Originally Posted by
rdenney
Not my point (though the 210 isn't even that long relative to the format--it's more like a 60). The 210 is the standard "longer" lens for 4x5 use (probably because so many were available, given that they are normal lenses for 5x7). The 135 was the standard accessory long lens for small format. Thus, both were have been produced in quantity relative to their markets, and offered at relatively low price points. Also, both are long enough to be "long", but not long enough to require a telephoto design. That has the double-pronged benefit of not requiring much coverage and not including elements that magnify faults.
Most people add a 210 to their 4x5 collection using the same basic motivations as people adding a 135mm lens to their 35mm collection.
The equivalent focal length to a 135 would be something like a 450, which is rare and expensive for 4x5 use, and which commonly requires a telephoto design to work on a 4x5 camera. 4x5 users think hard before buying one, and in that format it's a specialty lens, not the default long lens.
(I should add that the only reason there are sucky 85's is because they push the limits in terms of speed. Most cheapie 135's are f/2.8-f/4 lenses, just as most 210's start at f/5.6 or smaller. There are probably no bad 85/2.8's, but most 85's are f/2 or faster, and are considered more of a specialty portrait lens than an accessory telephoto.)
Rick "thinking in market terms" Denney
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