Confused......

Im going to buy used lens. But I dont know whether can it fit to my Kx camera. How to know?? i.e:

1) Takumar F 70-200mm 1:4-5.6 AF Lens
2) SMC Pentax M 28mm 1:2.8 wide angle lens Pentax K camera
3) SMC Pentax FA 35-80mm 1:4-5.6 Macro lens AF film - DLSR

really confuse with all the mount/bayonet/screw....
help me pls....

The FA 35-80 will work without problems (if you set the aperture ring to "A")
As for the Takumar, if it is an AF lens then it must be a KA mount and have the "A" setting so will function same as the 35-80.

The 28mm doesn't have an "A" setting on the aperture ring and is totally manual, it will work with the camera set to manual but the metering wont be perfect. You will also have to tell the camera (via the menu) to allow lenses without the "A" setting to be used.

For a comprehensive history of the Pentax K mount have a look here link any further question just ask.

Thanks fatspider.

U really make my day.

Happy New Year..

They will all work, but they're not particularly good lenses...

Look for the Pentax-F 35-70mm instead of the 35-80mm, it's a much better lens. Also look for the f3.5 version of that 28mm lens (written 1:3.5) as it's a lot sharper. Finally, the Takumar zoom lacks SMC lens coatings and in my experience of other lenses in that range will struggle to match the colour vibrancy of your kit zoom. Look for the Pentax-F 70-210mm or Pentax-F 80-200mm instead.