----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 07, 2001 11:49 PM Subject: EOS Canon F stop display - how about this one? > HI All, > I notices something interesting about F stop display and how one of my > lenses reacts to it. > It's Tokina 35-300 4.5-6.7. At the long end (300) where it's supposed to be > 6.7 it always only goes to 5.6. Regardless on which body - Elan (original), > RT or 1n. Only 1n is the body where F stops can be adjusted to either 1/3 or > 1/2. Furthermore - When this lens is at 300mm, wide open and displays on > camera body 5.6 instead of 6.7, and I look inside the lens from the front, > while holding the DOF button, - I can actually see that at that 5.6 it is > wide open and when I switch to 6.7 - the advertised F stop it's supposed to > be on the long end - I can actually see that blades move to close it down a > bit. All this makes it look like it's a 4.5-5.6 lens. not 4.5-6.7. > So, - the question is - is this lens really 5.6 at the long end and not 6.7 > like Tokina says it is? Or am I lucky to get the unusual one? > BTW - AF, that's supposed to not work after 5.6 - works well too at the long > end. > Any comments, ideas on this? > George > > My web page: > > http://members.nbci.com/_XMCM/Yegey/EntrancePage.html As I remeber, it only reports 5.6 to the camera for keeping it AF. But then it can be constructed to close down to 6.7 as it has too much distotion at 5.6??? Good light Grega _____ Grega Fenko Topolsica 57 SI 3326 Topolsica SLOVENIA http://fenko.8m.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
