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- Path: sparky!uunet!paladin.american.edu!gatech!swrinde!sdd.hp.com!hpscit.sc.hp.com!hplextra!cello!jacobson
- From: jacobson@cello.hpl.hp.com (David Jacobson)
- Subject: Re: Sigma 24mm/2.8: Good quality?
- Message-ID: <1993Jan24.003345.4723@cello.hpl.hp.com>
- Date: Sun, 24 Jan 1993 00:33:45 GMT
- References: <EXJTMM.93Jan20155644@ida28.tts.lth.se> <PHR.93Jan20131254@napa.telebit.com> <106063@netnews.upenn.edu>
- Organization: Hewlett-Packard Laboratories
- Lines: 30
-
- There has been a discussion of the Sigma 24mm f/2.8 wide angle lens.
- I have this lens and have been quite pleased with it. I was the one
- who first posted about the curvature of field problem, so let me
- repeat what I discovered. If I focus some very distant object in the
- corner of the viewfinder (not easy to do), the center is focused about
- 6 feet away. However, in practice this has never been a problem,
- first, because in closeups the corners are usually background, which
- is farther away anyway, and secondly because with outdoor pictures I'm
- usually using a small f-stop.
-
- In article <106063@netnews.upenn.edu> liang@saul.cis.upenn.edu (Chuck
- Liang) writes regarding the
-
- > Another point is that, since Nikon AF cameras (with a few exceptions
- >I understand) can still accept manual focus lenses, you can save a lot
- >of money if you buy the manual focus version for Nikon. It doesn't
- >make much sense to me to get an autofocus wide angle lens. The lens
- >is rarely out of focus, and the depth of field scale is usually much
- >more useful anyway.
-
- There are several ways of using wide angle lenses. One is to use them
- to take in sweeping expanses. In this usage I would agree that the
- lens is rarely out of foucus. But another way is to get up close.
- For this, you still need to be careful with focusing. The posting
- implies that the depth of field scale is only available on the manual
- focus model. This is not true: my AF version has a depth of field
- scale. And, as someone else pointed out, the AF version is necessary
- for matrix metering on most Nikon bodies.
-
- -- David Jacobson
-