Manual differences

[dkfish]

I have been noticing that whenever I shoot a set of images to stitch together, at least one of the images is different than the rest.
eg1: I shot a five shot set of one of the lakes in my area. I'm using a Canon T1i with the 18-55 lens that came with it for this set. The camera is set to manual exposure, 1/125 sec, f13, IOS 400 for each shot. The third shot in the set, when stitched together, showed a heavy green tint that none of the others had.
eg2: I shot a five shot set at the New River Gorge that spanned from the bridge to the gap in the mountains. The third shot was slightly darker than the others. Here I used my T1i with the 55-250 lens, camera set to manual exposure 1/60 sec, f13, IOS 400.
I this a problem with my technique or a fault in the camera itself? I have seen some variation of these affects in almost every mulit-shot set I've done.

[inkista]

My pano mantra is Manual Manual Manual.

1). Manual exposure.
2). Manual focus.
3). Manual white balance (i.e., NOT AWB).

1) you already have. What may be making an image lighter or darker could be something as simple as a cloud going across the sun. Or the sun going down. Lighting conditions change. Shoot fast, and maybe adjust by hand in post to match.

2) you want to manually focus to avoid focal length or DoF shifting.

3) this is probably the greenish tinge thing. AWB uses the color values in the frame to set the white balance. AWB will continually shift this, depending on what's in the frame. Setting to one of the non-auto white balance settings (sunny, shade, whatever) will use a consistent white balance setting for all the member images. OR you could shoot in RAW, and make sure that you sync up the white balance setting between the images in post.

[dkfish]

Thanks for that. I had everything covered except the AWB. I do shoot in RAW but when I do a set like this I just do a direct convert with no adjustments until after the stitch. I do this to avoid the inherent differences installed through manipulation. Thanks for the advice!

[hpotter101]

probably the white balance change,

set white balance to manual also

[OsmosisStudios]

Originally Posted by dkfish

Thanks for that. I had everything covered except the AWB. I do shoot in RAW but when I do a set like this I just do a direct convert with no adjustments until after the stitch. I do this to avoid the inherent differences installed through manipulation. Thanks for the advice!

You'll really have to sit there and at least batch together the basics like white balance and exposure, get everything on the same page, then save.

[ishootRAW]

Are you taking panoramas? If so try hugin. It will automatically correct exposure errors.