View previous topic :: View next topic |
Author |
Message |
tinyau09
Joined: 11 Nov 2009 Posts: 5
|
Posted: Thu Dec 24, 2009 10:15 pm Post subject: N24-85 metering issue on 50D? |
|
|
I found my 50D + N24-85 gives me a nice metering on 24 end but it becomes over-exposed on 85 end, by +1 to +1 2/3 EV, in Av mode.
Did anyone get similar situation? |
|
Back to top |
|
 |
conurus Site Admin

Joined: 15 Aug 2006 Posts: 795 Location: Vancouver, Canada
|
Posted: Thu Dec 24, 2009 11:04 pm Post subject: |
|
|
Thank you for your problem report.
All exposure problems have one of these two causes:
1, a physical problem due to the aperture diaphragm being malformed, misaligned or mis-calibrated, or
2, an electronic problem due to an inaccurate meter.
I would suggest first narrowing down the problem. Please kindly test against a uniform background (e.g. a wall) in M exposure mode using the same shutter speed and the same aperture value. The exposure should be more-or-less the same regardless of focal length. |
|
Back to top |
|
 |
tinyau09
Joined: 11 Nov 2009 Posts: 5
|
Posted: Sun Dec 27, 2009 4:39 am Post subject: |
|
|
I dont have my 50D now
but I test it with 5D MarkII it works fine
I suspect 50D got some problems... |
|
Back to top |
|
 |
arif
Joined: 18 Sep 2010 Posts: 15
|
Posted: Mon Sep 20, 2010 5:34 pm Post subject: I have a similar problem with my 5d2 |
|
|
I have to underexpose by at least 1 to get a decent exposure
I'm pretty sure its the lens.. my other lenses meter correctly
Bo Ming (Conurus) any help would be appreciated |
|
Back to top |
|
 |
|