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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > Photo Booth overexposure

Photo Booth overexposure
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Fresh-Faced Recruit
Join Date: Oct 2007
Location: Burlington, MA
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Oct 10, 2007, 12:12 PM
 
Does anyone else have problems with overexposure on Photo Booth? I have an iMac 24" and we have problems with brightness. Apple says there are no user-adjustments that will turn down the flash, or turn it off. I'm also noticing that without even taking a picture, the lamp behind me is just a big ball of light. I'm wondering if the camera is oversensitive to light, taking in too much. The suggestion from Apple was to bring the iMac in to the store and have them replace the camera. Any thoughts?
     
Addicted to MacNN
Join Date: Mar 2006
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Oct 10, 2007, 01:27 PM
 
Wasn't there an app that let you do this?
iGlasses?
     
Mac Elite
Join Date: Oct 2003
Location: New York City, NY
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Oct 10, 2007, 01:48 PM
 
it's not the best camera so its dynamic range is limited. so if the main subject is dark or the room is dark, it will expose for the darks and the lights will be blown out. unless it really is just completely overexposed. point the camera at only the light and see what happens. it should get darker. if it doesn't, then you have a problem and you should replace it.

but iGlasses does let you change the brightness if you want to go that way.
iamwhor3hay
     
Mac Elite
Join Date: Nov 2006
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Oct 10, 2007, 03:57 PM
 
The main lighting source is the "flash" from the screen.

If you lighten up the subject - with the desk lamp, for example - it'll influence iSight to expose less.
     
Mac Elite
Join Date: Oct 1999
Location: Montréal, Québec (Canada)
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Oct 15, 2007, 04:35 AM
 
Oh! So that's why! I was puzzled because in "live preview" mode, the exposure is good, but as soon as the picture is taken, it becomes severly overexposed. I didn't notice that the screen "flashed" for real, I just tought it was a fun visual effect. That's sad because otherwise it would produce really good pictures, but they are all ruined by this stupid flash.. What are they thinking, we don't all live in dark basement without light..
     
Dedicated MacNNer
Join Date: Oct 2002
Location: Michigan, USA
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Oct 16, 2007, 09:46 PM
 
Actually, the picture is worse if you take it in a dark room. The iSight sees dark, and compensates. Then the screen flashes at capture, and the result is an overexposed shot. It's not implemented right.
     
Mac Elite
Join Date: Oct 1999
Location: Montréal, Québec (Canada)
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Oct 17, 2007, 04:01 AM
 
At least we should be presented with some level of customization... With Apple this is just ridiculous. They want to make things simple, but they should at least put an "Advanced" or "Expert" option somewhere, in Safari, for exemple.
     
   
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