I'll just advise you to utilize a medium format sensor so that your
choice of f/16 will not produce diffraction limited images. :-)
Dr. Diffraction
On 7/7/2012 1:47 PM, Jim Nichols wrote:
> Thanks, Bob. I'll consider getting it out again, once this heat abates a
> little. Right now, for an old guy like me, the heat just sucks the energy
> out of me very quickly.
>
> However, I will probably get another diffraction lecture from Chuck, since
> the maximum opening of this lens is f/16!
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message -----
> From: "Bob Whitmire" <bwhitmire@xxxxxxxxxxxxxx>
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Saturday, July 07, 2012 9:42 AM
> Subject: Re: [OM] A shot with higher dilution for contrast control
>
>
>> My guess is that no one ever expected to see an old brass lens mated to an
>> Olympus E-1 or any other digital camera. And the image is quite nice. I
>> like the quality of the shot. How about doing more of those?
>>
>> --Bob
>>
>>
>> On Jul 6, 2012, at 9:54 PM, Jim Nichols wrote:
>>
>>> Michael,
>>>
>>> Your reference to an 1892 brass lens reminded me of my experience with a
>>> lens from that period. Mine was by Ross London, and is marked 8-inch No.
>>> 6
>>> Symmetrical. It has Waterhouse stops, with the largest being 1/2-inch in
>>> dia., making it an f/16 lens. Rather than try to use my old 4x5 Speed
>>> Graphic, I fitted it to a bellows and used it on my Olympus E-1. The
>>> images
>>> linked below show the hardware and an image made with this setup.
>>>
>>> The lens:
>>> http://gallery.leica-users.org/v/OldNick/Ross+Lens+2.jpg.html
>>>
>>> The assembly:
>>> http://gallery.leica-users.org/v/OldNick/Final+Assembly.jpg.html
>>>
>>> The image, made on a very cold day in January:
>>> http://gallery.leica-users.org/v/OldNick/Mocking+Bird.jpg.html
>>
>> --
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>>
>>
>
>
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