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With the important caveat that this post is largely speculation, let's anticipate the performance characteristics of the M10-R sensor.
The Leica S3 sensor is 45x30 mm (1350 sq mm) and the DNG files are 9816 x 6512, for a total pixel count of 63,921,792 pixels, or 47,349 pixels per sq mm
The Leica M10 Monochrom sensor is 36 x 24 mm (864 sq mm) and the DNG files are 7864 x 5200 = 40,892,800 pixels, or 47,330 pixels per sq mm.
The pixel density of the two sensors is so similar that I assume the discrepancy comes from non-scaling edge usage factors, and/or small 0.01 mm-scale rounding errors in sensor size.
So if we assume that the S3 sensor and the M10 Monochrom sensor come from the same process, differing only in size and the presence of the Bayer color filter array in the former, then it's reasonable to assume the M10-R sensor also comes from the same process, and is basically a 36 x 24 mm crop of the S3 sensor (as others have hypothesized in this forum previously).
If this reasoning is correct, then you can expect the M10-R sensor to be the same as the M10M sensor, plus a Bayer CFA, and to perform more or less the same as the S3 sensor on a per-square-mm basis. Therefore, I would expect:
- DNG files that are 7864 x 5200 = 40,892,800 pixels
- Dual gain design
- 4.6 µm pixel pitch
- Base ISO = 100
- ISO range = 100-50,000 (basically one stop lower than the 160-100,000 ISO range of the M10 Monochrom, as one might predict from the lack of the Bayer CFA in the M10M)
- 14 bits per pixel
Good ISO 12,500 photos and decent ISO 25,000 photos would be terrific, and a significant improvement over the M10/M10-P, as noted here:
I was wondering, what takes them so long? Word on this forum is that the camera will be presented and available in September, which will be a year after Photokina.
Do they want to come out with a flawless medium format camera and is the tweaking of the camera taking much longer than originally expected and if so, how come? Are certain parts perhaps unavailable?
Or are they working on new features that's weren't announced at Photokina to make the camera more competitive, and what could those be?
Does anyone have any idea?
Back then, at the end of R camera and lens production, we were promised a "new" R camera to replace that well-loved camera and its lenses.
The SL can mount R lenses and it can help you focus a MF R lens with Live View and the joy stick enlargement. But mounting an R lens on an SL is only half of providing an equivalent R camera.
The MF experience is a two-fold hand and eye operation: focusing the lens by hand AND using a split-field viewfinder to focus it. That latter step is not now available for the SL, but could be furnished very simply.
In AF mode, the SL sensor gets light through the mounted AF lens, detects the degree of un-focus (the error signal), and issues commands to the lens's motor to focus it.
With a MF lens attached, everything is the same except that the commands have no where to go and are not used.
To me there is a simple way to use that degree of un-focus (the error signal) with a MF lens.
Let it drive a computer- generated image of a split-field viewfinder.
As the MF lens is focused by hand, in lieu of a motor, the state of focus would be displayed as if there was a real, split-field optical viewfinder in use. Thus the eye-hand manual focus of the R camera would be preserved in the SL, or other AF cameras that can mount a MF lens.
Think about it this way:
Simply replace the motor focusing an AF lens with a hand focusing a MF lens, guided by a synthetic computer-generated split-level display in the Electronic View Finder.
With this bit of digital skullduggery, any AF camera with an EVF which can mount a MF lens can be used exactly like any MF camera with a split-field rangefinder.
I hope Leica will provide this feature in the near future so that R lens fans can use their MF lenses with an SL body just the way they used them on an R camera body.
Next model in the S-line will called S3. Just as the latest M went back to sequential numbering this model will drop the typ naming. 64MP, launch late this year (after PK). Better grab those used S lens bargains
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