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Forum: Photographic Technique
08-14-2017, 08:37 AM
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Brian's multi-exposure portrait process is a cool variant of the 'superresolution' method described on petapixel.com (search for 'A Practical Guide to Creating Superresolution Photos with Photoshop'), which actually relies on camera movement to simulate the sensor moving in between exposures. I haven't tried it (although have been meaning to), but have tried a similar stacking process where you can simulate the use of a ND filter for longer exposures in bright conditions, say for creating wave blur on a sea or river.
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Forum: Photographic Technique
08-14-2017, 12:30 AM
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I tried hand-holding some pixel shift pictures with the K-3II, and got no improvement over a standard shot, whereas on a tripod with a two-second delay, there is a visible difference. This might be because PS relies on the frames being lined up at pixel level which would be very difficult to achieve hand-held between the separate frames, regardless of how fast the shutter speed is for the individual frames.
For PS, pressing the shutter release blanks out the viewfinder for what seems like an eternity when you have the camera up to your eye, so there's no visual reference to confirm that you haven't moved slightly. Then, if you have moved, with motion correction off the output will be a little blurry, negating the effect of PS; and with motion correction on, the camera will select a reference frame and likely ignore the rest, so you probably end up with a standard non-PS shot.
Don't get me wrong - it would be great to be able to hand-hold PS pictures, but I haven't been able to do it effectively so far. Even with propping my elbows on a bridge parapet, I can't guarantee that I haven't moved just a fraction between the frames.
(BTW, the K-3II doesn't have motion correction control in camera - it's always on - but you can select on or off in DCU5.)
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