OK, I'll buy it if you give me the actual dynamic range numbers.
Chuck Norcutt
On 5/1/2012 3:04 PM, Ken Norton wrote:
>> All modern DSLRs have at least the dynamic range of film (including
>> negative films) and most now exceed it.
>
> Um. No.
>
> You did go on to explain the issues of the toe and shoulder, but some
> of the modern negative films don't actually have much of a
> straight-line section, but instead utilize curves to the clip points
> on either end. Several films come to mind that continue to blow the
> best DR of digital away. Ilford XP2 is the class leader in B&W. Kodak
> Ektar 100 and Portra 160NC hold court in color (with the new Portra
> 400 coming in close behind).
>
> Also, when talking about dynamic range, you must specifiy color
> channels or gray scale. The top stop with most digital cameras is
> anything but color stable when you recover the highlights to make them
> useful.
>
> On the other end, the last three stops has a grand total of six
> gradient steps. Not exactly the same as pulling the shadows out of a
> slide or negative where you change the exposure during scanning or
> printing and have the same amount of effective bit depth as you do in
> the high values.
>
> As a result, if you are doing straight capture to print, digital
> capture matches film. When you start doing highlight and shadow
> recovery, I'll give the nod to any of the above mentioned films.
>
> AG
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