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Sometimes we all become too interested in the camera body because that is where most of the gadgets are. But it is the lens that makes the picture and most often the lens has a more direct influence on the eventual image quality 'output'. If economy is a consideration, you should consider buy a less expensive camera body rather than less expensive lenses. If you buy a SLR camera with only one lens is also not logical because you might as well buy a cheaper camera with a fixed, non-interchangeable lens like a P&S. But modern lenses has such fantastic features such as high power zoom with previously unimaginable zoom range which actually makes a single-lens-do-all photographic system viable. All those messages posted on the variuos Message Boards for SLR Models are not short of interesting comment and remarks on lenses. Well, not to confuse others who are just interested in cameras, I thought there is a neccessity for a separate Message Board for those who are interested in discussion on various issues on lenses as well..
Unlike the Message designed for camera of various makes, this MB is one-for-all type and thus I hope this section can be maintained as a peaceful zone. The maintainer of this site reserved all the right to censor or even delete any un-related, excessively hostile messages posted herein. This site is specifically created just for lenses. If your intention is to dispose your optics or looking for any used unit, please use the Free Trade Zone site instead. The Photography In Malaysia has no Guestbook on its own, because it is an integral part of the MIR site. But if you want to leave a note on your experience visiting this site, you may use the MIR's MIR Guestbook | instead.
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Canon Manual Focus FL-mount Lenses | FD(n) Manual Focus Lenses | Autofocus EF Lenses
| Nikon RF-Nikkor Lenses | Nikon Manual Focus Nikkor Lenses | Autofocus (AF) Nikkor Lenses
| Olympus OM Zuiko Lenses | Contax T* Lenses
Url : http://
Date : 03:30 PM Monday 26 February, 2007
Thank You for the detailed description on the AF Nikkor 180mm, almost bought (paid XTra) for an older version. Internet requires good site like this !2. From : Jan Steinman (Jan@Bytesmiths.com)
Url : http://www.Bytesmiths.com
Date : 02:32 AM Monday 26 February, 2007
I've just tested a bunch of OM telephoto lenses, including:
• Soligor 180mm ƒ3.5 T-mount
• Zuiko 180mm ƒ2.8
• Tamron 300mm ƒ2.8
• Zuiko 300mm ƒ4.5
• Vivitar 500mm ƒ8 macro mirror
• Zuiko 500mm ƒ8 Reflex
• Zuiko 600mm ƒ6.5
• Bausch & Lomb 800mm ƒ10 mirror
• Celestron C90 1000mm ƒ11 mirror
Results are here:
http://www.bytesmiths.com/OM_Tele
Enjoy!3. From : Tony (complements@yoursite.com)
Url : http://none
Date : 01:10 AM Sunday 25 February, 2007
Hi .. that is a pleasant surprise. (as I read between the lines that I thought your are anti-autofocus)- Just found the lovely new sites on Canon EF and Autofocus Nikkor sections, simple lovely ! for so long ... to see this to be realized !4. From : www.PentaxWorld.com (nospam@gmail.com)
Url : http://PentaxWorld.com
Date : 07:46 PM Thursday 22 February, 2007
Introducing a new website for Pentax users and supporters! www.PentaxWorld.com - the world of Pentax users! Pentax have just announced a few new lenses and information on Pentax 645D, can be viewed at PentaxWorld front page. Thank you!5. From : Ken Durling (kdurling@comcast.net)
Url : http://
Date : 02:09 AM Sunday 18 February, 2007
Thanks Ric, for the refresher! Most helpful . Ken6. From : rick oleson (rick_oleson@yahoo.com)
Url : http://rick_oleson.tripod.com
Date : 10:38 AM Saturday 17 February, 2007
Hi Ken: The basic intent of the add-on diopter lenses is that they be used with the prime lens set at infinity. If you do that, then the distance to the object is measured from the add-on lens itself, so in the case of the 40CM lens you would focus at 400mm from the filter ring.
Calculating the effect of a diopter lens on top of a focusing mount is a little more fussy..... the shorthand that I use is to convert everything to diopters and add it up:
1 diopter is the reciprocal of 1 meter of focal length. The 50mm normal lens focuses to about 1/2 meter in its mount, so that's 2 diopters, and the 40CM lens adds another 2.5 diopters of power for a total of 4.5. If you take the reciprocal of 4.5 you get 0.22 meters or about 9 inches from the lens to the object at the near focus limit. This is not quite exact, as the prime lens focus is measured from the film plane and the diopter is measured from the front of the lens, but it gets you pretty close. rick :)=7. From : Ken Durling (kdurling@comcast.net)
Url : http://
Date : 04:28 AM Saturday 17 February, 2007
My macro theory is a bit rusty. I see from this discussion that these Oly close-up lenses' f=40cm designation that they are considered to have a focal length of 400mm. I guess that would put the front nodal point some 350mm out in front of a 50mm lens? Would that then represent their far focusing limit? I'm not clear on how the 400mm FL of the add-on lens combines with the FL of the prime. Sorry, told you I was rusty....8. From : Michael (reflecta10@yahoo.com)
Url : http://
Date : 12:15 AM Saturday 17 February, 2007
Hi. Can some tell me if the Carl Zeiss Jena 70-210mm was originally manufactured with the praktica pb bayonet mount ? If so , is there such an adapter to convert this lens to use on a Nikon dslr ?9. From : Matthew (isaiah6113@hotmail.com)
Url : http://
Date : 02:18 AM Friday 16 February, 2007
Walt, Thank you very much! Excellent site. Matthew
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Url : http://
Date : 08:43 PM Thursday 15 February, 2007
Matthew, See this site: www.alanwood.net/photography/olympus/close-up-lenses.html
Maintainers for Various Optic Message Board:
Rick Oleson (rick_oleson@yahoo.com); Greg Chappell (gregmchappell@nww.net), Luigi D. Sandon (cp@sandon.it); Ken Durling (kdurling@kendurling.net); Robert Glenn Middleton (the_redd_groyne@hotmail.co.uk)
In memory of Mr. Ken Durling (1951-2007)
who had served this board for the last 8-10 years with al his love and passion on photography.| Post a Message to the Message Board |
Canon Manula Focus FL-mount Lenses | FD(n) Manual Focus Lenses | Autofocus EF Lenses
| Nikon Manual Focus Nikkor Lenses | Autofocus AF-Nikkor Lenses
| Olympus OM Manual Focus Zuiko Lenses | Contax T* Lenses
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