What exactly is the advantage of constant aperture in a zoom lens?

Started Jan 20, 2013 | Discussions thread
Shop cameras & lenses ▾
waynes Contributing Member • Posts: 917
Re: What exactly is the advantage of constant aperture in a zoom lens?

rogerstpierre wrote:

To me it's pretty obvious. The longer the FL the more speed you need. Non constant aperture = slower speed when you actually need more speed. Not a good idea.

-- hide signature --

Roger

So true.

If 18-135 had reversed f3.5-5.6, it would be an unbeatable lens!  Not the speed, but the DOF.

Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow