Anthony Lee
Senior Member
The spherical aberration reference was about the "glow" thing mentioned earlier in the thread. The photo is cropped at about 45% and IIRC, I was probably around 10 meters from the bulbul. 100% magnification is much more detailed, but too large to post here. Both the 100 and 180 are amazing--consistent contrast and sharpness across the frame from f/2.8 to f/11.
Hope I can afford one of these sometime soon. I was refering to CA which I see most of the time in all my bird photos when I used my cheapo lenses.