Archived posting to the Leica Users Group, 2015/03/10

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] M8 RAW--high ISO improvement!
From: kcarney1 at cox.net (Ken Carney)
Date: Tue, 10 Mar 2015 15:30:18 -0500
References: <54FE9840.9010802@threshinc.com> <85026E4F-1BE8-4193-9771-E566B70EDC7B@frozenlight.eu> <1wNM1q00U07g8Sg01wNNpg>

Thanks, I see the issue now.

Ken

On 3/10/2015 3:22 PM, Peter Klein wrote:
> Ken, the uncompressed files were just too big for the M8 electronics to
> handle at any reasonable speed. Reviewers and many users would have
> screamed bloody murder. Leica found that when they compressed the M8 files
> using a square root algorithm, they "couldn't tell the difference" between
> the uncompressed and compressed files.
>
> That was true at low ISO, for files that didn't require much stretching or
> pushing of the dark tones. But as we know, things fall apart above ISO
> 640.  The M8 met Leica's initial goal of getting a digital M into the
> marketplace as a "Kodachrome camera" ? one that could utilize most of the
> Leica lenses' image quality, as long as the light was a reasonably good. So
> we ended up with 10 MB compressed files as our only choice. That didn't
> help those of us who regarded the Leica as an available light camera.
>
> IIRC, M9 users have a choice of compressed or uncompressed DNGs, so they
> can get the same advantages without having to mess with extra software.
>
> Nathan's observation tells us exactly why Leica made the decision to go
> with compressed DNGs for the M8. But since I don't have an M240 or MM
> (yet?),  the M8 uncompressed RAW files give me a way to shoot in darker
> dark with what I have now.
>
> --Peter
>
> On Tuesday, March 10, 2015, Nathan Wajsman <photo at frozenlight.eu> wrote:
>
>> Interesting indeed but what you write below is a deal breaker for me.
>>
>> Cheers,
>> Nathan
>>
>>
>>> On 10 Mar 2015, at 08:07, Peter Klein <pklein at threshinc.com
>> <javascript:;>> wrote:
>>> The disadvantages are that the files take almost forever to write to the
>> SD card. You can only take a couple of shots before the buffer fills up.
>>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



In reply to: Message from pklein at threshinc.com (Peter Klein) ([Leica] M8 RAW--high ISO improvement!)
Message from photo at frozenlight.eu (Nathan Wajsman) ([Leica] M8 RAW--high ISO improvement!)