I'm stitching together a 182 image panorama (no exposure levelling
necessary), and I'm having a curious problem with nona.  I'll put my
troubleshooting steps below so you can follow along.

1.  I ran a standard enblend stitch process, and nona blew the exposure of
the first image out until it's nearly all white pixels.  Every other image
has the proper exposure.

2. I used a blended panorama with enfuse, which gives me the proper exposure
on at least the first few images (I quit the process at this point).  I
noted in the console that nona adds the -e 14.3219 parameter to level the
exposure for this process, but since enfuse is running, it would take a lot
longer to process.

3. I hacked nona to always specify the -e parameter, and ran my original
scenario without enfuse, and the first image is properly exposed.  However,
the second, third, and presumably the rest of the images are now nearly all
black.

4. I un-hacked nona, recompiled, but I saved the in-process files from the
last batch.  I ran my original, non-enfused stitch, and replaced the
overexposed first image with the properly exposed first image from the
hacked nona partial stitch.  I'm waiting for the results, which will
probably take another 12 hours.

I've searched the wiki and the list, but I can't seem to figure out what on
earth nona is doing to my first image.  Can anyone enlighten me?  I'm
running 0.8.0.3867, straight from svn.

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