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Archive 2012 · Help please...Canon T1i overexposure problems
  
 
Monito
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p.2 #1 · p.2 #1 · Help please...Canon T1i overexposure problems


melcat wrote:
OP claims it was shot in "P".


The EXIF code in his image for Exposure Mode is '0'. That would be "Full Auto", the box symbol, not P.

P is not Auto ISO.



Aug 21, 2012 at 11:36 AM
BrianO
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p.2 #2 · p.2 #2 · Help please...Canon T1i overexposure problems


melcat wrote:
OP claims it was shot in "P".


Monito wrote:
The EXIF code in his image for Exposure Mode is '0'. That would be "Full Auto", the box symbol, not P.


Not only did the OP state that he was in P, but I checked his photo in DPP and it also lists the mode as "Program AE."

Would DPP say "Program AE" if "Full Auto" were activated?








Aug 21, 2012 at 06:10 PM
BrianO
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p.2 #3 · p.2 #3 · Help please...Canon T1i overexposure problems


Monito wrote:
P is not Auto ISO.


If you mean you can't use Auto ISO in P mode, that's not correct.








Aug 21, 2012 at 06:20 PM
 

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Monito
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p.2 #4 · p.2 #4 · Help please...Canon T1i overexposure problems


OK, thanks. Some Rebel modes work differently from other cameras, I see now.

Re: P vs Full Auto, I'm going by the codes shown by his Picassa link and their meaning as Canon tags:

http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Canon.html

CameraSettings tag 20: CanonExposureMode 0 = Full Auto

Picassa says "Exposure Mode 0".



Aug 21, 2012 at 06:35 PM
gusthecat
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p.2 #5 · p.2 #5 · Help please...Canon T1i overexposure problems


Here is the latest update. I borrowed a friends' T1i and tested it in my backyard with two shots tonight. This helped me confirm that mine is broken. I'm taking it in tomorrow to get it adjusted/repaired. Hopefully they can fix the light meter(?) problem. The only difference in these two shots is my buddy has firmware v1.0.9 and I have v1.1.0. Otherwise, the lens and shooting modes were the same. Evaluative metering, Auto ISO, P mode...kit lens at full wide. The exif details are on the Picasa links again.

My cam took the shot in 1/20sec at f3.5 and ISO250.

My bad shot

His working one took the same shot in 1/50sec at f4.5 and ISO100!

His working shot

Thanks for the advice and tips. I'm glad I'm not totally insane and doing something weird re: operator error.

GusTheCat



Aug 25, 2012 at 01:11 AM
Monito
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p.2 #6 · p.2 #6 · Help please...Canon T1i overexposure problems


Well done, gusthecat. Glad you are getting some resolution. And thanks for the update.

It is amazing how many people come into the forum thinking their lens or camera is bad and then 1) First we have to ask them for the most basic information about which lens, which camera, what settings, etc. that should be obvious to include 2) We suggest simple basic tests to do that they should have thought of themselves.

The OP's testing is the kind of approach and testing that I wish more people did. But then again, many people go through life working hard to prove that science class and the teaching of the scientific method was wasted on them. It's like a badge of honor or 'cool' in many circles to say they have a block on mathematics or science. These are people who would never think it cool for anyone to claim to be illiterate.

Basic testing (like the OP did) is application of the scientific method.



Aug 25, 2012 at 01:36 AM
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