[OM] Re: Bellows

[Chuck Norcutt]

A dual cable release would only be of value to you if the lens is on an 
OM body.  One leg of the cable will release the OM's shutter and the 
other will close down the lens to shooting aperture.  It's not of much 
use though with an OM lens and bellows on an E-330.  With that sort of 
rig everything will be manual.

Reversing the lens may be desirable when the distance to the subject is 
less than the distance to the sensor.  It has to do with the way lenses 
are designed which expects the object distance from the front of the 
lens to be greater than the image distance behind the lens.  In close-up 
photography these normal object/image distance relationships may get 
reversed... ergo reverse the lens to compensate unless it's a special 
macro lens to begin with.

If you get serious about this stuff this is a book you should own:
<http://www.amazon.com/John-Shaws-Closeups-Nature-Shaw/dp/0817440526/ref=pd_bbs_sr_1/103-3192476-2323027?ie=UTF8&s=books&qid=1173145846&sr=8-1>
Shaw uses Nikon gear but the principles are the same and the gear is 
similar.

Chuck Norcutt

NSURIT@xxxxxxx wrote:
>  
  Without doing all your
> homework for you, I would say the Olympus unit allows you to use a dual  
> cable 
> release and also to reverse your lens on the bellows.  

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