...put it on my Pentax ist DL but it seems that it's not working.. DO I have to set up the aperture. the shutter is not functioning everytim I use this lense. Pls. Help Thanks. Make sure the aperture ...
...metal or plastic ring from around the lens, and that left the "works" around the lens open to view: I can see two tiny screws the lens that are probably ordinarily covered. Is the lens supposed to be ...
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