kurotama
Established
A few years ago, I loaned a later model 35/2 for a few month and bought earlier model not knowing the difference... earlier model has "Canon Camera Co. Inc." and lens number written in smaller characters at the front of the lens.
I don't have any good samples to show differences of the two lenses, but my copy of the later version showed a far more vivid and rich color rendering than the earlier model, which has more vignetting, less saturation and murky blueish color shift that become apparent in shots taken in shadows. The later model has much smoother Bokeh than older model too.
The later model is in demand here in Japan and is very hard to find one at a reasonable price. One of the Japanese blogs described the difference as Canon improved its optics and coatings to better render the color as color negatives are becoming popular back in those days.
I don't have any good samples to show differences of the two lenses, but my copy of the later version showed a far more vivid and rich color rendering than the earlier model, which has more vignetting, less saturation and murky blueish color shift that become apparent in shots taken in shadows. The later model has much smoother Bokeh than older model too.
The later model is in demand here in Japan and is very hard to find one at a reasonable price. One of the Japanese blogs described the difference as Canon improved its optics and coatings to better render the color as color negatives are becoming popular back in those days.