F9-10 is ok for me, over 95% of my shots were below F8 and less than 1% were
above, I only remember I had a few F16 shots with the 80 macro for insects.
F22? Never touch that.
C.H.Ling
----- Original Message -----
From: "Chuck Norcutt"
> But your OM5D II has small pixels too. For diffraction limited shooting
> you'll be limited to about f/9-10.
>
> Chuck Norcutt
>
> C.H.Ling wrote:
>> Thanks for Wayne and Chuck's confirmation, then we may only be able to
>> shoot
>> at F4 with the 7-14 at 7mm :-) I would prefer to use my 16mm fisheye with
>> OM5D II.
>>
>> C.H.Ling
>>
>> ----- Original Message -----
>> From: "Wayne Harridge"
>>
>>>> C.H.Ling <> wrote:
>>>>
>>>> Isn't it the diffraction limit is also related to the lens focal
>>>> length?
>>>> As
>>>> I remember the shorter the lens the faster it reach the diffraction
>>>> limit.
>>>> If you have a long lens, you can stop down more before it reach the
>>>> diffraction limit.
>>>>
>>> Simplistically, the amount of diffraction is related to the "size of the
>>> hole" through which the light passes, so yes a longer lens can be
>>> stopped
>>> down further than a short lens before it has a diffraction "problem". A
>>> 200mm lens at f16 has an effective aperture of 12.5mm, same as a 50mm
>>> lens
>>> at f4.
>>>
>>> ...Wayne
--
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