Whatever is required such that you can measure rather than make
subjective judgments. Subjective judgments are fine for your own
artistic purposes but do nothing to dispute the math.
Chuck Norcutt
On 1/22/2013 6:12 PM, Andrew Fildes wrote:
> I don't tend to take a lot of pix at 1.5mm.
> Did you mean 'real' pictures, or 'test' pictures?
> There's a difference - when I took real pictures, my experience was that the
> DOF was a lot thinner than that.
> Or am I talking about real focus, rather than apparent focus?
> Andrew Fildes
> afildes@xxxxxxxxxxxxx
> www.soultheft.com
> Author/Publisher: The SLR Compendium - http://www.blurb.com/books/3732813
>
>
>
> On 23/01/2013, at 9:59 AM, Chuck Norcutt wrote:
>
>> Skip the focusing judgement and take some real pictures. Both lenses
>> when focused at 1.5 meters will have equal depth of field of about 55mm
>> ahead of the focal point and 60mm behind it. (assuming conventional CoC
>> values).
>
--
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