Merging refocused frames with the D800
I haven't tried this with any Nikon (or any camera actually), but I'm curious if anyone has succeeded with it on a D800.
I am describing taking two very quick images with different focal distances with a fast lens wide open (shallow DoF) and then merging them into a single image using PS layers.
My objective is capturing my twin grandsons in the Halloween costumes at different focal distances using available light (I hate flashes). I know that they will inevitably appear to me at different distances, and I expect the light to be poor. I will probably be using either my 85mm f/1.4 or my 50mm f/1.4, a fast ISO, and will have to recompose for each shot, but am expecting that I can do so quickly enough that PS/CS can find enough similarity to stitch the two images. I'm also assuming that I will have to use AF-C, but if the lighting is too different at the two locations, I may have to stick with AF-S and re-measure (Re-AE/AF lock, rather that just recompose).
Any ideas would be welcome. (I hope this is understandable.)
(And mods, feel free to move this thread - I just wanted the D800 folks - specifically - to see it too.)
--- edit ---
It just dawned on me that this is no different than focus stacking (assuming my subjects hold still - THAT will be a miracle), so my question is not at all complex and I am probably wasting your time asking for inputs.
Thanks for reading just the same,
D810, D750, N1-J5, N1-V3 (and a few other cameras) and a BIG handful of lenses.
#1. "RE: Merging refocused frames with the D800" | In response to Reply # 0ecarlino Registered since 09th Dec 2007Thu 24-Oct-13 01:05 PM
Or, an external program:
#2. "RE: Merging refocused frames with the D800" | In response to Reply # 0Antero52 Nikonian since 07th Jul 2009Fri 25-Oct-13 05:30 AM | edited Fri 25-Oct-13 05:33 AM by Antero52
> “this is no different than focus stacking (assuming my subjects hold still - THAT will be a miracle)”
In almost every case where I’ve tried, fully automatic focus stacking fails to give satisfactory results. I don’t do interiors, and outdoors there’s almost always some ghosting. If, say, a reed moves in the photo that’s supposed to be in better focus, the algorithm may take parts of the reed from another photo with inferior focus distance but less subject movement. You end up having two versions of the reed. With outdoor shots I usually get better results by manual layer masking.
Not that Photoshop’s Auto-Blend Layers / Focus stack is totally useless. In places where subject movement is not an issue the results are very good, and the ghosted parts can be restored by manual layer masking, cloning, content-aware fill (either as part of the Fill command or as a mode of the Spot healing brush), or or whatever.
#3. "RE: Merging refocused frames with the D800" | In response to Reply # 0ericbowles Nikonian since 25th Nov 2005Sat 26-Oct-13 09:13 AM
Try a slightly different approach. Try combining the images manually as layers, and then paint the in focus area of the second image into the out of focus area of the first image.
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