Aender Brepsom
13-Aug-2007, 02:04
Hello,
on the left metal part of the Ebonys' front standard, there is a red dot to align with the wooden part that holds the lens board, which has a white dot. I guess, this is the zero position of rise/fall.
My question is: Is this zero position for lens boards where the hole is drilled in the centre or for those where it is a little further down the centre of the lens board?
With lenses with a large image circle, this might be quite irrelevant, but with a lens that would only just cover the 4x5" format, this probably makes a huge difference and may result in vignetting (for example with a 55mm Apo-Grandagon, 163mm IC).
Thank you for your help.
Aender
on the left metal part of the Ebonys' front standard, there is a red dot to align with the wooden part that holds the lens board, which has a white dot. I guess, this is the zero position of rise/fall.
My question is: Is this zero position for lens boards where the hole is drilled in the centre or for those where it is a little further down the centre of the lens board?
With lenses with a large image circle, this might be quite irrelevant, but with a lens that would only just cover the 4x5" format, this probably makes a huge difference and may result in vignetting (for example with a 55mm Apo-Grandagon, 163mm IC).
Thank you for your help.
Aender