Bill Hume
9-Jul-2007, 13:01
I wonder if anyone has come across the strange problem I have found when I installed (correctly) a Beattie Intensescreen on my Shen Hao 8*10?
The screen is very bright and is on the film plane. However I have to move my head around a lot to see the image in all areas of the screen. If I close one eye, half the screen goes dark and the other half if I close the other eye. It is more difficult to fine focus probably because of the obvious concentric rings on the fresnel side of the glass. Once the lens is stopped down to the taking aperture, moving my head around to check focus produces a line of light radiating from the centre towards the edge of the ground glass, resebling the lines on an aircraft radar screen.
This phenomenon makes it difficult to use the Intensescreen. I have seen other 5*4 cameras with Beattie Screens and they do not show this effect.
Anyone out there with an Intensescreen on 8*10? I'd love to hear if you have a similar problem.
I do not know if I need to return the screen to the distributor or if this odd effect is because the screen is larger than 5*4.
Thanks
Bill
The screen is very bright and is on the film plane. However I have to move my head around a lot to see the image in all areas of the screen. If I close one eye, half the screen goes dark and the other half if I close the other eye. It is more difficult to fine focus probably because of the obvious concentric rings on the fresnel side of the glass. Once the lens is stopped down to the taking aperture, moving my head around to check focus produces a line of light radiating from the centre towards the edge of the ground glass, resebling the lines on an aircraft radar screen.
This phenomenon makes it difficult to use the Intensescreen. I have seen other 5*4 cameras with Beattie Screens and they do not show this effect.
Anyone out there with an Intensescreen on 8*10? I'd love to hear if you have a similar problem.
I do not know if I need to return the screen to the distributor or if this odd effect is because the screen is larger than 5*4.
Thanks
Bill