Agreed somewhat on second point, the aperture blades only factor in when you're using them. Some lenses don't have smooth/nice bokeh even when wide open.
Yes thatīs true. The aperture geometry is just responsible for the highlight discs but it has nothing to do with the overall quality of the bokeh.Quote:
Some lenses don't have smooth/nice bokeh even when wide open.
And even if you have a lens with pentagonal or hexagonal aperture shape you can easily avoid showing it by choosing an uniform background without any backlight sources, e.g. the sky or a distant wall. But if you shoot against a tree with the sun gleaming trough all its branches, you will have dozens of them in the bokeh.
From my understanding, the definition of Bokeh is the bright out of focus areas of the background which would be controlled by lens aperture.
Hi, You could always mount a pre war lens from a Folder camera on a bellows with an adaptor on your Canon. The lenses are pretty cheap and you could do a lot of experimenting with bokeh and dof. Good Luck, Henk.
This is most obvious with panoramic formats. My 645, in full format of 42X56 gives a very different "look" than with the 35mm pano back with the same lens. The image with the pano back can even give the appearance of being a wide shot with the 75mm lens, a "short telephoto" length on the 135 format and "normal" on the 645.