Sigma launches new ART versions of their 30mm and 19mm f2.8 and new 60mm f2.8 lenses

Started 4 months ago | Discussion thread
RGBaker
Regular MemberPosts: 292
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Re: Sigma launches new ART versions of their 30mm and 19mm f2.8 and new 60mm f2.8 lenses
In reply to sean lancaster, 4 months ago

sean lancaster wrote:

RGBaker wrote:

A couple of points:

DOF with a 60mm lens at f2.8 at a nominal six foot distance (a nice portrait shot, not unlike a typical 85mm FF) is about seven inches ... just about perfectly deep enough for a face. Open up to 1.8 on a 50mm lens, move in a foot to get the same framing and suddenly your DOF slips to under four inches -- suddenly the tip of the nose is out of focus ...

My post only referred to the 30/2.8 when I said I don't have a need for a 2.8 prime. Sorry if I mislead you into thinking that the 60/2.8 is worthless. But I really don't anticipate shooting that focal length, so even a 60/1.4 wouldn't really appeal to me if something like that existed. I have the SEL 50/1.8 and I do use it, but less than 5% of my shooting. I don't need a 50/1.8 and a 60/2.8. But I am happy to see that some folks will find it to be a good lens for their practice.

Apologies, I was really referring to those comparing the 50mm f1.8 with the 60mm f2.8 -- I was just sloppy on hitting the 'reply' button to your comment on the 30mm.
Cheers,
GB

--
http://www.flickr.com/photos/geoffbaker/sets/72157632181672263/detail/

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