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01-27-2008, 05:15 AM   #1
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Wide angle converters

Dear forum,

I've got an FA 50mm f1.4 lens, sometimes I wished it to have a wider angle.
Having wished for less focal length is something that has happened to me rather often over the years, and I guess I'm not the only one.
So, why is it that we don't find K mount wide angle converters around? You know, a teleconverter with a focus multiplication less than 1.
I would certainly like to have a 0.7 or 0.5 wide angle converter in my bag.

I've found filter screw on type converters on the Internet. That kind of screw on converters are quite popular with P&S cameras.
However, I guess it should be possible to make a K mount ring type converters as well.

Therefore I have 2 questions:

1. Does anybody have experience with the screw-on type converters? For instance the Marumi 49mm?
2. Does anybody know of a K mount converter < 1.0x existing, with AF functionality?

Any example pictures available?

- Bert

01-27-2008, 05:55 AM   #2
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Lowell Goudge's Avatar

Join Date: Jan 2007
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wide angle converters have been around for 30+ years, but they are not rear mounted copnerters. They mount in front of th elens.

I have one 0.45X for my P&S

converts it from 38-380mm to 17-170mm.

I have tried it as a joke on my DSLR, and it can do some things, but lots of distortion.

Note these really are intended for focal lengths in the 20-35mm range, and good ones can be huge, because they have to have a much larger field of fiew than the origonal lens
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