EFS 17-55mm Full Frame equivalent?

Started Jul 15, 2012 | Discussions thread
Brian Lund
Regular MemberPosts: 476
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Re: EFS 17-55mm Full Frame equivalent?
In reply to Whopinator, Jul 15, 2012

Whopinator wrote:

Right now I have a 600D, everyone raves on about the 17-85 being the best EFS Lens. The price point is about $1000, I know one day I may upgrade to a Full Frame Canon camera so I don't know how wise it is to invest into this option, is there a EF Lens that is equally as awesome as the 17-55? This way when I decide to upgrade I won't be with a useless lens I'd have to sell like the 18--55 lens and 55-250 I already have.

I figure f/2.8 on crop and f/4 on FF will give approximately the same DOF:

Since depth of field will be shallower on full-frame a 24-105 f/4L IS could be a suitable substitute! It's a very sharp lens, has IS like the 17-55 and even has a better zoom range!

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