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#181
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poco wrote:
TP wrote in newsfitk05ju5e5lr8i4simq3u91nco9fi4vl@ 4ax.com: poco wrote: (Steven Scharf) wrote: Nikon desperately needs a larger sensor. I think what Nikon needs to do is give full commitment to their DX format. And that is exactly what Nikon is doing. What I meant was perhaps Nikon should make a new mount to optimize the DX CMOS size. F-mount is made for the lens to project on 35mm film size, and current DX lines are merely a makeshift solution that doesn't truly take advantage of the smaller projection size. Good grief. There is perhaps a (very)slight justification for arguing that the throat of the Nikon F mount is too small. Arguing that it is too large is almost beyond belief. (This could only have appeared via rec.photo.digital, the world's greatest repository of nonsense about photography.) |
#182
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In rec.photo.equipment.35mm poco wrote:
TP wrote in newsfitk05ju5e5lr8i4simq3u91nco9fi4vl@ 4ax.com: poco wrote: (Steven Scharf) wrote: Nikon desperately needs a larger sensor. I think what Nikon needs to do is give full commitment to their DX format. And that is exactly what Nikon is doing. What I meant was perhaps Nikon should make a new mount to optimize the DX CMOS size. F-mount is made for the lens to project on 35mm film size, and current DX lines are merely a makeshift solution that doesn't truly take advantage of the smaller projection size. You are crazy, you know that? By making a mount that is optimized to project DX size image circle, Nikon should be able to make smaller and faster lenses, not to mention that 35mm(I'm guessing rougly on the focal lenth that would be a 'normal' on such mount) would give same perspective AND same field of view as 50mm for the F-mount would. Besides, since the new mount would be closer to the imager plane, I would think it would be too hard to build a simple spacer adaptor for the old F-mount lenses to fit on the new mount if the new mount has sufficient mount opening. Of course, I'm not exactly versed in optics, the logistics might as well be impossible. I would love to hear explanations though. It's been getting harder and harder to be educated in usenet for a while. If you are not well versed in optics why the heck did you just write this???? What matters is *NOT* the mount size but the cicrle that the lens projects. -- Sander +++ Out of cheese error +++ |
#183
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In rec.photo.equipment.35mm poco wrote:
TP wrote in newsfitk05ju5e5lr8i4simq3u91nco9fi4vl@ 4ax.com: poco wrote: (Steven Scharf) wrote: Nikon desperately needs a larger sensor. I think what Nikon needs to do is give full commitment to their DX format. And that is exactly what Nikon is doing. What I meant was perhaps Nikon should make a new mount to optimize the DX CMOS size. F-mount is made for the lens to project on 35mm film size, and current DX lines are merely a makeshift solution that doesn't truly take advantage of the smaller projection size. You are crazy, you know that? By making a mount that is optimized to project DX size image circle, Nikon should be able to make smaller and faster lenses, not to mention that 35mm(I'm guessing rougly on the focal lenth that would be a 'normal' on such mount) would give same perspective AND same field of view as 50mm for the F-mount would. Besides, since the new mount would be closer to the imager plane, I would think it would be too hard to build a simple spacer adaptor for the old F-mount lenses to fit on the new mount if the new mount has sufficient mount opening. Of course, I'm not exactly versed in optics, the logistics might as well be impossible. I would love to hear explanations though. It's been getting harder and harder to be educated in usenet for a while. If you are not well versed in optics why the heck did you just write this???? What matters is *NOT* the mount size but the cicrle that the lens projects. -- Sander +++ Out of cheese error +++ |
#184
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TP wrote in message . ..
poco wrote: TP wrote in newsfitk05ju5e5lr8i4simq3u91nco9fi4vl@ 4ax.com: poco wrote: (Steven Scharf) wrote: Nikon desperately needs a larger sensor. I think what Nikon needs to do is give full commitment to their DX format. And that is exactly what Nikon is doing. What I meant was perhaps Nikon should make a new mount to optimize the DX CMOS size. F-mount is made for the lens to project on 35mm film size, and current DX lines are merely a makeshift solution that doesn't truly take advantage of the smaller projection size. Good grief. There is perhaps a (very)slight justification for arguing that the throat of the Nikon F mount is too small. Arguing that it is too large is almost beyond belief. (This could only have appeared via rec.photo.digital, the world's greatest repository of nonsense about photography.) Sounded to me like the poster was arguing for a mount that's closer to the sensor, not smaller in diameter. There is some merit to this. Brian www.caldwellphotographic.com |
#185
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Dallas wrote:
Please bear in mind that the "full frame" sensor of the EOS 1Ds is actually two 6 megapixel CMOS chips welded together. http://www.dpreview.com/news/0409/04091605nikond2x.asp looks suspiciously like a single piece to me (look near bottom of linked page). -- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.-- |
#186
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Dallas wrote:
Please bear in mind that the "full frame" sensor of the EOS 1Ds is actually two 6 megapixel CMOS chips welded together. http://www.dpreview.com/news/0409/04091605nikond2x.asp looks suspiciously like a single piece to me (look near bottom of linked page). -- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.-- |
#187
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Dallas wrote:
Please bear in mind that the "full frame" sensor of the EOS 1Ds is actually two 6 megapixel CMOS chips welded together. http://www.dpreview.com/news/0409/04091605nikond2x.asp looks suspiciously like a single piece to me (look near bottom of linked page). -- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.-- |
#188
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"Howard McCollister" wrote in message ... "Steven M. Scharf" wrote in message ink.net... Nikon also desperately needs to update their lens mount, and move to a larger diameter mount. Part of Nikon's dissing of full frame may relate to their antiquated, small diameter lens mount. The EOS mount has paid big dividends for Canon. That just doesn't make any sense. You'll have to explain why you think that is true. It has probably been explained 100 times in the past 10-15 years. "A small throat leads to mirror cutoff with telephotos, and a simple inability to have large rear elements with shorter lenses." The EOS mount, combined with the BWLs, is the reason why Canon took the sports photography market away from Nikon. |
#189
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"Howard McCollister" wrote in message ... "Steven M. Scharf" wrote in message ink.net... Nikon also desperately needs to update their lens mount, and move to a larger diameter mount. Part of Nikon's dissing of full frame may relate to their antiquated, small diameter lens mount. The EOS mount has paid big dividends for Canon. That just doesn't make any sense. You'll have to explain why you think that is true. It has probably been explained 100 times in the past 10-15 years. "A small throat leads to mirror cutoff with telephotos, and a simple inability to have large rear elements with shorter lenses." The EOS mount, combined with the BWLs, is the reason why Canon took the sports photography market away from Nikon. |
#190
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"Sander Vesik" wrote in message ... In rec.photo.equipment.35mm Jeremy Nixon wrote: poco wrote: If Nikon was to give full commitment to DX format, I don't see why they couldn't develope true DX lenses that can include something like 20mm f1.4 or 300mm f1.4. Even if Nikon has to abandon F mount in such system, I would think smaller fast lenses would attract enough photographers to make it a success. My dream is a 50mm f/0.9. That would rule. And I don't see why they'd have to abandon the F mount to do it; I don't know much of anything about lens They wouldn't have to. design, but they've got an 85/1.4, which works out to a 60.7mm aperture, and f/0.9 on 50mm is only like 55.5mm, so it'd be a smaller aperture than they've already got working just fine with the mount now. Aperture on the just announced 300mm f/2.8 is even larger. Aperture is not really controlled or affected that much by the lens mount size. We must remember that Topcon did have a 300mm f:2.8 on their tiny slightly modified Exacta mount in the 1970's. So exit pupil size can be overcome. |
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