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tokina 2x conversion lens-advice
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PostPosted: Wed Jan 19, 2011 1:55 am    Post subject: tokina 2x conversion lens-advice Reply with quote

i just received a tokina 2x conversion lens in c mount. the idea was to convert my cosmicar 75/1.4 to a 300/2.8 on my olymous ep2 (2x crop factor). what i didnt count on was the incredible amount of vignetting this converter caused on my lens.

question is, did i get a bad converter, or is the nature of c mount on m4/3 destined to cause severe vignetting regardless of brand?


PostPosted: Wed Jan 19, 2011 6:40 am    Post subject: Reply with quote

Sounds like the TC has reduced the image circle smaller than M43 sensor. I have a Computar EX2C 2X Extender for C-Mount, but no M43 camera to try it Sad

edit:

found this thread, Jaybilizer wonders about my TC and gmoe says c-mount TC don't work on M43.