Pretty cool. Very nice images, BTW. I tried to see how closely I could
make no disk at f/4 look like disk #3 at f/4 using a guassian blur. But
the light is so different between those two images that it's difficult
to tell.
Chuck Norcutt
Wayne Harridge wrote:
>>Here's a soft focus Rodagon. No variable aperture though. Just
>>replaceable aperture/diffusion disks
>><http://glennview.com/jpgs/lens/300imagon/big_1.jpg>
>>
>
> The following link:
>
> http://lrh.structuregraphs.com/test/sfc150.htm
>
> shows some examples of my Mamiya-Sekor 150mm SF C lens on an RB67. The SFC
> uses the same sort of disks (3 different types) which mount inside the lens
> barrel near the diaphragm blades. Note the appearance of the specula
> highlights in the shots at f4. Once the lens is stopped down to f8 there is
> no effect from the outer holes of the disk as they are completely obscured
> by the stopped down diaphragm. The SFC gives a soft image at the larger
> apertures even without the special disks due to uncorrected aberrations.
>
> ...Wayne
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