious....why use pixel shift for this shot?
Probably more experimental than anything else. I had found that pixel shift could help with telephoto landscape shots when using the DA 55-300 PLM on the KP. I wanted to see to what extent I could duplicate that using the admittedly inferior FA-J 75-300 on the K-1.
4 Days Ago - 1 Like   #968
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In my experience you will not get any more details in this kind of scene, but you will get a lower noise level, unless movement cancels out the pixelshift effect. On the other hand, a light touch of noise reduction might get you the same result.

4 Days Ago   #969
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QuoteOriginally posted by Gimbal Quote
On the other hand, a light touch of noise reduction might get you the same result.
Not really (sorry), the foreground is a dark portion of the frame, the clouds are bright, clouds areas that move will be replaced by a single frame, noise is minimized in bright areas anyway. The foreground is fixed, this is were the 4 frames are combined, reducing noise without reducing detail in the shadows. So, it's not like noise reduction will produce the same result.

---------- Post added 19-03-19 at 12:32 ----------

There is a way to benefit from pixel shift even in scene containing moving parts, it is counter intuitive, it is long exposure (such as 5 to 10 sec.). Using a ND filter for extended exposure time makes moving parts of an image blurred while other parts aren't affected. When the 4 pixel shifted frames are assembled, the blurred parts are more clearly defined as non-pixel-shift areas, on any smoothed part it is also easy to remove residual artifacts if any. The fixed parts of the frame are demoisaiced with combining 4 frames benefit from lower noise and eventual higher resolution when not limited by the lens / aperture diffraction. Long exposure is a method that allow using pixel shift again when some parts of the frame are moving.

Last edited by biz-engineer; 4 Days Ago at 04:36 AM.
4 Days Ago - 1 Like   #970
Sorry for all this
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QuoteOriginally posted by biz-engineer Quote
Not really (sorry), the foreground is a dark portion of the frame, the clouds are bright, clouds areas that move will be replaced by a single frame, noise is minimized in bright areas anyway. The foreground is fixed, this is were the 4 frames are combined, reducing noise without reducing detail in the shadows. So, it's not like noise reduction will produce the same result.

---------- Post added 19-03-19 at 12:32 ----------

There is a way to benefit from pixel shift even in scene containing moving parts, it is counter intuitive, it is long exposure (such as 5 to 10 sec.). Using a ND filter for extended exposure time makes moving parts of an image blurred while other parts aren't affected. When the 4 pixel shifted frames are assembled, the blurred parts are more clearly defined as non-pixel-shift areas, on any smoothed part it is also easy to remove residual artifacts if any. The fixed parts of the frame are demoisaiced with combining 4 frames benefit from lower noise and eventual higher resolution when not limited by the lens / aperture diffraction. Long exposure is a method that allow using pixel shift again when some parts of the frame are moving.
You really are an engineer aren't you ;-)
23 Hours Ago - 1 Like   #971
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Crocus (DFA 100 macro WR/pixel shift)

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