Re: [OM] IMG: Sunrise, Moonset

[Piers Hemy]

Chuck, I understood Mike to be using 'digital' in the sense of 'binary',
being either in or out of focus. Not related directly to the mode of
capture.

Piers

PS We seem to have covered the issue every five years or so. 2004 & 2009
AFAICT!
On 22 Oct 2014 22:35, "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:

> You seem awfully stubborn on this point that hyperfocal is a digtial
> concept. Here's a quote... and note the date
> ------------------------------------------------------------------------
> When the lens is focused on the hyperfocal distance, the depth of field
> extends from half the hyperfocal distance to infinity.
>
> Photography, Phil Davis, 1972.
> ------------------------------------------------------------------------
>
> The concept goes back way farther than 1972.  That's just the earliest
> record I could find easily.  Apparently Maitani was a true visionary. He
> marked your OM primes with DOF marks to include hyperfocal (if you know how
> to use them).  He was a visionary since he must have predicted that digital
> photography would come along and then this strange digital focusing concept
> he'd created would be useful.
>
> Once you understand what hyperfocal is all about, if you find that using
> standard tables and assumptions doesn't produce suitably sharp work for you
> then tighten up the specs to suit yourself.
>
> Chuck Norcutt
>
>
> On 10/22/2014 12:30 PM, Mike Lazzari wrote:
>
>> Hyperfocal is a digital concept.
>>
> --
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