Originally Posted by Daniel Browning
So the 60D's DLA is f/6.8. Correct me if I'm wrong but I thought that meant that 6.8 was the narrowest you could go without incurring a DLA "penalty" - anything tighter than 6.8 you'd see image (pixel-level) degradation. But you say "only 6.8 and faster are completely camera-limited."
I can't pretend I understand the phenomenon completely; have I misunderstood your post?
When Bryan and others include a DLA spec in their reviews, aren't they saying (basically), "Here's the narrowest f/stop you can shoot at without seeing the effects of diffraction"?
Thanks Daniel!