Good catch, Piers. I’m afraid that I merely skimmed that part; it’s a thin
excuse, I know, but it’s all I have . . .
Chris
> On 22 Sep 2015, at 16:31, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>
> And he is probably relating f/16 vs. f/11 to increased exposure time and
> therefore diffraction must be caused by longer exposure. :-)
> Some day he'll be corrected.
>
> Chuck Norcutt
>
>
> On 9/21/2015 2:09 PM, Moose wrote:
>> On 9/20/2015 11:39 PM, Wayne Harridge wrote:
>>> I came across this strange misconception about exposure time and
>>> diffraction:
>>>
>>> " I try to stick with an aperture of around f8 and
>>> not go higher than f11, meaning I try to keep
>>> the aperture close to the sweet spot of my lens,
>>> so I can capture the clearest and sharpest image
>>> I can capture. This is important in long exposure
>>> since the longer the exposure the more the RAW
>>> file will be exposed to diffraction (which happens
>>> at apertures of f16 or more) a phenomenon
>>> that deteriorates the clarity of the images."
>>
>> It's because the writer doesn't know what diffraction is, only that it's
>> a bad thing.
>>
>> Diffracted Moose
>>
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