RedHot wrote in post #3845107
I see Simga floureshing. They make the lenses that Canon won't. e.g 12-24, 18-200 OS, 50-500, 18-125, 50-150 for prices cheaper than what Canon would charge. Granted when you pay for Canon, you typically get a lighter and smaller lens than if Sigma made it. So you pay less to Sigma and have to deal with bigger and heavier lenses instead.
Sigma and Tamron appear to be doing quite well. As you say, they produce lenses that Canon does not. However, except for macros and special focal lengths, they have gutted their primes.
Tokina seems to be dropping their lenses right and left. Yes, they have introduced a few new ones, but overall their line is shrinking rapidly.
Quantaray, a Ritz/Wolf private label, are also dropping lenses like crazy. Ritz/Wolf used to offer Quantaray kits with certain cameras. They no longer do so, and have dropped most lenses that were in competion to Canon's ever-expanding silver-ring series. I suspect that Canon's introduction of IS into silver-ring lenses will do in the remainder.
Vivitar has effectively ceased producing/distributing lenses, though you can find left-over stock in many stores and sites. Why you would want to is a separate issue. The best Vivitar was the 100mm 1:2 macro. Pretty good optics for a cheap lens.
Phoenix (Samyang) have stopped producing many of their traditional lenses, which also killed those same lenses with other badges. The old 500mm four-element "stovepipe" seems to be history, for example, even though it had pretty good optics for such a limited lens. The 500mm mirror is still produced, and will probably stick around for a while, as nobody else makes one except the Eastern Europeans.
Pro-Optic still produces a very few oddbals, most notably a big 1000mm mirror and a 420-800mm MF zoom, essentially a zooming "stovepipe."
Promaster's has dropped its primes, including the 100mm 1:2 macro and the 500mm mirror (both re-badged Vivitars), the only semi-decent lenses of the bunch. None of their zoom lenses are, frankly, worth a damn. All are famous for bad abberations.
There was a market for these lenses, but it seems to have dried up. I only find this strange because there are no counterparts for certain ones of these El Cheapos. The 500mm "stovepipe" and mirror lenses used to fill a specific niche, that of cheap long focal lengths, that is now virtually unaddressed.
Canon, for example, has no 500mm silver-ring lenses of any sort.
I just find the whole thing curious, that's all.