Originally posted by acoufap In your initial post you wrote T2 mount. But this mount isn‘t availlable on the linked Ebay site. So you got it as Pentax K-mount, don‘t you?
it comes with a Pentax K adopter for free. Likewise, the listing offers the option to get it in any other brand mount ( Canon, Nikon etc)
---------- Post added 01-23-23 at 12:48 PM ----------
Originally posted by GUB Given that the filter thread is 105mm I suspect f8 is a bit suspect. (900 / 105 = 8.6).
another fellow on this forum of dp did some physics magic and had calculated that the actual mm is 880 that brinds it down to 8.38 but I cannot give an "oath". YET.... with KP's amazing SRII, ISO and sunny conditions in Greece, I am pretty much ok. After all, when I am using the 1.4x TC on my 55-300 PLM the F goes to 9 and some times KP refuses to take it "lower/faster" than F9.5. TBH this is more of an experimental toy. I just got more than I expected with alot, and I repeat a lot of Adobe Camera RAW TLC.
---------- Post added 01-23-23 at 12:55 PM ----------
Originally posted by GUB Given that the filter thread is 105mm I suspect f8 is a bit suspect. (900 / 105 = 8.6).
PS* For some reason I can't explain they state that the maximum diameter is 111 (the filter thread is 105mm 100% due to the hood I put) So 880/111 = 7.92
If anyone knows and reads this maybe they can explain.