Why does this happen when i HDR?

what are you asking about? the watermark? the color? we need some more meat on your question.

If you mean the pink and blue bits, you will get that in areas that are too dark for the program to cope with. It seems to happen in areas that are far too underexposed in areas that the program wants to lighten.

I'm sure that someone will be along soon with a more technical explanation!

Mike

hmmm Okay thanks. Yea I'm wondering about the weird colors

anyone else have any ideas?

Never had it occur in CS3.

Blender7 wrote in post #5368589
anyone else have any ideas?

Maybe show us the original shots you fed into Photomatix. Software isn't perfect in interpreting things. HDR works if your original shots encompass a wide dynamic range and if the software does a good job of interpreting it all.

I haven't used Photomatix, but I know that some of my HDR attempts in Photoshop were not satisfactory -- back to the drawing board!

When that happened to me in Photomatix it was when I was cheating with a single exposure, rather than bracketed shots, so maybe Blender is using the same method!

Mike

I use the same method as mike-dt6 half the time since I haven't experiment much with bracketed shots. My limited knowledge of and experience with HDR I have noticed that with low resolution and pictures that have blown out areas tend to lead to some pixels. I've only ran into some colored pixels recently which I remedied with a B&W filter.

I don't know what it was but when I was using PS to merge to hdr I would save as a high quality tiff. Then I would import it into photomatix and tone map. It would come out all funky as soon as I imported the original tiff into photomatix.
So I tried merging hdr using photomatix and that worked a lot better.

Looks like an un tonemapped picture to me!

Blender7 wrote in post #5364121
I dont understand.. What did I do wrong?
Why are there weird colors?

Blender7 wrote in post #5368589
anyone else have any ideas?

It's a result that comes from you not capturing the entire range of light present in that area. Photomaix tried to compensate by blowing out pixels. It interpolates the data you give it the best it can. You need to capture more of the near-absolute darks when you take the picture.

I know I explained this poorly, so if you have questions just ask =P

This can be remedied by taking exposures that are more heavily bracketed / EV compensated to account for the significant amount of darkness you're shooting. The only way you'll get a good one-RAW-HDR photo is if you're shooting something that's already amazingly lit... and has no major contrast.