Just pulled the trigger on M6II + 32 f1.4

Started 5 months ago | Discussions thread
OP MAC Forum Pro • Posts: 16,449
Re: Just pulled the trigger on M6II + 32 f1.4
1

nnowak wrote:

MAC wrote:

MAC wrote:

EDWARD ARTISTE wrote:

Just got a replacement m6mkii, keeping my fingers crossed. I encourage you to test the hell out of it.

ok, I'll keep testing during the return period

getting my bearings:

The camera generates HUGE files -- files close to 16x24 inch prints

The DLA (Diffraction Limited Aperture) for this camera is just F5.2 - but I will use up to F8 when I need dof

I really dislike that term. The word "limit" implies a hard boundary where everything falls apart once crossed. Diffraction Visible Aperture would be far more appropriate.

agree

Diffraction is an optical phenomenon that occurs with every lens at every aperture. The only thing that changes as sensors increase in pixel density is the ability to record that diffraction. Even wide open, your 32mm f/1.4 has diffraction, but your M6 II lacks the resolution to record it.

Also, when Angle of View (AoV) and Depth of Field (DoF) are identical, diffraction levels will be the same across sensor sizes. For example, shooting with your 32mm at f8 on your M6 II will produce the same levels of diffraction as shooting with a 50mm lens at f13 on your RP.

I think I understand the 1.6 crop factor multiple (32 x1.6 = 51)

and 8 x 1.6 = 13

but isn't it also multivariable depending on the sensor; i.e., the m6II has a DLA of 5.2 and the RP has a DLA of 9.3

if you take 5.2 x 1.6 = you get 8.3 which would be the FF DLA if it had an analogous same generation sensor as the M6II. But in this case, doesn't the RP have a less stressful DLA of 9.3...

So I'm thinking the RP at F13 would not be equivalent but be under less diffraction stress than the m6II at F8. Maybe I got this wrong.

But in any case, one needs to think about stopping down - analogous to squinting ones eyes, and how one will see less sharpness when you squint too much...

 MAC's gear list:MAC's gear list
Canon EOS 6D Canon EOS 7D Mark II Canon EOS RP Canon EOS M6 II Canon EF 70-200mm f/2.8L USM +9 more
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