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Steven, yes it is an old idea and from my research it worked quite well then. Even Mathew Brady use one. As far as variable exposure is concerned, it is unnoticeable in the end results. If the unit...

Bob, just to let you know that I have booked a room at Lil' Abners Motel. Located one mile from the park entrance. Very resonable rates and fairly high reviews. See ye there about noon Friday Oct.2

68 here and up to a 6.5x8.5 and hope some day to graduate to an 8x10. Been at it since Columbus landed at Plymouth Rock......hope to learn how to one of these days.

Andrew; The adjustments are made by increasing or decreasing the size of the slit. Thanks for asking.

Someone wanted to know about free fall guillotine shutter speeds. Here is the formula;
D=Vi*T+1/2*A*T^2
According to this formula a shutter falling 2.5" from a rest state has a velocity of 2.49mph...

Bob; Tis the first of August and I noticed that the Black gum trees are begin to show their colors and they are vivid. I look for this fall to be abundant with lots of colors because of the wet...

"Ron -- so make one with a 5 1/2 inch hole, and we'll mount it on a coated Cooke Series VIa soft focus 460mm Knuckler (weighs 10+ pounds and barely fits on a 171x171 arca swiss board...the weight of...

The photos posted in reference to the item being discussed ( said not to mention it again) are not manipulated, but actual results of the item being discussed here on this forum. I was about to loose...

Thanks Van Camper, for the advice. I really appreciate your approach. Straight to the point. No more will be said about the *******.

Nathan did you try the experiment that I suggested, taking a dark stiff board and cut a small slit across it and pass it across the front of your lens, Try a 1mm slit (the smallest of my settings)...

"Ron,
read again your listing - nowhere, not even under the "Shipping and Payments" tab do you state that "we will gladly refund their money". Nowhere! You have never said that in your listing. It...

GPS;
Look at the "Return Policy" under the "Shipping and Payments" tab. Stated quite clearly. " 7 days after the buyer receives it Money back.
It would be nice if you get your...

GPS;
'Matthew Brady used a shutter in 1850. This, like the Fizeau and Foucault unit was a "drop" or "guillotine" shutter,' Maybe Brady had only one lens and others in that era using the guillotine...

I've seen only two types of shutters, the focal plane and the leaf, this isn't for sure a leaf shutter is it. Now what is misleading about " We want". Now prove to me it isn't more accurate over...

GPS; there you go again making false and misleading statements saying that we make the most accurate shutter made; this is what is stated in the description of which you refer; "We want to produce a...

It sure can. Lets say your largest lens glass size was 3" and your smallest lens glass size was 1.5", then I would cut the envelope to slightly over the glass size and then build the sleeve to your...

I'm from SE ky, near London at remote area called Tyner. I'd love to burn some silver anywhere in this area.

Hope i'm not talking to myself! Back with the shutter test with the electronic testor and here are the results. I had little time to go through all the speeds. Vertical= 1/20th, 26degree...

The old man from the mountains would like to introduce himself to all the great members of this great website. It is a great resource and very beneficial to all LF shooters. Wished I had joined years...

The actual shutter distance from the lens of my unit is sitting at 2mm . Not unlike Jim Galli's shutter, my theory is almost identical to his and what about using your lens cap, do they work? I...

I would but I'm in Europe for the moment and to send it back would cost me more than I would like to pay for the proof. But no amount of testing can remove the basic physical limitation of the...

The front mount shutter was introduced in the late 1800's as evident of the Thornton Pickard front mount model as seen here;...

It is good to see that there are some who have a bit of common sense. I would like for someone to prove to me what the difference of light control in front and in rear of the lens would be. I have a...

The Thornton Pickard shutter( http://licm.org.uk/livingImage/Shutters-Blind.html ) wasn't even close to the film plane (as much as 12" in some case) but slightly behind the lens and used a curtain...

If I sent you a shutter to test, would you return it afterward?

Ken Lee
The larger the lens the larger the shutter. I have a shutter on an Industar 37 300mm with a barrel size of 3.5". The shutter measures 5x12.5" The shutter in the photos measures 4x10.5". A...

I realize that everyone can't be pleased all the time especially if they have been rode hard and put up wet and been left with a raw disposition. Those I ignore, the ones who knows all about...

It really doesn't make that much difference about how fast it drops as long as it is repetitively constant each time, in which it is. The materials chosen work together with almost no resistance....

The replies to my original announcement of the shutter led into debates about the shutter. I was led to believe that a new product that was beneficial to the members of this forum could be announced....

Yes, it works up to and slightly beyond a 45 degree tilt.
No, it isn't too expensive. Consider the cost of having a lens set in a shutter and the cost of that shutter and furthermore how long will...

The Thorton-Pickard that is for sale now is much more expensive and looks to out weight the Gatts/Tincher shutter many time over. I don't have to defend the Gatts/Tincher shutter, it has proven...

Selecting the speeds is simply removing a pin and repositioning the curtains. Not shown in the photos.

A new slip on focal plane gravity fed shutter is now ready for anyone who may be interested in one. Photos of the shutter and photos taken with the shutter on a LF camera can be seen at this link; ...

Anyone who has developed and perfected any new idea or technique for the enhancement and pleasure of mankind, be it in any classification of art or craft, may be bestowed with the honor of "Old...