(I ended up venting a few ideas in this email.. I apologize for making it so long!!!)
zeos 386sx said:
Leica has range/viewfinders now that frame to 28mm on the low end and 135mm on the high end. Why not offer two optional viewfinders - One for the 20 to 40 range and another for the 50 to 135 range? Most pros carry more than one camera. That kind of viewfinder variety would make sense.
Is there a technical reason it couldn't be done?
I guess this suggests two possibilities: (1) interchangeable viewfinders on a single camera, or (2) two distinct camera models that differ only in the viewfinders.
A small extension of the 2nd idea gives a third possibility: Wide angle lenses face problems with vignetting, but I have not heard that normal to tele lenses with face the same problem. So maybe we could have two models:
1. A digital M that caters for normal to tele length lenses (50mm+) that uses a full frame.
2. A wide-angle digital M with a sensor that is specifically designed for wide-angle lenses (50mm-). It might have a 1.3x crop, or it may use other technology to correct the vignetting problem. It may be easier/better to provide a solution that corrects wide angel lenses without being concerned about the tele lenses.
Suppose that the 1.3x factor is the only solution to the wide angle problem. The the DM-NT (digiM Normal to Tele) and the DM-W (digiM wide) would have effective folocal lengths of:
DM-NT 50-135
DM-W 28-65 (using 21-50mm lenses...wider if you go for CV/Zeiss lenses)
As RML and Jaap hint, two cameras may be bit expensive for most of us. But for some, this might be a realistic option.
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Yet another possibility is to do what Nikon does with one of their latest cameras: they have a faster shooting mode where only the central 6MP (or something like that) are used. The digiM could have a "crop mode" where only the central 1.3x crop area is stored (with present technology, outside that crop area is virtually unuseable anyway IMHO).
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(I think this next bit has been said already.. but I'm in a chatty mood so I'll say it anyway
🙂 )
If a smaller sensor is used, then Leica (and others) can begin developing new wide angle lenses that are designed to be optimal for this sensor size. I am guessing that the newer normal to tele lenses are probably sharp enough to get the most out of digital sensors in the near future (next 15 years?). With a smaller sensor, Leica can probably start offering higher-aperture wide-angle lenses in the current focal length range, and then bring out new wide angle lenses in the ultra-wide range (12-18mm). The smaller sensor should allow such lenses to be sharper without the lens itself getting significantly larger.
It would make sense for Leica to decide on a format for a sensor size, and stick to that format so they can develop a range of lenses suitable to that format.
(I don't enough to argue why this is the case... I am mainly reflecting what I have read recently, in particular:
www.imx.nl discusses a few aspects of this).
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Personally, I am finding that I enjoy the 1.5 crop factor on the R-D1. Even with the crop fator, I still find that I am mostly shooting using the 50 and 90. That has a lot to do with my current photograhic interest (dance performances).