[Leica] One way to justify a M10R

[mak at teleport.com (Mark Kronquist)]

Crop factor? The m8 and 8-2 yes but the M9 on are full frame.  Am I missing 
something? Mark

Sent from my iPhone

> On Feb 6, 2020, at 11:37 AM, John McMaster <john at mcmaster.co.uk> wrote:
> 
> ?It will doubtless have better low-light capability than the M9, probably 
> M(240) and maybe M10...
> 
> john
> 
> -----Original Message-----
> From: LUG [mailto:lug-bounces+john=mcmaster.co.uk at leica-users.org] On 
> Behalf Of Frank Filippone via LUG
> Sent: 06 February 2020 19:33
> To: forum at leica-camera-forum.com; LUG
> Cc: Frank Filippone
> Subject: [Leica] One way to justify a M10R
> 
> I am not going to try to justify the cost issues, but I do want to help
> users decide one advantage they are getting from buying an M10R once it is
> available.  I am going to assume the resolution of the new camera will be
> 46MP.  (there are reports of 42 and 46MP.  The analysis does not change
> much between these numbers. so let's think positive, 46MP)
> 
> Remember that these advantages are relative to your old setup.  The
> decision that this argument is making is... should I upgrade to an M10R
> from my old Digi-M?
> 
> It is all about Cropping.  If you need an end resolution of AxB pixels, and
> you take an image that is more pixels than this, you can use cropping
> without degradation of your final image.
> 
> There are 3 probable cases/generations of an "Old" Leica camera:  The M9,
> and M240, and the M10  ( or variants).  Taking these one at a time,
> 
> If you own an M10, with 24MP of sensor the effective lens factor is 1.32 (
> let's go with 1 1/3 for convenience).  This means that it would have taken
> a lens of 1 1/3 focal length to take the same image output  as if you had
> your old camera.  IOW your your 35 mm lens can crop to the equivalent of a
> 47mm lens on the M10R.  A 50mm lens becomes a 67mm lens, your 90 becomes a
> 120mm , your 135 becomes a 180mm..  And you are not carrying that extra
> lens around....
> 
> If you have a M240, the situation is similar.  24mp sensor.  Same
> advantages.
> 
> If you have an M9 ( like I do) the case is much more clear and