Wierd Exposure probs and metering

[jambredz]

something wierd is happening all of a sudden with my cam. When using old manual primes and half pressing the shutter it will tell me that i am very underexposed (3 stops) but to my eye its very well exposed. Now when i adjust the shutter or ISO or iris just to get a proper reading on the meter the image is almost white (totally overexposed) but on the meter its properly exposed. Everything was working well up to eariler today! (this morning).However when i put my Tamron 17-50 lens on (which can communicate with the camera) it meters properly.
I havent gotten to test extensively as this just started to happen and its now nightfall, tomorrow i will test more in the sun. But i wanted to post this asap as i'm in another country now and access to the net isnt so readily available for me.

Anyone know what the heck is going on?

 

[Jordan Scott Price]

Have you set an aperture bias? I don't know if it would behave like this, but I can't think of anything else.

Or is the brightness on the LCD higher than usual?

 

[jambredz]

OK...even wierder news...its gone back to working. I have changed nothing. No idea why that happened yesterday. Its working for now...so i will continue to test and try to find out why this was happening.

auto lighting Optimizing was off...exposure compensation at 0....and lcd brightness auto.

Could it be the auto? I duno but it has never acted like this before

I have a question...

does the type of metering affect this? as in if u hae it on spot as opposed to center weighted ect? Cuz i dont know the difference between them.

 

[PerroneFord]

auto lighting Optimizing was off...exposure compensation at 0....and lcd brightness auto.

Turn this off. Or you'll never have any idea what you're doing by looking at the screen. This won't affect metering, but will affect how the scene "looks".

I have a question...

does the type of metering affect this? as in if u hae it on spot as opposed to center weighted ect? Cuz i dont know the difference between them.

Yes, the metering with a modern lens is matrix by default, and the metering with old glass is likely spot metering. They will give VASTLY different results, particularly in high contrast scenes.

The difference in metering types is clearly laid out in the manual. You should probably read it.

 

[jambredz]

thanks Perrone. what do u usually set your LCD brightness to?

And yeh i def need to read the manual. I been putting it off cuz i dont like reading those long things from the PC screen. I'm going to the US in a 2 weeks, i'll see if i can buy a hard copy. But i'll read the metering part now.

The wierd thing though is that these werent a problem before. then during shooting yesterday it just started to happen and now its back. i dont remember changing any setting.

 

[PerroneFord]

thanks Perrone. what do u usually set your LCD brightness to?

I keep mine at 4. I think this is the recommended setting and it works well for me.

And yeh i def need to read the manual. I been putting it off cuz i dont like reading those long things from the PC screen. I'm going to the US in a 2 weeks, i'll see if i can buy a hard copy. But i'll read the metering part now.

Can't you download it and print it?

The wierd thing though is that these werent a problem before. then during shooting yesterday it just started to happen and now its back. i dont remember changing any setting.

Have you been shooting the same kind of subjects? The spot meter is so tight if you move it a few inches it will read differently. Point it at the floor, a wall, a window, a ceiling, and it will move all over the place.