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[OM] Performance of the Vivitar MFTC and 50/1.4, was: Zooms at Dawn - t

Subject: [OM] Performance of the Vivitar MFTC and 50/1.4, was: Zooms at Dawn - the 50mm shootout - Teaser
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Wed, 21 Apr 2010 20:17:53 -0400
Today I moved the crabapple blossoms indoors out of the wind.  Using the 
Canon 5D I shot a bunch of photos using the Vivitar Macro Focusing 
Teleconverter at 1:5, 1:3, 1:2 and 1:1 with the OM Zuiko 50/1.4, Zuiko 
50/1.8 and Zuiko macro 50/3.5.  I shot the full range of apertures on 
the 50/1.4 but only used f/8 on the other two for comparisons.

The bottom line is that there isn't a hill of beans between the 3 lenses 
(at least at f/8).  I didn't compare beyond f/8 due to diffraction. 
There's little difference to be seen on the f/1.4 shots at f/11 and f/16 
vs. f/8.  I think diffraction is taking away any increase in DOF.

This is what they look like.  Pardon the creases in the "sky".  It's a 
blue shirt that wasn't large enough to get further away for better 
blurring.  I'm tempted to clean up the "sky" in PhotoShop but, nah, 
never mind.
<http://www.chucknorcutt.com/Crabapple_blossoms_Vivitar_MFTC/>

Any differences between these lenses is more than totally swamped by my 
errors in refocusing after changing lenses.  I should have added a large 
crop of the 1:1 image.  There's much more detail showing there than I 
ever saw with my eye.

Chuck Norcutt


Ken Norton wrote:
>> I have a Vivitar 2X macro converter that I've never used.  I discovered
>> it on the bay about a year or two ago quite by accident and it was going
>> for a low price.  I guess I should give it a try... if I can focus it.
>>
> 
> 
> Could you put it on the 5D and shoot some samples for us?
> 
> AG
-- 
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