i tend to agree with you when in a teaching mode - it is much easier to 
understand how an aperture works by taking off the lens and looking through it 
while rotating the aperture ring.  And in some styles of shooting, using the 
ring can be real handy.  I shot that way for many years way back in the screw 
mount days coming forward.  But once you get the concept, whether you twist a 
ring or spin a dial, doesn't really make much difference.  I think it has more 
to do with what is easiest and quickest to use.  Sometimes that is related to 
the equipment itself.  A large lens that your left hand is already supporting 
is naturally right about where the aperture ring would be - kind of a no 
brainer to use it there.  But a small lens, can be a real pain to squeeze your 
hand in there to move the ring.  I have also worked with a few lenses where the 
ring was getting clunky to move - probably breaking down inside - then it is 
not very good.  Also the speed of shooting can make a difference - whe
 n I shot weddings sometimes things moved along pretty quickly and you wouldn't 
want to be slowed down - the dials were quicker.  But when shooting scenics or 
something that requires much thoughtfulness sometimes the forced aperture ring 
can make you a bit more careful. 

I guess in the end, if you are a seasoned photographer you can work with 
anything and you will gravitate towards equipment that works most easily in the 
environment that you prefer to shoot in.

I do prefer to see the aperture value lit up in the display rather than the 
little window of the old film cameras - in low light they were not very easy to 
see.  It is also nice in the exif data to see what the aperture shot at is.  
Use the aperture ring and that data is not captured.

Some ramblings, but I can see merit in both sides of the argument.

--
Bruce


Sent from my iPad

> On Sep 18, 2014, at 12:39 PM, P.J. Alling <[email protected]> wrote:
> 
> If one had a working aperture ring, one could set up the camera in manual 
> mode to have three dedicated controls a wheel for shutter, a wheel for ISO, 
> and the aperture ring for well you know.  Maybe you don't shoot in manual 
> exposure mode as much as I do.
> 
> I've also have an easier time explaining the relationship between those three 
> exposure parameters and what they do if lenses actually had aperture rings.
> 
> I know that back in the film era, a couple of new Canon owners had a hard 
> time with the concepts when I tried to explain using their Rebels as examples 
> but they got it right away when I hauled out my LX.
> 
> -- 
> I don't want to achieve immortality through my work; I want to achieve 
> immortality through not dying.
> -- Woody Allen
> 
> 
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