Re: Center Filter--Do I need one?

["Gene F. Rhodes" <GFRhodes@xxxxxxxxxx>]

OK Sir Simon,
It's built and installed and trials will start tomorrow
at sun up. Of course, I did it my way but I won't
tell you how unless it works.
You didn't realize what a microscopic lens the
super angulon is. The front element is 29 mm,
and my new filter is 17 mm. Thanks for coming
through. You'r a nice old man Sir.
Gene----(from behind Turnpike Ford in Tulsa)

Simon Nathan wrote:

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> dear gene- start with fourth line down. that's side
> view of two

> inch gelatin neutral density filter. third line down
> is same but
> you've made it 1-1/2"x2", next gel. nd sq. is 1" x2". top is
> 1/2"x 2". i am having trouble illustrating this with single finger
> control on keyboard. what you have done is to make
> centerweighted nd filter to match your lens. center has three
> gel strips holding back light to makes edge nd equalize.
> worked on tomiyama art   when used in 6x24cm mode.
> scotch held it there, as well as together.    
> scale widths
> f nd slices to width of from element. costs ya  lens speed
> same as expensive kind. simonsays

--
II*