easiest way to verify 8 element version is the rear element sticking out more than the protective rim. If you sit the lens down te glass can get easily scratched and many used examples indeed have scratch rear elements...
-- J.C. O'Connell (mailto:[email protected]) Join the CD PLAYER & DISC Discussions : http://tech.groups.yahoo.com/group/cdplayers/ http://launch.groups.yahoo.com/group/cdsound/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of P. J. Alling Sent: Thursday, July 15, 2010 2:21 PM To: Pentax-Discuss Mail List Subject: Re: A good lunch break... > Does the AWB compensate for the thorium color shift or is the UV > clearing on the S-M-C required? It will try. How successful it will be is another issue. On 7/15/2010 12:53 PM, CheekyGeek wrote: >> When my FA50 was in the shop, I was using a supertak 50/1.4 with an >> adapter for dance photography. The difference in tactile quality between the two lenses is unbelievable. >> > I agree. However, one of the funny aspects of AF lenses is that they > require no tactile/hands-on for ANYTHING. The "old school" MF lenses > REQUIRE you to put your fingers on them and (IMHO) that is a big part > of what we old farts have come to think of as Real Photography - as > opposed to simply button pushing. (I know there is a lot more to > Photography than focus, but you may get my drift.) > > Before I got this one I really hadn't paid a lot of attention to the > differences between the various 50mm f1.4 Takumars. I've now got a > Super Takumar and the Super-Multi-Coated Takumar. Looking at the front > elements, the Super Takumar glass appears more "golden" in color, but > this must be a quality of the coating (reflection) because when I hold > them both up and look through them at my computer monitor (on white) > the S-M-C is definitely a yellow/brown cast (Thorium element needing > UV treatment). > > Other than that, the Super Tak is a few millimeters shorter and has 6 > aperture blades as opposed to the S-M-C's 8. After doing some > research, I see that there were two versions of the Super Tak. The > earlier version was an 8 element design and is reportedly less sharp > than the later 7 element Thorium design (which continued through the > S-M-C - not sure about the SMC rubber focus ring version). That's the > one I have. You can tell by the placement of the red IR focus > indicator. If it is between the f4 marks it is the older 8 element. > Outside the f4 marks it is the newer 7 element design. > > Should be fun running some side-by-side tests of these lenses on my > K-x. Does the AWB compensate for the thorium color shift or is the UV > clearing on the S-M-C required? > > Darren Addy > Kearney, NE > > -- {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Courier New;}} \viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the interface subtly weird.\par } -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
