Scanning medium and large format negatives - film holder?

Started 4 months ago | Questions thread
mamallama
mamallama Forum Pro • Posts: 58,715
Re: Usa a mirror to get alignment

Vegar Beider wrote:

Hello NextSibling!

When you say:

" - get all the planes in good enough alignment (takes a little trial and error, but quite doable). "

I found that the easiest way to get alignment will be to place a mirror flat onto the light panel, with the mirror's reflective surface facing the lens. When looking through the camera's viewfinder and adjusting the camera so that I am looking straight into the center of the mirrored lens, the camera's sensor and the film will be aligned. (Keeping the camera steady (on a tripod), is a must.)

The mirror technique sounds interesting. I have set up and used many makeshift vertical copy stands for photographing flat works - some for large paintings using a stepladder as the vertical column. The alignment technique I found easy and quick was to use a simple bubble level (picture below) to ensure that both the camera sensor and the target base were two-way horizontal. Them means they are parallel to each other. It is then a simple matter to center the object in the camera frame.

To hold the film/negative flat I place it between two abolutely clean and scratch free glass plates. To avoid getting possible scratches and dust on the light panel's surface in focus, I raise the film a little bit above the surface of the light panel. Enough to get "outside" the depth of field area. When I also avoid getting any light at all on the "lens side" of the film, there will be no reflections on the glass plates. The macro lens I am using has no white lettering around the filter thread thay might be reflected.

Regards

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