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Canon 5D2/7D meters off with M42 lenses
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PostPosted: Sun Oct 09, 2011 5:00 pm    Post subject: Canon 5D2/7D meters off with M42 lenses Reply with quote

Hi all -

I recently got into running the M42 lenses on my 7D and 5DII. I am using a Super Takumar 1.4/50 and a CZJ Tesser 2.8/50. The meter seems to be very off. Going from wide open to like F2 on the Super Tak will result in a DRASTIC change on the meter.

Any advice? Is this ordinary?


PostPosted: Sun Oct 09, 2011 6:15 pm    Post subject: Reply with quote

problem come from the chip on the adapter
without chip or with last generation programmable chip, no problems


PostPosted: Sun Oct 09, 2011 7:14 pm    Post subject: Reply with quote

poilu wrote:
problem come from the chip on the adapter
without chip or with last generation programmable chip, no problems


My adapters have no chip


PostPosted: Sun Oct 09, 2011 8:13 pm    Post subject: Reply with quote

I have a eg-s matte screen and this probably make the difference


PostPosted: Sun Oct 09, 2011 8:48 pm    Post subject: Reply with quote

poilu wrote:
I have a eg-s matte screen and this probably make the difference


I have that also in my 5DII and selected it in the menu, but I use a 7D which also has strange meter behavior using manual lenses.


PostPosted: Sun Oct 09, 2011 9:05 pm    Post subject: Reply with quote

Could be the metering mode setting...


PostPosted: Mon Oct 10, 2011 6:00 am    Post subject: Reply with quote

In 4 Canon DSLRs and 5 Canon film SLRs, I've not yet experienceed any metering issues, but I do hear folks complaining.

How is the meter with EOS lenses?


PostPosted: Mon Oct 10, 2011 9:09 am    Post subject: Reply with quote

From my experience the Camera only meters correctly at f/2. At any other f-stop it will either overexpose or underexpose. This is a problem with chipped adapters. If there is no chip, there should not be a problem.


PostPosted: Mon Oct 10, 2011 11:10 am    Post subject: Reply with quote

I suffered with issues at smaller apertures on the 5D. I installed an EE-S screen and metering is really good now...although I find I need a small exposure adjustment at f8 and smaller apertures.


PostPosted: Tue Oct 11, 2011 6:12 am    Post subject: Reply with quote

ManualFocus-G wrote:
I suffered with issues at smaller apertures on the 5D. I installed an EE-S screen and metering is really good now...although I find I need a small exposure adjustment at f8 and smaller apertures.
Hmm, I always have the matte screen installed which maybe why I never see this issue.


PostPosted: Tue Nov 08, 2011 9:11 pm    Post subject: Reply with quote

I had also this problem ,mainly when I first used my 20/2.8 Flektogon on my XTi . I solve the problem with a ... sony NEX 3 Laughing I find the screen of the APSC DSLRs too small for comfortable focusing with MFL especially for impaired vision persons (like me).Even with chipped adaptor and viewfinder magnifier X0.32 I have too many missed focuses.