Keep in mind that, if the 28mm Elmarit-R was designed for 35mm film, the
DoF scales relate to 35mm and not 4/3 format. When shooting at f/8 the
appropriate hyperfocal scale on 35mm format lens when used on 4/3 format
is f/4. DoF is related to final image magnification and a 4/3 image
needs to be magnified twice as much as a 35mm image to get the same
output size. Therefore, the DoF parameters are twice as stringent. If
you set it at f/8 then use the Dof Scale for f/4 or two stops larger
aperture than the aperture you're actually using.
Of course, if all you're doing is making web images instead of 8x10
prints then the DoF requirements are considerably relaxed.
Chuck Norcutt
On 10/24/2011 3:27 PM, Jim Nichols wrote:
> Hi Chuck,
>
> Thanks for the kind words. Yes, the lens has well-defined DoF scales, so
> outdoor work is fine, just more frustrating than with longer lenses. The
> subject you mention was busy today, so I didn't try any close-ups.
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message -----
> From: "Chuck Norcutt"<chucknorcutt@xxxxxxxxxxxxxxxx>
> To: "Olympus Camera Discussion"<olympus@xxxxxxxxxxxxxxxxx>
> Sent: Monday, October 24, 2011 3:56 PM
> Subject: Re: [OM] IMG: Leica 28mm Elmarit-R at the Airport
>
>
>> Nice shots. I especially liked the DC-3 appropriately rendered in B&W.
>> Depending on the assumption one makes for CoC the 28mm on the E-1 has
>> a hyperfocal distance of from 13-20 feet at f/8. It should be rare to
>> have to worry about critical focus for that combo unless taking close
>> portraits of certain female attendants. :-)
>>
>> Chuck Norcutt
>>
>>
>> On 10/24/2011 12:01 PM, Jim Nichols wrote:
>>> I took the E-1 and Leica 28mm Elmarit-R to the airport today. This is a
>>> nice, sharp lens, but difficult to focus on the E-1 and E-510. However,
>>> zone focusing serves pretty well on a nice day.
>>>
>>> Vanderbilt Medical Center in Nashville has a permanent operation here, to
>>> serve the southern part of Middle Tennessee. This was one of two units
>>> ready to respond:
>>> http://gallery.leica-users.org/v/OldNick/Life+Flight+41.jpg.html
>>>
>>> I couldn't pass up a shot of the DC-3, shining nicely in the sunshine:
>>> http://gallery.leica-users.org/v/OldNick/DC-3+50+BW.jpg.html
>>>
>>> The owner of this Lake amphibian was out getting in some takeoffs and
>>> landings:
>>> http://gallery.leica-users.org/v/OldNick/Lake+57.jpg.html
>>>
>>> Comments and critiques welcomed.
>>>
>>> Jim Nichols
>>> Tullahoma, TN USA
>> --
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>>
>
>
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