Relation between dust and aperture setting

Started Mar 30, 2014 | Questions thread
michaeladawson Forum Pro • Posts: 11,482
Re: Relation between dust and aperture setting

soloryb wrote:

What you are experiencing is exactly why Nikon recommends that you keep the aperture below f/16 for the D800. That dust is there - whether or not it is observable at the wider apertures. As far as I know, this dust becomes more visible due to the increased diffraction occurring at f/16 and above. Lower resolution sensors don't show this but a 36-MP sensor will.

Diffraction?  No.  You will see dust spots on a 6 MP camera and a 36 MP camera just as easily.  For small apertures the incoming light is coming almost all perpendicular from a small opening.  Wide apertures and the light is coming from all angles.

Similar to what someone else said...  stand a person near a wall. Shine a flashlight at them, look at the well defined shadow on the wall.  Now use a big wide light source if you can find one.  The wider the light source the less distinct the shadow becomes.

-- hide signature --

Mike Dawson

 michaeladawson's gear list:michaeladawson's gear list
Panasonic Lumix DMC-LX3 Nikon D200 Nikon D4 Nikon D800 Nikon D800E +23 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow