How to Mount Stereo Slides


Now that you've correctly set up the camera(s), exposed two images, and have the developed transparencies in hand, it's time for the second (and equally important) step of mounting the slides in the stereo mask.

Step One

mount1.gif Be sure to keep to track of your image pairs. If you made multiple exposures using different bases (the separation between camera positions for each stereo pair), or bracketed exposures (different shutter speeds or aperature settings for the same subject), make notes BEFORE you cut the film. Also, if you can, keep track of which image is Left and which is Right. If you can't, don't worry; it will become apparent in Step 5. Now that you've made good notes for your images, cut the film and set aside the pair you want to mount first.

Step Two

mount2.gif This step assumes you're using the Albion mounts. If not, the process is similar. The trick here is to first slightly bend out the slots on the top and bottom of the mounts to allow the film to slide in and be held in place. Using tweasers, pick up the film and place the bottom edge into the bottom slot. Reposition the tweasers to the side of the film, bend the film so that the top edge slides under the top slot. Repeat for the other side.

Step Three

mount3.gif Using the point of a sharp knife, move the film horizontally in the slots so that each of the images is roughly centered within the viewing frame. Also, try to get the bottom edges of the film parallel with the slots. If the film is loose within the slots, pick up the mount and try to press the slot tabs tightly against the film from the opposite side. The stereo image is now ready for previewing to check for alignment.

Step Four

mount4.gif Carefully place the stereo mount into the slide viewer. The goal at this point is to look for alignment problems. Examine the image for the following:
Stereo Window placement - is the image frame in the right position?
Horizontal alignment - do objects in both images line up horizontally?
Vertical alignment - do the objects in both images line up vertically?
Rotational errors - are the films rotated within the mount?
Remove the mount and make the necessary adjustments with the knife point.

Step Five

mount5.gif Once satisfied with the placement of the film within the mount, secure the film from movement with tape (photo suppliers offer sticky tabs perfect for this job). Place tape over the slot openings so that the tape overlaps the aluminum mount and the film with one piece. Use your fingernail to rub the tape and achieve good adhesion.

Step Six

mount6.gif Place the mount within a Universal Cardboard Foldover. Tape (I recommend 1/2 inch Artist's tape for its archival qualities) the edges first, then the bottom. Cut the excess away with scissors. Rub the tape down for good adhesion. Congratulations! You have a stereo slide.
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License