What went wrong

[gsgary]

I have just bought a Raynox pro telephoto converter 1.85x lens that fits onto the end of my prosumer camera, some shots aregood some have a blue edge to them no lens hood fitted and i can fit a polorising filter between camera and lens would this help? any ideas
regards
Garyhttp://gsgary.smugmug.com/photos/23262790-M.jpg

[Harryb]

I have just bought a Raynox pro telephoto converter 1.85x lens that fits onto the end of my prosumer camera, some shots aregood some have a blue edge to them no lens hood fitted and i can fit a polorising filter between camera and lens would this help? any ideas
regards
Gary
Hi Gary,

I had a Raynox TC for my 707 some time ago. I recall that the instructions said that some aperture settings you could get CA. I would look at the exif data for your shots with and without the problem and check the aperture settings of those shots.

[Hawkman]

GAry,

The TC has introduced quite a bit of Chromatic Aberration. Different wavelengths of light are focusing at different places on the sensor, so a polarizing filter will probably not help.

You can stop the lens aperature down further, that should help some.

You can also remove the purple fringing color in post-processing, but you will probably still have an "edge".

A lens hood might help some.

Gene

[gsgary]

Thanks for your help, aperture was set at 3.1, when you say step it down do you mean a higher number ?

Regards
Gary

[Hawkman]

Thanks for your help, aperture was set at 3.1, when you say step it down do you mean a higher number ?

Regards
Gary
Yes
Gene

[gsgary]

Yes
Gene
Thanks Gene:thumb