michael_reichmann1 Posted December 29, 2001 Share Posted December 29, 2001 I have recently purchased and done some prelimiary tests with the Pentax 600mm f/4 for the Pentax 67. My hand-on comments can be found at http://www.luminous-landscape.com/600mm.htm I'll be happy to answer any questions about it's use here. Michael Link to comment Share on other sites More sharing options...
douglas_cummings Posted December 29, 2001 Share Posted December 29, 2001 A great test. My comment is directed to what I believe would really be the best compromise: The glass available to the Pentax 645 user. The 645 format clearly beats 35mm but the step up from 645 to 67 is not so marked. The 600mm 5.6 is usable @ 5.6 and is tack sharp @ 5.6 w/ no discernable chromatic aberration (therefore no "slower" than the 600 f4.0). Auto functions are maintained, and the newest body does have a mirror lock for slower shutter speeds (alas, will we ever get the lens as an auto focus?). Whatever the method used in printing, I would bet @ ANY size a "blinded" viewer would not be able to tell the medium format images apart, but would easily spot the 35. BTW, I tested the 800mm f4.0 and at least that sample was simply unacceptably soft with gross aberration at 4.0-8.0. (The Mamiya APO's are another story....) Link to comment Share on other sites More sharing options...
cp_wong Posted December 30, 2001 Share Posted December 30, 2001 hi, michael, the comment/test of P600 /f4.0 is fantastic. but i get question for your advice, instead of P67, i plan to get a P645 300 f4 ED +/-1.4 converter. so will it be good combination with Arca swiss B1 /gitzo 1227 for this short tele ( it's short for u:))? and quality of this lens? regards cp Link to comment Share on other sites More sharing options...
michael_reichmann1 Posted December 31, 2001 Author Share Posted December 31, 2001 I think that you may find the tripod a bit light for this combination. The only way to tell for sure is to run a test roll. Start at 1/250 sec and work your way down to about 1/8th. Have a look at my Pentax 67 review at http://www.luminous-landscape.com/pentax67ii.htm#another%20example for an example of this. You might want to consider the Manfrotto #359 support arm. http://www.luminous-landscape.com/359.htm Michael Link to comment Share on other sites More sharing options...
jeff_drew4 Posted December 31, 2001 Share Posted December 31, 2001 Michael, Outstanding info and photos! I am lusting for another P67 body and the P67II is a contender. Your info is enlightening and helpful. Thanks very much! Happy New Year! JJD Link to comment Share on other sites More sharing options...
michael_reichmann1 Posted January 3, 2002 Author Share Posted January 3, 2002 Anyone concerned about the chromatic aberration problem with the 600mm f/4, or any other long lens for that matter, should have a look at my review of a software solution to the problem. It can be found at http://www.luminous-landscape.com/chromatic.htm Michael Link to comment Share on other sites More sharing options...
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