K3 blur and epiphany

Started 3 months ago | Discussions thread
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awaldram
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K3 blur and epiphany
3 months ago

This is not about k3 'issues' but about observations

I notice with my k3 that DoF feels generally shorter and wondered why .... Then it struck me .

DoF is really a misnomer rather it is area of acceptable focus at set viewing distance .

Peak sharpness doesn't really alter with aperture just the blur fall off.

Now if you take these statements and apply then to pixel density you can see every increase in density will give a peakier blur factor and a tendency to 'view closer' increasing perceived blur.

Take the two factors together and I see why the k3 seems to have such shallow DoF compared to earlier models.

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Pentax Q Pentax K-3 Pentax smc DA* 55mm F1.4 SDM Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM Pentax smc DA* 50-135mm F2.8 ED (IF) SDM +11 more
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