Ken Norton wrote:
> ... While experimenting, I took a photo of the back of my couch. Nothing
> earth-shattering, but interesting non-the-less. The lens was the Zuiko
> 24/2.8.
> The conversion was done in RAW THERAPEE, which gave me some nice options and
> meant I didn't have to go into an editor to accomplish the same tasks.
>
I'm liking RawTherapee a fair amount, too, although for different
reasons. Simply using its defaults, it does a significantly better job
of RAW conversion for the A650 than dcraw does.
> Who says you can't use wide-angle lenses for macro?
>
I give up, who? Perhaps some of he same "Some people" who "think that
weather sealing is highly overrated."? Do you so much enjoy setting up
straw people to knock down? Or are you overly easily bothered by the
maunderings of idiots on forums? (Notice that, by responding to your
maunderings, I imply that I don't consider you an idiot.) :-)
Everybody "should" know that one may take macro images with pretty much
any lens with enough extension. And one generally can get pretty good
central resolution doing so. The difference between macro with any old
lens and those designed for it is in other areas of the resulting image.
A true macro lens is corrected for flat field and common abberations at
much closer focal distances than a 'normal' lens.
As someone once demonstrated here, the 21/3.5 suffers from a great deal
of curvature of field at close focusing distances. Take a macro of the
end of a pencil with it and it looks great, since everything else is out
of DOF and unfocused anyway. Take a picture of a map at much less
magnification, the center is sharp and the rest get fuzzier the further
out you go from center. Take the same map at the same magnificatin with
a 50/3.5 and it's sharp corner to corner.
By shooting with a 4/3 sensor, you ignore much of the outer zones of the
FF coverage lens. A 'fairer' example would be with a 12mm focal length
on a lens designed for 4/3. Nevertheless, it all doesn't matter, as the
shot is at least in part about movement from sharp to unsharp.
It's a rather decent abstract image with interesting color and texture
and the fun of a moment of disorientation until a sense of scale pops
in. I enjoyed it. Slightly edgy bokeh adds an edge to highlights in the
OOF areas that I think it would be better without.
Moose
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