This Lens is a full-frame very wide-angle lens We use primarily with SONY E mount this might be my personal favorite lens.
We also have mounts for Nikon Canon EOS and 4/3" MFT and Pentax
This is a MANUAL FOCUS MANUAL APERTURE Lens only
Very Sharp Great for showing Small rooms or for any wide-angle purpose you can think of.
Will Sell with Sony E mount or 4/3MFT for $450 we Rent it $30.00 day
"A very good ultra-wide-angle lens with excellent sharpness and contrast. Notably, this lens has an almost non-existent lateral color!
Focal Length (mm) 17
Apature Maximum 3.5
Apature range 0
field of view 104
optical construction (elements / groups) 12/10
Coatings BBAR Multi layer
Minimum focus distance (mm from film plane) 250
magnification ratio 0
filter diameter NB the internal diameter of the front of the lens is 67mm but has NO thread: (mm) 82 F
"length( mm at infinity)" 43
maximum diameter (mm) 70
"weight (g)" 290
Read more at: https://www.pentaxforums.com/userreviews/tamron-adaptall-2-sp-17mm-f-3-5-51b.html#ixzz6Y2Miv5pj
Focal Length (mm) 17
Apature Maximum 3.5
Apature range 0
field of view 104
optical construction (elements / groups) 12/10
Coatings BBAR Multi layer
Minimum focus distance (mm from film plane) 250
magnification ratio 0
filter diameter NB the internal diameter of the front of the lens is 67mm but has NO thread: (mm) 82 F
"length( mm at infinity)" 43
maximum diameter (mm) 70
"weight (g)" 290
Read more at: https://www.pentaxforums.com/userreviews/tamron-adaptall-2-sp-17mm-f-3-5-51b.html#ixzz6Y2Miv5pj