Archived posting to the Leica Users Group, 2012/03/15

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Subject: [Leica] S2 vs. 645D sensor
From: john at chiaroscuro.co.nz (John McMaster)
Date: Fri, 16 Mar 2012 17:52:10 +1300
References: <CAF8hL-FgDxr2rLsVNhfRpHULJwdjP9pfTF83m4D9kRUhzO4v9w@mail.gmail.com> <CAE3QcF7QnuCE=BLDs_+QJUzVfcJW443zMKEe3UVUqQycnrdXUA@mail.gmail.com> <CAF8hL-E4V3KzDLceBve5i7WNnbbLzv4wgh=LMnfj-NutsRDDRQ@mail.gmail.com>

After this came up last time I think I changed my mind and now think it is
the same overall chip in both as the S2 is not solely for it unlike the M9.
Not heard of microlenses in the S2, it has a far larger register distance
than M, and wonder how much difference firmware makes to a CCD performance?

john

-----Original Message-----

Yes, the difference in dimensions have been noted, as I said. They can still
be the "same" sensor. Not like it's rocket science to arrange pixels from
30x45 to 33x44 :-) The more interesting question is whether S2 has microlens
etc. that would make it better even using the same generation of technology.

On Thu, Mar 15, 2012 at 9:13 PM, Geoff Hopkinson
<hopsternew at gmail.com>wrote:

> Huh?
>
> The S2 sensor is 30x45mm and 37.5mp
> The Pentax 645D sensor is 33x44mm and 40mp Same pixel pitch I think 
> FWIW Maybe the extra 3mm are sawed off and the bits glued on to make 
> up the width ;-)  Cheers, Geoff http://www.pbase.com/hoppyman
>
>
>
> On 16 March 2012 07:52, Richard Man <richard at richardmanphoto.com> wrote:
>
> > Someone wrote a review of the S2 and claims that it and the Pentax 
> > 645D share the same sensor. Being smarter than I was when I made 
> > similar
> comment
> > here, I mentioned that the sensors are different dimensions and I 
> > asked
> are
> > there real evidence that they are the same sensor or at least share 
> > the same technology. Here's the reply:
> >
> > ***
> > Kodak removed the specs of the sensor when the S2 was released so
> customers
> > could not get the information, but supposedly the sensors in the two 
> > cameras are from the same generation and share the same technology. 
> > It is definitely a Kodak sensor--KAF 37500.
> >
> > http://www.kodak.com/ek/US/en/Image_...hotography.htm<
> >
> http://www.kodak.com/ek/US/en/Image_Sensor_Solutions/KODAK_CCD_Image_S
> ensors_Power_New_Cameras_for_Professional_Photography.htm
> > >
> > &&&&
> >
> > Does anyone know if the S2 has microlens ala M9 or is that deemed 
> > not necessary?
> >
> > Thread here:
> >
> >
> http://forum.getdpi.com/forum/medium-format-systems-digital-backs/3551
> 1-multi-part-leica-s2-review.html
> >




Replies: Reply from richard at richardmanphoto.com (Richard Man) ([Leica] S2 vs. 645D sensor)
In reply to: Message from richard at richardmanphoto.com (Richard Man) ([Leica] S2 vs. 645D sensor)
Message from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] S2 vs. 645D sensor)
Message from richard at richardmanphoto.com (Richard Man) ([Leica] S2 vs. 645D sensor)