Hi, after my 2 week trip to Shanghai and Guilin with extensive uses of the Sigma 17-35mm on the D60 with polarizer filter, the 17-35mm is exhibiting weird METERING problems.
After a few sky shots (AF aimed at something with contrast) when i look through the viewfinder there is like another layer, the layer is a blackish with some black dots (very small). The AF won't focus on anything, even when aimed at buildings, or other things with contrast. The D60 metering is WAY OFF, eg. should be f5.0 1/200, it meters for f5.0 1/50.
i would have to do the followings to get the metering back to normal,
1. change to higher ISO
2. popup flash
3. change from 35mm to 17mm or visversa
4. remove lense, then reattach lense
once the picture is taken (under this slight blackish layer) the viewfinder suddenly turns back to normal without layer and the scene is brightly lit. The picture taken is WAY OVER exposed.
Weird enough, if i put on a 50mm prime, with polarizer filter and aim at the sky/clouds i can taken hundreds of pictures without the blackish layer/bad metering.
i can only think its the 17-35mm being bad, is that possible?
Not sure what other information i can provide here to anyone else who might seen this problem or know anything about this strange problem.
--
Thanks,
Chucks
After a few sky shots (AF aimed at something with contrast) when i look through the viewfinder there is like another layer, the layer is a blackish with some black dots (very small). The AF won't focus on anything, even when aimed at buildings, or other things with contrast. The D60 metering is WAY OFF, eg. should be f5.0 1/200, it meters for f5.0 1/50.
i would have to do the followings to get the metering back to normal,
1. change to higher ISO
2. popup flash
3. change from 35mm to 17mm or visversa
4. remove lense, then reattach lense
once the picture is taken (under this slight blackish layer) the viewfinder suddenly turns back to normal without layer and the scene is brightly lit. The picture taken is WAY OVER exposed.
Weird enough, if i put on a 50mm prime, with polarizer filter and aim at the sky/clouds i can taken hundreds of pictures without the blackish layer/bad metering.
i can only think its the 17-35mm being bad, is that possible?
Not sure what other information i can provide here to anyone else who might seen this problem or know anything about this strange problem.
--
Thanks,
Chucks
