Canon EF 5,6 100-300mm L

This Canon zoom introduced a milestone in Canon's product range. s was the first standard zoom to receive the "L" quality designation. At Canon, the "L" designation stands for the highest level of optical and mechanical quality. It also received the new, quieter and faster focusing drive "ultrasonic motor". In the 90s it was my standard zoom lens on various Canon EOS models, via the EOS 650, 620 to the EOS 600 and finally I screwed it on my EOS1n. I was and still am thrilled with the mechanical quality. It is a piece of glass, metal and high quality plastic. Today, I use the lens when I'm shooting analog (EOS RT / EOS1n) and digital (Sony A7III) at the same time. Even if the lens has its weak point at open aperture - and here especially in the wide-angle range - it is still a lens that I value very much. I am happy to accept this weakness. If I use it for landscape photography at 28-35mm, I stop down to 5.6, for an even better result in the image corners, to f/8 to max. 11. In the telephoto range at 80mm, the corners are also not crisp, but I often use this focal length - as good as possible at f4 - to crop subjects - and the sharpness of the lens in the corners of the image plays a rather subordinate role. Take a look at my sample photos and decide whether the optical performance is sufficient for you. 
For me, this lens still gets a buy recommendation, especially if you are analog and digital on the road.