Ok for fun I wanted to compare my Orion 15 to the TTA 28mm f6, so I took some very similar shots with my Orion 15 28mm f6 lens. This time I did not add a border as I wanted to show the full vignette at F6! All shots at f6.
This lens is at infinity at the hard stop, which is very nice and perhaps a little surprising given that it uses an LTM-M adapter (Fotodiox). While the TTA 28 5.6 smears at the edges at 5.6, the Orion gets hazy. Interesting..
But no weird color casts, which is nice as this is a lens obviously built way before digital photography was even a consideration.
This lens is made of some type of alloy, and is super light weight, about half of the weight of the brass TTA. Honestly for all the brass fetish thing happening - of which I too am guilty - it is much more pleasant using a lighter lens! Focus is super smooth and perfectly weighted. Changing aperture is a right royal pain in the keester.
