I'm not great on how it's meant to be labeled, but it goes from f/5.6 to f/32 unless I'm completely misunderstanding how it's labeled!
Across the aperture ring it has settings for AP 32 22 16 11 8 5.6.
I'll play with on the camera later, because now due the convincing explanation of the 50mm, I'm an excited new owner of a Pentax K110d.
Also, my dog is trying to figure out what, "No stay, no over there, sit sit SIT SIT OVER THERE! IN THE LIGHT DANG IT" means.
EXIF (Hand modified)
Camera: Pentax K110D
Exposure: 0.008 sec (1/125)
Aperture: f/1.7
Focal Length: 50 mm
ISO Speed: 200
Exposure Bias: 0/10 EV
Flash: Flash did not fire
Lens: SMC Pentax-M 50mm f1.7 (non digital!)
*Edit* Forgot to say, thanks a ton mattdm! I spent about hour with the lens in hand and the salesclerk trying to convince her, No really, I promise, they PROMISED this camera will work with ALL Pentax lenses. She was extremely helpful, but between the two of us (and a call to her manager in a different store) we could not figure out it and the owner's manual wasn't very explicit. It would just flash the AV -- and F -- indicators and refuse to take a picture. Turns out there's a buried setting in the bottom of the Custom Settings list that allows you to take a picture with a lens without the auto aperture setting that she finally found and made her sale!