[HDR-photo] jpeg exposure adjustment

Roger Howard rogerhoward at rogerroger.org
Thu Feb 15 11:50:27 EST 2007


On Wed, February 14, 2007 8:50 pm, Otto Feiler wrote:
> Is there a photo editor that will allow an adjustment in exposure for
> jpeg's? For example; in Raw Shooter Essentials I can adjust the exposure
> by
> +1, +2, -1, -2, etc. and save the changes to use in Photomatix for HDR
> conversion. I don't always shoot in RAW, or shoot a bracket series, and
> would like to be able to "create" those exposure differences from a single
> jpeg.

As others no doubt have pointed out, creating these false exposures
probably won't buy you anything - you should just skip the interim steps
and bring the image into Photomatix directly.

That said, why not use Photoshop? I'm confused what you think might be
gained here - do you just like the look of the PM tonemapper? PM,
Photoshop, etc, can't manufacture new dyanmic range from an image, it can
only optimize what's been captured.

As for performing exposure adjustments to a JPEG, Lightroom and Adobe
Camera RAW 4 (part of CS3) will both allow bringing JPEG or TIFF into
their raw modules and allow use of the same adjustment tools you would use
on your raw images. Again, they can't perform any magic - the main benefit
of this capability is just being able to use more photographer-friendly
adjustments than you'll find in Photoshop proper.

-Rh




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