[astroboy]

Up for sale a well used Canon 300mm F4 L IS lens , the paint work has some marks but the optics are clean and free of scratches , fungus etc.
the only issue the lens has is the auto focusing is out a bit so if you have a 5D mark II you can calibrate the camera to compensate , I think 50Ds etc can do that as well but check your cameras instuctions.

Comes with caps Bahtinov mask and F5 mask to give pinpoint stars ( with out diffraction spikes ) across the chip of a 5D mark II but won't be needed with smaller chips .
Makes a great astrograph as well as wild life lens.
$700 posted

Thanks
Zane