Rumors > EOS Bodies
The Light Leak Issue
msdarkroom:
Perhaps the reason that this shows up with the cap on is because the sensor is actually really really sensitive, more so than on older models, and that is why it seems to show up on the high end gear only.
IE: The same minor leaks as on all gear, but now the sensor can see it.
Boom.
april:
i believe this movement in exposure with the lenscap on is not triggered by a light leak. its the same as when pressing the shutter button in total darkness wherein the camera is trying to meter the available light for it to set the exposure, with the lens on this shall go with the hunting of the lens for focus. in this situation the camera metering is fooled and couldn't lock the focus and exposure therefor the shutter will not trigger unless you overide the cameras' computer by going to manual mode.
justsomedude:
--- Quote from: neuroanatomist on April 08, 2012, 10:52:02 AM ---
--- Quote from: Canon Rumors on April 08, 2012, 10:39:40 AM ---... it just doesn’t appear there is an issue to me.
--- End quote ---
Wrong. It's a HUGE issue for anyone who's favorite photographic subject is the inside of a lens cap!!!
--- End quote ---
All sarcasm aside... does anyone not see how this could be a serious issue for astrophotographers?
If you are using a headlamp or the LCD backlight to set your exposure for a night sky capture, you could be in serious trouble. I'll be doing some tests tonight and will follow-up tomorrow.
I fear the 5D3 may not be suited for astrophotography at all if this problem affects nighttime exposures.
TrumpetPower!:
--- Quote from: msdarkroom on April 08, 2012, 11:27:22 AM ---Perhaps the reason that this shows up with the cap on is because the sensor is actually really really sensitive, more so than on older models, and that is why it seems to show up on the high end gear only.
IE: The same minor leaks as on all gear, but now the sensor can see it.
Boom.
--- End quote ---
Actually, if anybody here is handy with math, it might be possible to do a calculation to see if that reasonable-sounding theory holds up.
What is the actual increase in illumination indicated by the change in meter readings, and how does that compare with the actual light levels at the (new) bottom of the 5DIII's sensitivity? If there's any overlap...
...though that still would only be of idle curiosity to the non-lenscap non-black-cat-in-coal-mine crowd....
b&
javier:
Hi,
I test it and yes that happes to mine too but............
here is my real problem:
If I take a picture for example: Manual 4.0 / 1/200 / iso 800 & I compare the same but in P mode the manual picture is a bit darker like 2/3 also you can notice that if you check the histogram.
since I start to take picture with my 5d mark iii I notice the picture was a bit dark like 2/3 so if I want to take the picture right I have to set my meter to +2/3
anyone with this problem?
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