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Hi Jacquie and Iceman - You guys are spot on, I had a chance to do a quick shot of the crescent moon last night and the image had a green reflection of the crescent.
Also, the lens in question also had a UV filter on the front - as you said Iceman - which I had left there to protect the lens, but is now removed so hopefully the problem will have gone.
The adapter I am using to mount the M42 lens to the EOS body is for lenses with a A/M switch for the aperature, so it DOESNT push the lens aperature pin in, so the aperature is wide open at F4.5 until I get an adapter to suit - but I'm not sure how much of an issue this is as yet.
Hi Mitchell - The shots where non-tracked, just 30 second exposures on a normal camera tripod mainly to test the infinity focus ability of the lenses I have - old/er cheap lenses bought off Ebay - and I use the star trails for an indication of focus as I figured that the trails would be thinnest at best focus.
On lens adapters - I found I had to modify the FD to EFS adapter so it would achieve infinity focus - even though it was claimed it would when I purchased it - the corrective lens in the adapter had a flange at one end that is supposed to stop it in the correction position inside the adapter but I had to cut and file the flange away so I could screw the corrective lens in around 0.5mm to 1mm more than I could with the flange present and then the FD lenses will focus to infinity - even past it depending how far you can screw the corrective lens in before it touches the rear of the FD lens.
As soon as the skies permit I'll be back out to see if the reflections have gone and will post an update.
Thanks Heaps for the help guys,
Regards,
Darren
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