On Mon, 22 Jun 1998, R. Lee Hawkins wrote:
|In your message dated: Mon, 22 Jun 1998 00:03:21 EDT you write:
|>Another nice wish lens. Hmmm... I suspect the Zuiko
|>wizards can produce a 35/1.4 with a 55mm filter size. A
|>35/1.2 may require a 62mm or 72mm one.
|
|Nope, not if you can make a 50mm/1.2 w/55mm filter. It's simple physics
|(at least at that focal length). 35/1.2 = 29mm and some change, say
|30mm, which leaves you with 10mm on each side for mounting. Easily
|doable.
The more extreme retrofocus design of a 35/1.2 may
necessitate a larger filter size. For example, the Zuiko
21/2 requires a 55mm filter (rather than 21/2 = 10.5mm) even
though most manufacturers' 20/2.8's require 72mm filters.
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