The short answer is a resounding yes, you can use a Polaroid film back on a Mamiya RB67 camera, but there are crucial nuances to consider for optimal results and to avoid potential damage. This article explores the process in detail, offering expert advice and answering frequently asked questions to ensure your successful experimentation with instant photography on the legendary RB67.
Understanding Polaroid Film Backs and the Mamiya RB67
The Mamiya RB67 is a medium format workhorse renowned for its modular design, allowing for interchangeable backs, lenses, and finders. This adaptability extends to accepting Polaroid film backs, transforming the RB67 into an instant photography machine. However, not all Polaroid backs are created equal, and understanding their compatibility and limitations is essential.
The most common Polaroid backs compatible with the RB67 are those designed for pack film, specifically Fuji FP-100C or similar instant pack films. Sadly, these films are now discontinued, making the use of these backs reliant on finding expired stock or exploring alternative solutions, which we will discuss later.
Setting Up and Using a Polaroid Back
Successfully using a Polaroid back on your RB67 involves a few key steps:
- Attaching the Back: Remove the standard Mamiya RB67 film back. The Polaroid back will then slide into place, engaging with the camera’s rotating back mechanism. Ensure it clicks securely to avoid light leaks.
- Dark Slide Management: The Polaroid back has its own dark slide. Remember to remove it before taking a picture and replace it after taking the picture before removing the print.
- Framing and Focusing: Compose your shot using the RB67’s viewfinder. Remember that the framing might be slightly different compared to using a standard roll film back.
- Taking the Shot: Set your aperture and shutter speed as usual. The light meter reading might require adjustment depending on the ISO rating of the instant film being used.
- Pulling the Print: After taking the picture, pull the print out of the back using the built-in rollers. This action spreads the developer and activates the instant process.
- Development Time: Allow the print to develop for the recommended time, usually a few minutes. This varies depending on the film type and temperature.
- Peeling and Sealing (if applicable): Some pack films require peeling apart the positive and negative after development. Follow the film’s instructions carefully.
Troubleshooting Common Issues
Using a Polaroid back on an RB67 can present challenges. Addressing them proactively can save you frustration:
- Light Leaks: Ensure the back is properly seated and that the dark slide is correctly used. Check the light seals on both the back and the camera body.
- Uneven Development: This can be caused by uneven pressure from the rollers. Try cleaning the rollers gently. Temperature variations during development can also contribute.
- Exposure Problems: The ISO rating of instant film often differs from roll film. Adjust your exposure settings accordingly. Use a handheld light meter if unsure.
FAQs: Deep Diving into Polaroid Backs and the RB67
Here are some commonly asked questions, designed to provide additional clarity and guidance:
Q1: What type of Polaroid film is compatible with the Mamiya RB67’s Polaroid back?
The Mamiya RB67 Polaroid backs primarily accept pack film, specifically films similar to the now-discontinued Fuji FP-100C. Instant film pack sizes like Polaroid 667 and 669 are also commonly supported. It’s crucial to verify compatibility based on the specific model of your Polaroid back. Modern Instax Wide film will NOT work without modification.
Q2: Are there any alternatives to Fuji FP-100C since it’s discontinued?
Finding direct alternatives to Fuji FP-100C is challenging. However, some options exist:
- Expired Film: Expired FP-100C can still be found, but results are unpredictable.
- One Instant Packs: These are attempting to recreate the pack film experience, but availability and quality vary.
- Polaroid i-Type film + Adapters: Some DIY adapters exist for modifying i-Type film backs to work, but these require significant modification and are not guaranteed.
Q3: How do I clean a Polaroid back for the Mamiya RB67?
Clean the back with a soft, dry cloth. For stubborn residue on the rollers, use a slightly damp cloth with distilled water. Never use harsh chemicals or solvents.
Q4: Will a Polaroid Land Camera back fit the RB67?
No. Polaroid Land Camera backs are generally designed for specific Polaroid Land Camera models and are not compatible with the Mamiya RB67. You need a Polaroid back specifically designed for medium format cameras.
Q5: How can I adjust the exposure when using a Polaroid back?
Experiment and learn. Start by using the ISO rating on the film box as a guide, but bracket your shots by shooting at different apertures and shutter speeds. Instant film can be sensitive to exposure variations. It’s always better to overexpose slightly than underexpose.
Q6: Can I use a digital back with a Polaroid back adapter on the RB67?
While technically possible with highly specialized custom-made adapters, it’s generally impractical and not recommended. The complexity and cost involved usually outweigh the benefits. A digital back is better used with a proper digital back adapter.
Q7: What happens if my print gets stuck in the Polaroid back?
Carefully open the back in a darkroom or changing bag. Gently try to remove the print. Avoid pulling forcefully as this could damage the back. Inspect the rollers for any obstructions.
Q8: How can I tell if my Polaroid back is working correctly?
Test the back with a sacrificial pack of film to verify that it feeds and develops properly. Look for even development and the absence of light leaks.
Q9: Do I need a special lens for using a Polaroid back on the RB67?
No. You can use any lens compatible with the Mamiya RB67 system. The choice of lens will affect the field of view and depth of field, as with regular photography.
Q10: Where can I find Polaroid backs for the Mamiya RB67?
Online marketplaces like eBay are the most common sources. Camera stores specializing in used equipment may also carry them. Inspect the back thoroughly before purchasing to ensure it is in good working condition.
Q11: What are the advantages of using a Polaroid back on the RB67?
The primary advantage is the ability to capture instant photos with the superior image quality and lens options of the RB67. This allows for creative experimentation and immediate results, perfect for test shots or creating unique prints.
Q12: Is there anything I should be cautious about when using a Polaroid back on my RB67?
Be mindful of the scarcity and cost of instant pack film. Test your setup thoroughly before shooting important events. Proper maintenance and careful handling of the Polaroid back are crucial to prolong its lifespan. Also, practice removing the dark slide, pulling the film, and developing the print before going out to shoot valuable photos.
Conclusion: Embrace the Instant Possibilities
Using a Polaroid film back on your Mamiya RB67 opens up a world of creative possibilities. While challenges exist, particularly with the limited availability of pack film, the results can be incredibly rewarding. By understanding the equipment, mastering the process, and addressing potential issues proactively, you can unlock the magic of instant photography with the iconic RB67. Experiment, have fun, and capture moments in a truly unique way.