Sigma 400mm f/5.6 APO Tele Macro is my new best friend.

This is a telephoto Canon EOS prime lens that Sigma discontinued about a decade ago and they languish on eBay for under $250 USD because they often don't allow proper aperture control when mounted on current Canon bodies.   In older bodies, the camera would issue a sync command twice before requesting lens info and since … Continue reading Sigma 400mm f/5.6 APO Tele Macro is my new best friend.

Telephoto Prime Shootout and the OM 500mm f/8 Reflex Lens

This article started life as a comparison of three EOS telephoto prime lenses as economical alternatives to the much vaunted Zuiko 300 mm f/4 IS PRO.  I then realized that this could be a serendipitous opportunity to also reintroduce an even more esoteric telephoto prime that has been lost to history despite being a true … Continue reading Telephoto Prime Shootout and the OM 500mm f/8 Reflex Lens