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Re: [OM] Gary's lens test...

Subject: Re: [OM] Gary's lens test...
From: Skip Williams <skipwilliams@xxxxxxxxx>
Date: Tue, 08 May 2001 21:48:46 -0400
You know, I had the same problem with a 50/1.2 shot wide open one day. I took some BEAUTIFUL portraits of my family with window light, but EVERY one was about 2-3" off focus, which effectively ruined them all. I know my eyes are failing a bit, but every shot? Geez.

I'd love to hear other stories and/or solutions.

Can an SLR get out of focus calibration?  (I know my rangefinders can do this.)

Skip

At 11:33 AM 5/9/01 +1000, you wrote:
> Erwin Voogt <erwin.voogt@xxxxxx> wrote:

> lenses should be at F8 or sometimes even at F5.6. I suspect correct
> focussing somehow plays a role within the SQF rating.

A few days ago I was comparing a few lenses (85mm f2, 100mm f2.8, 135mm
f2.8, 50mm f1.4) by taking some portraits of my daughter. She was sitting in a chair quite still and I was able to focus quite accurately (so I thought) on her
eyelashes, lighting was with T32 bounced from an umbrella.  Film was Kodak
Portra 160NC, body OM-2SP with 1-4 screen, aperture f2.8 for each lens.

When I got the film back about 1/4 to 1/3 showed incorrect focus, with the area of
sharpest focus not the eyelashes.

So how do you achieve "correct" focus ?

...Wayne

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