Originally posted by kcobain1992
Yes, but you see, I still strongly believe that all your pictures were taken wide open, and here's why: there isn't a single exposure taken at less than 1/640. In fact, you have 3 exposures at 1/2000th of a second, 3 at 1/4000, 2 at 1/6400, one at 1/1600 and one at 1/8000. If I were you, I'd close the aperture all the way, and then take a picture so I can actually if the aperture is closing or not.
By the way, M42 mean screw mount, you screw the lens to keep it fixed. Pentax K is a bayonet mount - you only twist it about 60 degrees and it is locked.
OK fair enough. I will take a few pictures right now in manual mode at 1/25 or 1/50 depending on how the exposure is, at ISO 100, with the ring completely closed down. Thanks for the explanation of the M42. With that understanding mine is definatly the K bayonet mount. BTW, I have taken a few peoples suggestion of trying to meter in green mode, but unless I am doing something incorrect, it cannot happen because when switched to green mode, the camera goes into Av mode with auto exposure and there is no way to overide it and the LCD shows nothing for shutter speed, and the aperture says F - - and nothing can be altered. I should also mention something that I realized I neglected so far, that like anytime you attach a manual lens, it asks you to enter the focal length, which I enter as 15mm (lens being 16mm) because it is closer than the next option of 18mm.
I am sorry if I am frustrating everyone, I am trying everyones suggestions and I really do appreciate the help.