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Re: [OM] Auto Bellows on digital bodies

Subject: Re: [OM] Auto Bellows on digital bodies
From: "Piers Hemy" <piers@xxxxxxxx>
Date: Mon, 2 Nov 2009 10:28:55 -0000
Very nice job, Alan - I would quibble only with the term "click-stop
mechanism", because the diaphragm on the 20/3.5 has no clicks as best I
recall.

-- 
Piers  

-----Original Message-----
From: Alan Wood [mailto:alanmwood@xxxxxxxxxxx] 
Sent: 02 November 2009 06:42
To: Olympus Camera Discussion
Subject: Re: [OM] Auto Bellows on digital bodies

Thank you all for the suggestions.

The first set of 4 tables is now live in the "Going digital" section of this
page:

http://www.alanwood.net/photography/olympus/macro-lens-20-35.html

I have included model designations, sensor sizes and extension, which should
keep most people happy.

--
Alan Wood
http://www.alanwood.net (Unicode, special characters, pesticide names)



----- Original Message ----
> From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Sun, 1 November, 2009 8:23:28
> Subject: Re: [OM] Auto Bellows on digital bodies
> 
> OK, now I see the point if the intent is to produce magnification 
> tables.  But the info of extension required by body is still valuable.
> 
> Chuck Norcutt
> 
> Moose wrote:
> > Chuck Norcutt wrote:
> >> Eh?  How does that help?  Both the E-1 and E-500 have the same sensor
size 
> but the E-1 (unlike the E-500) doesn't have a built-in flash protrusion
and 
> doesn't need an extension tube.  Or have I missed your meaning entirely?
> >>  
> > 
> > Yes, you have. What I mean is that labeling a table "E-500, E-510 with 
> > 7mm" will lead to inevitable questions from those with E-520, 620 and 
> > future models.
> > 
> > I would instead label the table "4/3 sensor with 7mm extension tube". 
> > Anyone with camera, adapter, tube(s) and bellows in hand will obviously 
> > know which tube they needed to mount the bellows.
> > 
> > So the tables become:
> > 4/3 sensor with 7mm extension tube (13.5x18mm)
> > 4/3 sensor without extension tube (13.5x18mm)
> > APS-C sensor with 14mm extension tube (22.2 x 14.8 mm*)
> > Full Frame film or sensor with 7mm Extension tube (24x36mm)
> > 
> > * Individual models vary slightly.
> > -----------------
> > If desired, a second table could document models and tube needed for
each.
> > 
> > Note that Alan wrote "It looks as though I need 4 new tables for each 
> > macro lens:" With camera models noted in the table titles, adding new 
> > models could be quite a chore for all those individual tables.
> > 
> > Moose



      

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