PDA

View Full Version : Rebel XT - underexpose???

SAZABI
27th of June 2005 (Mon), 12:09
I am using 70-200 f2.8, and i think my pics are usually screwed on exposure...
anyone experience the same?
updated firmware, but not helping much....
tim
27th of June 2005 (Mon), 16:39
Post a sample picture, with full exif embedded in the photo, we can take a look.
SAZABI
27th of June 2005 (Mon), 17:31
hee... i don't know how to do that, but here is a resized sample, which i posted in the transportation section. I would say at least 20% of my pics (rough estimate) were came out underexposed.....

http://www3.telus.net/pochacho/SP/IMG_6368.jpg
tim
27th of June 2005 (Mon), 17:39
It looks a little underexposed, but not much. The reason is most likely that you're shooting a white car, and the camera makes every scene 18% grey. When you shoot a scene with so much white you'll need to adjust your exposure compensation up by 0.5 to 2 stops - just watch your histogram when you take the shot, you'll get the hang of it. There's a book called "Understanding exposure" which would probably help you understand the issue if my explaination isn't enough.
SAZABI
27th of June 2005 (Mon), 20:04
yeah! that may be a good reason, b/c it happens usually when I am shooting my car....

histogram, hee... may be i will learn how to use it now. Thank you so much for ur comment :)
tim
27th of June 2005 (Mon), 20:17
Read this (http://www.luminous-landscape.com/tutorials/understanding-series/understanding-histograms.shtml), and maybe this (http://www.photoxels.com/tutorial_histogram.html).
SAZABI
27th of June 2005 (Mon), 20:53
woot!!! thank you so much for ur help!
tim
27th of June 2005 (Mon), 21:02
No problem :)