The Folmer & Schwing Manufacturing Company, later absorbed into Graflex, produced excellent cut film magazines for 4×5 cameras. However, not all 4×5 camera backs are created equal. In general, a standard Graflok-type back is required to reliably accommodate Folmer cut film magazines.
Understanding Folmer Cut Film Magazines and Camera Back Compatibility
The world of large format photography can be intricate, particularly when dealing with vintage equipment. Folmer cut film magazines, prized for their robustness and ability to rapidly switch between shots, were designed to integrate seamlessly with specific types of 4×5 camera backs. A mismatch can lead to light leaks, insecure attachment, and ultimately, ruined images.
The Graflok Standard: The Key to Compatibility
The Graflok back represents a standardized interface designed to accommodate a wide range of accessories, including cut film holders, roll film backs, and, critically, Folmer cut film magazines. Characterized by its sliding lock levers (usually four, one on each side) and a precision-engineered recess, the Graflok back ensures a secure and light-tight connection. This system became an industry benchmark, and most modern 4×5 cameras are now equipped with Graflok backs.
The Spring Back Alternative: A Potential Pitfall
While Graflok backs offer versatility, spring backs, also known as international backs, represent a more basic design. These backs rely on spring pressure to hold film holders in place. While some Folmer magazines can technically be forced to fit into a spring back, this is not recommended. The fit will likely be loose and insecure, leading to light leaks and potentially damaging the magazine or camera. Furthermore, forcefully jamming the magazine into a spring back can distort the back’s springs, making it difficult to use standard film holders afterwards.
Identifying Your Camera Back
Before attempting to mount a Folmer magazine, carefully examine your camera back. Look for the sliding lock levers characteristic of the Graflok system. If these are present, you have a Graflok back and are likely to have a successful and secure fit. If you only see spring clips, you have a spring back and should consider either replacing it with a Graflok back or avoiding the use of Folmer magazines with that camera.
Common Issues and Troubleshooting
Even with a Graflok back, minor issues can arise. Vintage magazines may have slightly different dimensions due to manufacturing tolerances or wear and tear.
Light Leaks
One of the most common problems is light leaks. These appear as unwanted streaks or fogging on your film. If you suspect a light leak, carefully inspect the magazine for cracks or damage to the light seals. Replace any damaged seals with new foam or felt. Also, ensure that the magazine is properly seated against the Graflok back and that all locking levers are fully engaged.
Binding or Difficulty Inserting the Magazine
If you encounter resistance when inserting the magazine, do not force it. Check for obstructions and ensure that the locking levers are fully retracted. Clean the magazine’s mounting surfaces and the Graflok back to remove any dirt or debris. Applying a tiny amount of silicone lubricant to the magazine’s edges can sometimes ease insertion, but use it sparingly.
Magazine Not Locking Securely
If the magazine does not lock securely, the Graflok levers may be worn or damaged. Check that the levers move freely and engage fully. In some cases, the levers may need to be adjusted or replaced.
Frequently Asked Questions (FAQs) about Folmer Cut Film Magazines and Camera Backs
Here are some of the most common questions about Folmer cut film magazines and their compatibility with 4×5 camera backs.
FAQ 1: What is the difference between a Graflok back and an International back?
A Graflok back features sliding lock levers to securely attach accessories, offering a more versatile and reliable connection. An International back (also known as a spring back) relies solely on spring pressure to hold film holders, which provides a less secure and adaptable system.
FAQ 2: Can I modify my spring back to work with a Folmer cut film magazine?
While theoretically possible, it’s not recommended. Modifying a spring back can damage the back, weaken the springs, and still not guarantee a light-tight and secure fit. Investing in a Graflok back is the safer and more reliable option.
FAQ 3: Where can I find a Graflok back for my vintage 4×5 camera?
Graflok backs are commonly available on online auction sites like eBay, from used camera equipment dealers, and occasionally from large format photography specialty shops. When purchasing, ensure it’s the correct size and in good working condition.
FAQ 4: What size Folmer cut film magazine do I need for a 4×5 camera?
You need a 4×5 Folmer cut film magazine specifically designed for 4×5 cameras. These magazines are sized to accommodate standard 4×5 film sheets.
FAQ 5: How do I load film into a Folmer cut film magazine?
Loading a Folmer cut film magazine requires a darkroom or changing bag. Consult the magazine’s instructions (often available online) for the correct loading procedure. Practice loading in daylight with scrap film until you are comfortable.
FAQ 6: Are all Graflok backs identical?
No, while they share the same basic design, some Graflok backs may have slight variations in dimensions or features. Ensure the back you purchase is compatible with your specific 4×5 camera model.
FAQ 7: My Folmer magazine is missing parts. Where can I find replacements?
Replacement parts for vintage Folmer magazines can be difficult to find. Check online forums dedicated to large format photography, used camera equipment dealers, and online auction sites. Sometimes, buying a second, incomplete magazine for parts is the most practical solution.
FAQ 8: How do I clean and maintain my Folmer cut film magazine?
Regular cleaning is essential. Use a soft brush to remove dust and debris. For stubborn dirt, use a slightly damp cloth. Avoid using harsh chemicals or solvents, as they can damage the magazine’s materials. Periodically inspect and replace the light seals.
FAQ 9: Can I use modern 4×5 film holders with a Graflok back?
Yes, one of the primary advantages of a Graflok back is its compatibility with standard modern 4×5 film holders.
FAQ 10: What are the advantages of using a Folmer cut film magazine over individual film holders?
Folmer cut film magazines offer rapid film changes, allowing you to quickly switch between different film types or exposures without removing the magazine from the camera. This is particularly useful in situations where time is limited or dust contamination is a concern.
FAQ 11: Is there a way to test my Folmer magazine for light leaks before shooting important images?
Yes, load the magazine with a sheet of unexposed film in the darkroom. Then, in normal room light, leave the magazine for several hours (or even overnight). Develop the film. Any light leaks will appear as streaks or fogging on the developed film.
FAQ 12: What are some alternative brands of cut film magazines besides Folmer?
Other brands of cut film magazines for 4×5 cameras include Graflex, Lisco, and Fidelity. However, compatibility with specific camera backs should still be verified before use.
Conclusion
Using Folmer cut film magazines can significantly enhance your large format photography workflow, but ensuring compatibility with your camera back is crucial. By understanding the differences between Graflok and spring backs, and by carefully inspecting your equipment, you can avoid costly mistakes and maximize the potential of these classic accessories. Always prioritize a secure and light-tight fit to achieve the best possible image quality.