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A Guide to Buying Roll Film Backs for Large-Format Cameras

Even with recent technology at your fingertips, many hobby and professional photographers prefer to shoot with film when capturing that special event rather than in digital format. For those who love to work with large-format cameras that produce a higher resolution image, a roll film back is a necessary accessory to properly use spooled film in medium formats. These backs have been made by most large-format camera manufacturers and in a variety of film sizes.

What types of cameras use a roll film back?

This type of camera accessory is used mostly for large-format cameras that can produce images of 4 by 5 inches or larger. These backs allow a photographer to modify a large-format camera to take medium format (6 by 6 to 6 by 9-inch) shots, or 35mm film in some cases. Some of the most common cameras that use a film back for roll film include:

  • Old studio box cameras
  • Graflex Speed Graphic
  • Crown Graphic
  • Kodak Master View
What types of film are used in roll film backs?

The reason that many photographers have a back attachment for roll film is so they can shoot their images in medium format instead of large format. This is often because roll film is easier to access and more affordable than the large-format prints. The most common film size used in these large-format backs is 120. This film is typically 2.4 inches wide and 30 inches long. The film is wound onto a metal or plastic spool with backing paper that protects the undeveloped film while loading and unloading the back. These film backs can also use 220 film, which is similar to the 120 size. The only difference in 220 film is that there is more film length on the spool, allowing photographers to take more images per roll.

Although less common, you can also find film backs for 620 film, which is 120 film rolled onto a narrower spool than the 120 variety. Some photographers respool 620 onto a 120 spool to fit all common back attachments. Film backs are also available for smaller 35mm rolls, which is the most common film variety available.

How do you maintain a roll film back?

Because many roll film back attachments were manufactured during the height of film camera use, it is important to properly maintain this important large-format camera attachment.

  • Clean it up: Keep the film back clean of dust and dirt to make sure you won't impact your film.
  • Practice makes perfect: If you are not familiar with a particular back, practice loading and unloading film spools in the light before you try it in a darkroom.
  • Take care: Never force mechanisms if they are stuck. This can cause worse damage to the back or make your film jam while shooting.

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