Viggo said:
privatebydesign said:
Viggo said:
Why are "all" 50 f1.0 L copies from 1991? Checked on ebay and the onbe here in Norway and a few other places, and all of them are "UF". Wasn't it produced up until 2000?
Well it might have been listed as made until 2000 but I think you will find for things like high end lenses they make a production run and stock them, they then turn the production line over to another lens and back again if and when the need arises. This is certainly what they do with the super tele production line and the 50 f1.0 was sold in very small numbers so stock piling them would make sense from a production line point of view.
It makes sense, but both my 300 f2.8 and 200 f2 were produced a month before buying it. And if I bought a 50 1.0 L in 1997 and it was produced in 1991, I would be a bit upset.
Why would you find that upsetting? A lens is not carton of milk. It's an electromechanical device. Properly stored, it will outlast you, your children, and their children. Complaining that it was manufactured six years before you bought it makes no sense, when what matters is that the company that made it has ensured that when it gets sold, it is in impeccable condition.
As I happen to have described elsewhere recently, supertelephoto lenses have a different production process that has to do with the fact that large diameter elements require a lot more individual attention; thus it is actually more likely that they are produced on an as-needed basis than other lenses whose size, complexity, and materials make them more amenable to larger-scale production. For instance, the cost of fluorite crystal and the labor-intensive process of precision polishing them makes the supertelephotos uneconomical to produce in batches, to be sold years down the line. Canon isn't going to make the time, cost, and resources investment to pre-manufacture a thousand EF 800/5.6L IS lenses and let them sit on a shelf to be sold off one at a time over the next decade for this reason.
Bottom line is that it's a peculiar combination of lens design and the expected demand. I would not be surprised, for example, if you buy an MP-E 65mm 1-5x lens from B&H and find the date code was from a few years ago. Not many people are in the market for one, yet its design is easily mass produced in batches and peculiar enough to warrant a moderate production run from time to time.