Long time reader, first time poster. Wanted to ask for a general consensus regarding the metering of the 5D MIII.
After two weeks of use, I noticed all my photo's were looking underexposed by around a stop. Mainly interior work, evaluative metering.
This is where i've sun a series of tests to establish what was up. Removed ALO and HTP, set the picture style to neutral (good representative jpeg preview for the camera histogram) Set up an 18% grey card in even lighting, filled the frame and spot metered off it. Indeed, it came out as I expected.
The histogram spike was 1 stop to 2/3 stop too far to the left (underexposed). I repeated this test a few times with the eye piece covered, top LCD covered (even though its not a light leak effected model, thought ild be safe). Reset camera settings, did a hard reset (removed the clock battery, battery and card), then finally reinstalled the latest firmware. No change.
A search online seems to show that a fair few people experience this same thing. A theory that is posted regularly is that Canon do this intentionally to preserve the highlights. Note: in the same shooting conditions my 7D experiences no such behaviour (histogram spike is perfectly centred).
I realise I could simply dial in a +EV but its proving a tad annoying, especially when using TTL flash and I can kiss goodbye to auto ISO in manual mode. So, the question is: does anyone with this camera experience this at all?