Comments on: Lens Genealogy – Part 2 http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2 Photo/video thoughts from the largest rental house Mon, 20 May 2013 21:20:26 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: http://tinyurl.com/famiglynn47703 http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-27621 http://tinyurl.com/famiglynn47703 Wed, 23 Jan 2013 13:46:14 +0000 http://www.lensrentals.com/blog/?p=3083#comment-27621 “LensRentals.com - Lens Genealogy - Part 2” ended up being a relatively pleasant posting, . I hope you keep posting and I'll try to keep reading! Thanks ,Bailey “LensRentals.com – Lens Genealogy – Part 2” ended up being a relatively
pleasant posting, . I hope you keep posting and I’ll try to keep reading! Thanks ,Bailey

]]> By: Yuri http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-24144 Yuri Mon, 29 Oct 2012 12:36:59 +0000 http://www.lensrentals.com/blog/?p=3083#comment-24144 Hi Roger! Thank you for the good lens genealogy. It makes the matter much more systematic and clear. But.. You almoust completely avoid Triplet – Ernostar – Sonnar thread. Even no scheme of famous Zeiss Sonnar... Of course it mostly related to Rangefinder era of photography but it was very important part of lens history / chronology. Can I ask you to… add it? May be as Part III? Or update Triplet chapter? Please… With this part genealogy will look perfect! Thank you in advance! Hi Roger! Thank you for the good lens genealogy. It makes the matter much more systematic and clear. But.. You almoust completely avoid Triplet – Ernostar – Sonnar thread. Even no scheme of famous Zeiss Sonnar… Of course it mostly related to Rangefinder era of photography but it was very important part of lens history / chronology. Can I ask you to… add it? May be as Part III? Or update Triplet chapter? Please… With this part genealogy will look perfect! Thank you in advance!

]]> By: Bill http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-3423 Bill Tue, 07 Feb 2012 15:19:07 +0000 http://www.lensrentals.com/blog/?p=3083#comment-3423 Roger, Thanks for the very informative article(s). An obvious question seems to be why no one has designed an SLR camera where the mirror is hinged in the front and swings down so as not to interfere with the lens. I guess there would be complications from moving the film/sensor plane back? Roger,
Thanks for the very informative article(s). An obvious question seems to be why no one has designed an SLR camera where the mirror is hinged in the front and swings down so as not to
interfere with the lens. I guess there would be complications from moving the film/sensor plane back?

]]> By: Roger Cicala http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2289 Roger Cicala Thu, 03 Nov 2011 11:02:23 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2289 Joel, I'm not certain of the answer to that. Most of the time it's a decision on whether it's worth the cost, etc. But in the case of the 50mm you mention or certain other primes, it would seem adding an IS group would interfere to some degree with the original layout of the lens if it's symmetrical. Roger Joel,

I’m not certain of the answer to that. Most of the time it’s a decision on whether it’s worth the cost, etc. But in the case of the 50mm you mention or certain other primes, it would seem adding an IS group would interfere to some degree with the original layout of the lens if it’s symmetrical.

Roger

]]> By: Joel http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2260 Joel Tue, 01 Nov 2011 15:22:52 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2260 Roger, one other general question - does lens genealogy also account for the inclusion or exclusion of image stabilization (IS) in certain classes of lenses? For example, you can readily find a 17-50mm or 70-200mm zoom with IS, but apparently nobody makes a 50mm prime with IS. Roger, one other general question – does lens genealogy also account for the inclusion or exclusion of image stabilization (IS) in certain classes of lenses? For example, you can readily find a 17-50mm or 70-200mm zoom with IS, but apparently nobody makes a 50mm prime with IS.

]]> By: Roger Cicala http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2246 Roger Cicala Fri, 28 Oct 2011 23:52:42 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2246 Hi Joel, You are correct on all the assumptions above! Although the teleconverter on a zoom thing is more than just the telephoto design. Roger Hi Joel,

You are correct on all the assumptions above! Although the teleconverter on a zoom thing is more than just the telephoto design.

Roger

]]> By: Joel http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2241 Joel Fri, 28 Oct 2011 16:38:28 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2241 Roger, excellent and enlightening article. A related question - I have a Kenko 1.4x teleconverter, and I know from here and other sources that it will work pretty well on long primes and zooms, not so well on standard zooms and wide angle lenses. Is this a result of teleconverters being designed to work best with Telephoto design lenses? And could I reasonably extrapolate that my 1.4x will tend to work better with the Canon 85mm f1.8 (Telephoto) than with the Canon 85mm f1.2L (Double Gauss)? Roger, excellent and enlightening article.

A related question – I have a Kenko 1.4x teleconverter, and I know from here and other sources that it will work pretty well on long primes and zooms, not so well on standard zooms and wide angle lenses. Is this a result of teleconverters being designed to work best with Telephoto design lenses? And could I reasonably extrapolate that my 1.4x will tend to work better with the Canon 85mm f1.8 (Telephoto) than with the Canon 85mm f1.2L (Double Gauss)?

]]> By: Walter http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2147 Walter Wed, 12 Oct 2011 03:01:36 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2147 Wow -- very interesting reading, extremely well done so as to be comprehensible (to a degree) to those of us who are interested but have no background per se in optics. Thank you so much for taking the time to do this!! Wow — very interesting reading, extremely well done so as to be comprehensible (to a degree) to those of us who are interested but have no background per se in optics. Thank you so much for taking the time to do this!!

]]> By: Paul Byrnes http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2143 Paul Byrnes Tue, 11 Oct 2011 22:19:00 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2143 Very interesting Roger, but who knew that Carl Zeiss invented the Teletubbies? Knew there was a reason I love all things Zeiss.... Very interesting Roger, but who knew that Carl Zeiss invented the Teletubbies? Knew there was a reason I love all things Zeiss….

]]> By: bluto http://www.lensrentals.com/blog/2011/09/lens-genealogy-part-2/comment-page-1#comment-2089 bluto Thu, 06 Oct 2011 15:21:31 +0000 http://www.lensrentals.com/blog/?p=3083#comment-2089 When dealing with telephoto and reverse telephotos, the rear groups are frequently derived from one of the other 4 designs. When dealing with telephoto and reverse telephotos, the rear groups are frequently derived from one of the other 4 designs.

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