11-28-2012, 02:11 AM
[quote name='Brightcolours' timestamp='1354028714' post='21095']
3 & 4 No idea what you mean? Making things up?
[/quote]
Explanation:
The depth-of-field is dependent on focal length, aperture and focus distance.
In the discussion I referred to the size of the projected disk of a defocused point - thus to the degree of defocusing.
Or in other words: focus spread = steepness of defocusing between the in-focus and defocused object within a scene.
If the disk of a defocused object is big enough there's basically no difference anymore between lenses because the original quality of the bokeh is lost in the sheer amount of (focus) blur.
This is the situation in your sample images #3 and #4. The size of projected disks of your foreground/background objects is simply too extreme to allow any conclusion about the quality of the technical bokeh.
PS: How can you be surprised about the reactions on your posting if you choose a wording like the quoted one above (as someone else noted) ?
3 & 4 No idea what you mean? Making things up?
[/quote]
Explanation:
The depth-of-field is dependent on focal length, aperture and focus distance.
In the discussion I referred to the size of the projected disk of a defocused point - thus to the degree of defocusing.
Or in other words: focus spread = steepness of defocusing between the in-focus and defocused object within a scene.
If the disk of a defocused object is big enough there's basically no difference anymore between lenses because the original quality of the bokeh is lost in the sheer amount of (focus) blur.
This is the situation in your sample images #3 and #4. The size of projected disks of your foreground/background objects is simply too extreme to allow any conclusion about the quality of the technical bokeh.
PS: How can you be surprised about the reactions on your posting if you choose a wording like the quoted one above (as someone else noted) ?