I've searched and searched, and seen much talk of defishing with this or that software most of which I've downloaded and played with, but failed to be satisfied with my results. I love the look and FOV of my 10-17 FE but I'd like to play around with de-fishing sometime. I've attached an example a bunch of stuff (-C parameters to dcraw, parameters described above, paths to dcraw.exe and nona.exe) would have to be changed for your situation Then I go into photoshop or GIMP to tweak the levels and make the JPEG. I found it more useful to use a batch file that calls dcraw to do the RAW->TIFF conversion, and then calls nona (the hugin remapper) directly to generate a de-fished TIFF image.
Specify the HFOV and lens type (fisheye) of the lens,Ĭlick on "calculate optimal image size" you might want to reduce this Hugin (I'm not sure about PTLens) also allows you to specify the pitch (up or down) of the input image this is lets you do de-fishing and perspective correction in a single pass. The horizontal and field of view of the output image (choose anything less than the HFOV of the input in the image above it's about 120 degrees)
The projection type of the output image (rectilinear) The horizontal field of view of the input image For a sigma 8mm this is 185 degrees for a pentax 10-17 I'd expect this to be about 140 degrees at 10mm and about 82 degrees at 17mm ( click here for larger versions of this image) Here's a de-fished image (the source image is at the head of the fisheye fever thread) Uses the same lens distortion model, this might be applicable to your problem (or you could just use hugin ) Thanks.Well, I don't have the 10-17FE, and I don't use PTLens, but since the package I do use So if you've succeeded in de-fishing your shots from this lens, would you mind sharing your secrets with me? (or at least pointing me toward a tutorial out there somewhere.) It seems that the most recommended program would be PTLens, and other programs which use the PTLens database, and it seems to me that the PTLens database doesn't include the Pentax DA 10-17 FE, which is the lens in question for me.
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