help on metering needed!

[convexlens]

Hi,
need some advice before I send my K20 in for service.

Indoors and when it is darker I usually get correct exposure but in bright sunlight (eg architecture or landscape) shots are 2-3 stops overexposed. Not always, but when it happens it remains so for the entire session.

Couldn't find any connection to spot or green metering, auto ISO, ext DR, AE/AF custom settings yet.

Before I send it in and have no camera for a month or they cannot reproduce this behaviour- did you ever had similar problems? Any suggestion to locate the problem more precisely to have a better description for the service team?

Thanks in advance!

 

[sterretje]

Which program mode? Type of lenses (M42, K/M, A/AF)?

Can you post a sample with exif intact?

--
WimS

 

[convexlens]

forgot to add an example ...

This is a test shot the second time I saw this overexposure beginning of March. Center focus on a mountain in the center of the image - which is completely in the whites now. P-mode, auto exposure, DA40. The bright sky should result in a dark foreground if metering woked as should. During easter holidays everything worked fine also with the DA40 and other lenses and I thought the overexposure was my fault. Then it reappeared again this weekend.

This happens in P-mode without any exposure compensation or shifting exposure settings. Also happens in green mode - but until now I never used this one.

But Thanks a lot! So far you already provided some good inputs ;-) As far as I remember it always happened with the DA40 and I didn't test Av or Tv.

I will test M mode as well to check if it is lens related. Could it be possible that it stays wide open?

Any idea or other suggestion?





Thanks!

 

[Richard Smals]

Test the DA 40 if the aperture is working correctly, try the aperture level on the lens if the blades are moving good in and out.

Looks more like a lens problem then a camera one.

--
Bye4now



http://www.indots.nl

I have the deepest respect for all those people who like me.

 

[convexlens]

Yes, it is the lens. Strange, but it seems to work fine up to f5.6 but then the problem starts. blades are moving but maybe at higher apertures it isn't quick enough anymore. I owe you both a beer, if you come to Vienna by chance ...

 

[Richard Smals]

Yes, it is the lens. Strange, but it seems to work fine up to f5.6 but then the problem starts. blades are moving but maybe at higher apertures it isn't quick enough anymore. I owe you both a beer, if you come to Vienna by chance ...

That's a good offer, thanks.

--
Bye4now



http://www.indots.nl

I have the deepest respect for all those people who like me.

 

[jm_mac]

This happened to me occasionally when I had my K20D and took photos in bright daylight - I found I often had to switch to multi-segment metering in order for the photo to not be overexposed (I surmised that it spot metered on something in the middle of the photo that was darker than overall).