CS3 Photomerge - exposure issue

undies

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I decided to play with the new Photomerge feature in Photoshop CS3. This tool automates the process of creating panoramic shots. I manually set the aperture and shutter on my Canonet QL17 GIII, and then panned across a scene snapping six photos from a fixed vantage point. I fed the results into Photomerge and got this (after cropping):

20071014_panS.jpg



Click here for a slightly larger version.

Overall it worked pretty well, but you can clearly see dark areas where each image was merged. Is there anything I could do with the camera to reduce this problem (such as a different aperture), or some special P-shop magic that can fix it?
 
Shoot your multiple exposures vertically - the exposure difference and any distortion from the lens will be minimized.

You can also do a manual photo merge, with layer masks which will allow you to use localized exposure correction on the "seams" when in photoshop.
 
I've only used it once, but I don't see very obvious exposure differences, even though I shot in aperture priority mode. I think photomerge does some exposure equalization. Could it be lens vignetting? Maybe try shooting with more overlap between images so that the program has more to work with?

My sample:

1526661240_a46a64ea44_b.jpg


Larger (2000 pixels wide): http://farm3.static.flickr.com/2200/1526661240_ce4bb6922d_o.jpg
 
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