The lens I use almost all the time since I got it -- a Sigma Macro Apo 
Super 70-300 has no aperture ring and I didn't notice until I read this 
post. I use it in aperture priority, set to macro, for about 80% of the 
pictures I've been taking this summer. The other two I use most are a 
Sigma 50/2.8 Macro EX Manual Focus* (sometimes with a Tokina Doubler) 
and a Tokina 28-70 AF. The other nine lenses are sitting in the cupboard 
unused. I didn't say gathering dust because they aren't.

* A great lens!

Don W

John Francis wrote:
> On Fri, Aug 18, 2006 at 10:00:13AM -0700, Godfrey DiGiorgi wrote:
>> On Aug 18, 2006, at 8:08 AM, Brendan MacRae wrote:
>>
>>> .. I won't buy a lens without a f-stop ring since I shoot a great
>>> deal in Aperture Priority. I just don't want a plastic
>>> lens that's going to break the first time it's used. ..
>> A lens without an aperture ring is less likely to break no matter  
>> what you choose to do with it: it has fewer parts to break.
>>
>> If you shoot in aperture priority much of the time with any of the  
>> DSLR bodies, an A setting and an aperture ring do exactly the same  
>> thing: you set the aperture with the body.
> 
> If, however, you use an MZ-S (which is, IIRC, the body mentioned
> earlier on in this thread) a lens without an aperture ring isn't
> an ideal match.
> 
> 


-- 
Dr E D F Williams
www.kolumbus.fi/mimosa/
http://personal.inet.fi/cool/don.williams/
41660 TOIVAKKA – Finland - +358400706616

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