A request to add an option to align_image_stack

I am into super-macro, with 100 or more shots aligned and stacked together. Because of the extremely narrow depth of field, the align_image_stack optimization algorithm usually produces a sever artifact: shots are rotated by a large and variable amount, when there should be no rotation. (I am using a DIY automated macro rail, so there is practically zero rotation, and only a bit of movement in the x and y directions.) As is, align_image_stack is not usable for me. But it looks like a very simple modification could help people in my situation.

Could you please consider adding an extra command line option for align_image_stack which would disable the roll ("r") optimization? Something like "--no-roll". Looking at the source code, it looks like all you have to do is to skip the line

00695 vars.insert("r");

(http://hugin.sourceforge.net/docs/html/align__image__stack_8cpp-source.html).

Thanks!