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[OM] Re: IMG: Abstract crow with 135/3.5

Subject: [OM] Re: IMG: Abstract crow with 135/3.5
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
Date: Wed, 3 Sep 2008 12:47:44 -0500
Piers,

Since I needed an adapter for M42 to 4/3, I bought a Fotodiox adapter and 
one of the Chinese focus confirmation chips.  After two tries at aligning 
and mounting the chip in the adapter, it works "most" of the time.  The 
alignment requirements seem to be quite stringent.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Piers Hemy" <piers@xxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Wednesday, September 03, 2008 12:35 PM
Subject: [OM] Re: IMG: Abstract crow with 135/3.5


>
> Why from a Russian "Dandelion" store, where else?  But I wouldn't want to
> try dandelion wine, lest it retains the anecdotal diuretic qualities of 
> the
> raw material.
>
> Google "dandelion olympus" and you will get a few hits.  The dpreview 
> thread
> refers to Lushnikov's dandelions, which I believe were the first to 
> market.
> The oly43club.ru link is for a different type, the one I have (and note 
> the
> programming instructions at the end of the linked page).  There are also
> Chinese versions available on the auction site, from sellers with a good
> reputation here.
>
> If you are content with the reservations I have noted, I would strongly
> advise you to get a dandelion which is already mounted in an adapter, as
> alignment in three dimensions without a jig is not for the faint-hearted.
>
> --
> Piers
>
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of Chuck Norcutt
> Sent: 03 September 2008 17:27
> To: olympus@xxxxxxxxxx
> Subject: [OM] Re: IMG: Abstract crow with 135/3.5
>
> Where does one buy Russian "Dandelions"?  Do they make good wine?  :-)
>
> Chuck Norcutt
>
> Piers Hemy wrote:
>> I am using an early version of the Russian "Dandelion" which is
>> pre-coded with the lens FL.  Later versions allow the user to program
>> (and re-program) the FL into the chip.  To say the programming
>> procedure is "arcane" would be a misrepresntation. Suffice to say that
>> I am happy with the pre-programmed version!
>>
>> --
>> Piers
>>
>>
>> -----Original Message-----
>> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On
>> Behalf Of Chuck Norcutt
>> Sent: 02 September 2008 15:00
>> To: olympus@xxxxxxxxxx
>> Subject: [OM] Re: IMG: Abstract crow with 135/3.5
>>
>> KatzEye claims little impact on metering with the E-510 screen
>> <http://www.katzeyeoptics.com/item--Olympus-E-510-Focusing-Screen--pro
>> d_E510
>> .html>
>> but only for ZD lenses.  They warn that: "Meter performance may vary
>> significantly when using non-ZD lenses with a mount adapter."
>> However, they also state: "Please note that all metering testing was
>> done using Zuiko Digital (ZD) lenses."  It's difficult to square these
>> two statements if they've never tested non-ZD lenses.  I think I'd
>> call them to see what they really do and don't know.
>>
>> ps:  Which focus confirmation adapter worked?  I never use anything
>> but the center focus point and can't imagine allowing the camera to
>> choose the focus point.
>>
>> Chuck Norcutt
>>
>>
>>
>> Piers Hemy wrote:
>>> Nice work, Peter, and good to see you back in the fold!  As far as
>>> the focus problem is concerned, I can offer a couple of pieces of
>>> advice based on my experiences using OM glass on E-bodies:
>>>
>>> Though I have not used a KatzEye, I did try an aftermarket focus
>>> screen in an E-1.  The screen has a split image focusing aid, just
>>> like an OM 1-3 screen (i.e. without the microsprisms).  Manual
>>> focusing is much easier - but metering becomes inaccurate with all
>>> lenses (even DZ), and by varying amounts depending on the lens. Flash
>> metering is pretty much impossible.
>>> I have also used focus confirmation chips on E-410 and E-3 (the
>>> version I had is not compatible with E-1), and they do work.  They
>>> are sensitive (as they should be) so it is very easy to focus through
>>> the in-focus point with a manual lens (just as with MF cameras).  The
>>> difference is that, unlike with a split image where you can see the
>>> image coming into focus, with the focus confirmation chip it's either
>>> in or out of focus, there is no "nearly there" indication.  A further
>>> handicap is that there is no indication of which focus point is the
>>> one triggering the in-focus indicator.  The E-410 itslef will
>>> indicate which of the three focus points is active, by way of a red
>>> LED.  The focus confirmation chip does not, which is hardly helpful
>>> (though I suppose I could have manually selected only the central focus
> point).
>>>
>>> Knowing what I now know, I would use liveview. The E-3, on the other
>>> hand, is much much easier to use with MF lenses, as the VF is
>>> noticably bigger and brighter.
>>>
>>> I have learned the hard way that there was a reason for Olympus to be
>>> so reluctant to release the OM adaptor!
>>>
>>> --
>>> Piers
>>
>> --snip
>>
>>
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>>
>>
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>
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