Photomatix question

[fenno]

hi

i've been trying out photomatix, having been inspired by the HDR thread, and am having some success, but i am very puzzled by one thing:

photomatix is saving my tonemapped images at the specified 16 bits, but at 72 dpi, when i am starting with 300 dpi, 16 bit tiffs. is there any reason for this? has anyone else had this problem / does anyone have a solution? i can't seem to find any place to specify the dpi at which i would like my images saved.

thanks

 

[leighonigar]

Why does it matter? That's an output resolution so it's not changing the quality of the files.

 

[pdxflint]

Don't worry about it too much... dpi is for printing. As long as your image size in actual pixel height x width remains the same as the original, you're fine.

 

[qveda]

I don't think CS4 can stitch just 2 images into HDR image. - at least it seems to prefer 3 or more. I was wondering if Photomatix could take just 2 images, that are say, +1-1/3 stops apart and make a HDR image.

Or, must you start with 3 or more , and what is the minimum stops apart for a "good" result ?

 

[FX120]

I don't think CS4 can stitch just 2 images into HDR image. - at least it seems to prefer 3 or more. I was wondering if Photomatix could take just 2 images, that are say, +1-1/3 stops apart and make a HDR image.

Or, must you start with 3 or more , and what is the minimum stops apart for a "good" result ?

It depends on what you're looking for.

If you've got an image that doesn't suffer from lost shadow detail, only blown highlights, you could use only a second image say 1 stop underexposed to restore that highlight detail, and end up with a good looking image that you would never suspect of being tone mapped.

If you're looking to use HDR tone mapping as a weird "other world" type of effect, you might need to use a broader range of exposures.

 

[qveda]

It depends on what you're looking for.

If you've got an image that doesn't suffer from lost shadow detail, only blown highlights, you could use only a second image say 1 stop underexposed to restore that highlight detail, and end up with a good looking image that you would never suspect of being tone mapped.

If you're looking to use HDR tone mapping as a weird "other world" type of effect, you might need to use a broader range of exposures.

hmmm... I tried just what you suggested, and the resulting image in CS4 was terrible. looked way too overexposed . I may not be up the learning curve yet, but I was dissappointed at how bad it looked. I'll try again with some with a new set of images. I want to try just 2 to find out if it will work. I'll also try with 3 images.

Has anyone else had success with just two images ? Will Photomatix work with just two ?