William Belvin

William Belvin

Lives in United States Great Neck, United States
Works as a Actuary
Has a website at www.thewave.info
Joined on Mar 16, 2000

Comments

Total: 2, showing: 1 – 2
On Just posted: Nikon D800 test samples article (440 comments in total)
In reply to:

William Belvin: Good to see these , but they're not great for comparing resolutions. They were shot at f/11, and are badly affected by diffraction. Nikon recommends shooting at f/8 or lower for best results. I'd suggest f/5.6 would be a better test. Incidentally the 645D is shot at f/18 and is also affected by diffraction, even with its large sensor.

Lenses are designed so that everything in a plane is in focus simultaneously. If the center of the image is in focus and the subject is exactly perpendicular to the sensor then the entire image will be in focus. There is no DOF issue here whatever the aperture.

Direct link | Posted on Mar 20, 2012 at 09:10 UTC
On Just posted: Nikon D800 test samples article (440 comments in total)

Good to see these , but they're not great for comparing resolutions. They were shot at f/11, and are badly affected by diffraction. Nikon recommends shooting at f/8 or lower for best results. I'd suggest f/5.6 would be a better test. Incidentally the 645D is shot at f/18 and is also affected by diffraction, even with its large sensor.

Direct link | Posted on Mar 20, 2012 at 05:59 UTC as 106th comment | 6 replies
Total: 2, showing: 1 – 2