diffraction

start he
http://www.luminous-landscape.com/tu...fraction.shtml

"egbert_no_bacon" wrote in message
...
On Dec 22, 1:11 am, "Charles" wrote:
start
hehttp://www.luminous-landscape.com/tu...ng-series/u-di...

i would have said 'soft' after f8

so 'looking soft and lacking' is diffraction

Yes, diffraction limiting can cause loss of sharpness. The general rule is
that f/8 is the limit (for many lens/camera combos) when TACK sharpness is
needed and f/11 is the limit for VERY GOOD sharpness. Sharpness is not
always the limiting factor. A lens at f/16 or f/22 gives a nice depth of
field which can be more important. There are only general rules in
photography, because there are so many applications.

Camera shake and subject motion are often more important as limiting
factors.

egbert_no_bacon wrote:
On Dec 22, 1:11 am, "Charles" wrote:
start hehttp://www.luminous-landscape.com/tu...ng-series/u-di...

i would have said 'soft' after f8

so 'looking soft and lacking' is diffraction


And so are many other things.

BugBear

egbert_no_bacon wrote:

On Dec 22, 1:11Â*am, "Charles" wrote:
start

hehttp://www.luminous-landscape.com/tu...ng-series/u-di...

i would have said 'soft' after f8

so 'looking soft and lacking' is diffraction

Another detailed tutorial article, with on-line calculator:

http://www.cambridgeincolour.com/tut...hotography.htm