GSN Electro wide and tele advice?

[fraley]

I just received a set of wide angle and telephoto lens attachments for the Yashica GSN Electro. They are big chunks of glass! Any advice on using them? I see the focus scale is printed on each one, to compensate. But how about exposure? Should I be rating my film slightly slower than it is? Are these really boat anchors posing as lenses?

 

[JonR]

Here is a discussion you may want to read incl some test shots I made...
/jon

http://www.rangefinderforum.com/forums/showthread.php?t=40927

 

[Pherdinand]

yes i think they are boat anchors
but maybe you get a good surprise!

 

[FallisPhoto]

As for the wide angle lens, don't bother. The telephoto is okay, but I think it is more trouble to use it than it's worth.

 

[John Robertson]

Have fun but don't expect great definition!!!

 

[titrisol]

They are not fun to use in the Yashica, but the wideangle is quite cool as SLR lens-attachemnt (I have used it in a Nikon micro 55/2.8)
The tele is OK also but doesnt have the vignetting or the weirdenss feeling