Re: Recommendations for Wide Angle less than 28mm
Frantisek may be right. One reason I don't use my CZJ 20/2.8 that often is that the resulting pictures look so normal. I'm among the lucky few who own it in a retrofitted K mount. But it's not autodiaphgram; the view will grow dim as you stop down. Frantisek Vlcek [EMAIL PROTECTED] wrote: The 20/2.8 CZJ is almost as rectilinear as any largeformat wideangle. It has almost no distortion. I don't believe the 20/4 CZJ could be any more corrected for distortion than the 20/2.8 CZJ. [EMAIL PROTECTED] mail2web - Check your email from the web at http://mail2web.com/ . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Recommendations for Wide Angle less than 28mm
vvn 20/4 Carl Zeiss Jena (77mm filter). Not as sharp as the later 20/2.8 (which vvn shares the basic optical formula with the Pentax 20/2.8), but the 20/4 is vvn probably more rectilinear than any othe 20. All but the last batch were vvn single coated. And I'm araid none were K mount, just some M42s (and vvn Practica bayonet). The 20/2.8 CZJ is almost as rectilinear as any largeformat wideangle. It has almost no distortion. However, I think the sharpness can vary according to sample. I don't believe the 20/4 CZJ could be any more corrected for distortion than the 20/2.8 CZJ. And the later has the added benefit of MC. The SMC 15/3.5 is about as distortion-free as the best too (well, it's the best anyway). vvn Finally, check out the new Sigma 20/1.8 and 24/1.8; I believe each takes a vvn 77mm filter. They've been gaving great reviews, though don't expect the vvn build quality and coating to be up to Pentax standards. I didn't particularly like the 24/1.8 - especially in the corners. However, my testing was very informal and dirt quick, I must try it some another time. Good light, Frantisek Vlcek - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Recommendations for Wide Angle less than 28mm
Hi, I don't know who Frantisek was quoting, but I know he responded to the following: Frantisek Vlcek wrote: vvn 20/4 Carl Zeiss Jena (77mm filter). Not as sharp as the later 20/2.8 (which vvn shares the basic optical formula with the Pentax 20/2.8), But, I have read that the Ziess Jena f4.0 20mm is in fact sharper than the 2.8, and that despite being slower, the 4.0 is the preferable lens, due to it's sharpness. I have no personal experience, but I'd be interested in hearing from anyone who does, being that I'm always on the lookout for an ultra-wide (for the right price, of course g). thanks, frank -- The optimist thinks this is the best of all possible worlds. The pessimist fears it is true. -J. Robert Oppenheimer - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Recommendations for Wide Angle less than 28mm
What seems to be the consensus for the best (in terms of optical quality and build) for a wide angle lens less than 28mm. I am looking for a good, clean, and razor sharp lens with an angle of view greater than 90(degrees) for some landscape work. It is very important that the distortions be minimal since there are a lot of angles and lines in the scene that will quickly reveal imperfections. I am personally familiar with only three lenses that weigh in at 90 degrees or more in angle of view: The 180 degrees of the A 16/2.8 ~Fisheye~ can be dismissed quickly, I guess - distortions are ~not~ minimal - g. The A 20/2.8 is right around 90 degrees, and it's a very good lens (easily my most used lens wider than 28mm). However, it's not totally free of distortion (although it is very good in that regard). The A 15/3.5 (or the optically identical K 15/3.5) is an incredible lens, virtually free of distortion, a real rectilinear miracle. Amateur Photographer Magazine said, in its March 13, 1982, issue that distortion is remarkably low for such a wideangle, and in its December 15, 1990, issue that the deviation from the straight in the images is too small to be reported. The angle of view in this gem is 111 degrees. Fred - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Recommendations for Wide Angle less than 28mm
What seems to be the consensus for the best (in terms of optical quality and build) for a wide angle lens less than 28mm. I am looking for a good, clean, and razor sharp lens with an angle of view greater than 90(degrees) for some landscape work. It is very important that the distortions be minimal since there are a lot of angles and lines in the scene that will quickly reveal imperfections. Jason - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Recommendations for Wide Angle less than 28mm
Jason Vick wrote: What seems to be the consensus for the best (in terms of optical quality and build) for a wide angle lens less than 28mm. I am looking for a good, clean, and razor sharp lens with an angle of view greater than 90(degrees) for some landscape work. It is very important that the distortions be minimal since there are a lot of angles and lines in the scene that will quickly reveal imperfections. Jason, Some wide angles are free of distortion, others are razor sharp. Since you insist on both, you help narrow the field: 20/4 Carl Zeiss Jena (77mm filter). Not as sharp as the later 20/2.8 (which shares the basic optical formula with the Pentax 20/2.8), but the 20/4 is probably more rectilinear than any othe 20. All but the last batch were single coated. And I'm araid none were K mount, just some M42s (and Practica bayonet). SMC Pentax 24/3.5K. As good as it gets in sharpness and rectilinearity, with SMC coating, too. SMC Pentax 24/2 FA. Perhaps not quite as distortion-free as the 24/3.5K, but it just may be sharper. And it's certainly faster! Even die-hard fans of manual focus succumb to its awesome optical quality. Finally, check out the new Sigma 20/1.8 and 24/1.8; I believe each takes a 77mm filter. They've been gaving great reviews, though don't expect the build quality and coating to be up to Pentax standards. [EMAIL PROTECTED] mail2web - Check your email from the web at http://mail2web.com/ . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
