HDR.. how to change exposures

[Rachie_77]

I've been lurking this forum for quite a while now and I must say I LOVE all the HDRs. From what I've read I know it's best to take at least 3 different photos with diff. steps and then combine them with photomatix. I'm curious though how to change the exposures from one image in order to make a HDR.

I downloaded the trial version of photomatix and have taken 3 pictures with different exposures so I kinda know what I'm doing but I have some older pictures that I'd like to mess around with.

Any help would be appreciated!
Thanks!

 

[Sideburns]

Usually you want to do it with fresh pictures as you can take all 3 exposures as new shots. making them from old pictures isn't the best way to do it...

Do you have lightroom? It will let you adjust exposure with a simple slider...you could jsut make copies of the originals and adjust it so you have 3 different exposures...but I doubt it will look that good/different

 

[Sw1tchFX]

you can use any RAW conversion software to change your 'exposure'. Lightroom, Bibble, Aperture, Adobe CameraRAW, whatever reads your camera's raw files.

 

[The_Traveler]

Start with normal exposures and then bracket on either side of that by 3 or 4 stops using shutter speed adjustments (not aperture adjustments which would change your DOF).

Do a search for HDR101 on the web.

 

[Rachie_77]

Thanks alot for your replys! I had been googling all morning and just couldn't seem to find anything.