Yes, you can use Polaroid 600 film in an SX-70 camera, but it requires a neutral density (ND) filter to reduce the light exposure because 600 film is significantly faster than SX-70 film. This article will explain how to do it safely and effectively, ensuring you get the best results from your classic camera.
Understanding the Differences: SX-70 vs. 600 Film
The SX-70 and 600 film formats look nearly identical, and are interchangeable in terms of size and shape. However, the key difference lies in their ISO sensitivity, which dictates how much light is needed to properly expose the film. SX-70 film has an ISO of around 160, while 600 film boasts a much higher ISO of 640. This means 600 film is four times more sensitive to light.
Using 600 film in an SX-70 without any modification will result in overexposed, washed-out images. The SX-70’s automatic exposure system is designed for the slower SX-70 film, and it cannot compensate for the increased sensitivity of the 600 film without an ND filter.
The Importance of a Neutral Density Filter
A neutral density (ND) filter acts like sunglasses for your camera. It reduces the amount of light entering the lens without affecting the color balance. An ND filter with a strength of approximately ND2 (or a 2-stop ND filter) will reduce the light by a factor of four, effectively matching the sensitivity of 600 film to the SX-70’s exposure range.
How to Use 600 Film with Your SX-70
Using 600 film in your SX-70 involves a simple addition: the ND filter. Here’s the step-by-step process:
- Acquire a suitable ND filter: These are readily available online, often designed specifically for Polaroid cameras. Look for filters that attach to the front of the lens or that can be inserted into the film cartridge itself.
- Insert the ND filter: Carefully attach the ND filter according to the manufacturer’s instructions. This might involve screwing it onto the lens or sliding it into a designated slot on the film cartridge.
- Load the 600 film cartridge: Insert the 600 film cartridge into your SX-70 as you normally would. The camera will eject the darkslide.
- Adjust the exposure compensation dial (if applicable): Some SX-70 models have an exposure compensation dial. After installing the ND filter, it’s advisable to experiment. Start with the dial set to the middle and take a few test shots. If your images are still slightly overexposed, adjust the dial towards the darker setting. If they are underexposed, adjust towards the lighter setting.
- Take your photos! Compose your shots and press the shutter button. The camera will automatically develop the image.
Tips for Achieving Optimal Results
While using an ND filter makes 600 film compatible with the SX-70, there are a few additional tips to consider for optimal results:
- Experiment with different ND filter strengths: While an ND2 filter is a good starting point, you may find that a slightly weaker or stronger filter works better in certain lighting conditions.
- Consider the light: Even with an ND filter, very bright sunlight can still cause overexposure. Try shooting in slightly shaded areas or during the golden hour for softer, more balanced light.
- Pay attention to the development time: Polaroid film requires time to develop fully. Keep the photo out of direct sunlight during development.
- Clean your rollers: Dirty rollers can cause uneven development. Regularly clean the rollers inside the camera with a soft, lint-free cloth.
Frequently Asked Questions (FAQs)
1. Will using 600 film damage my SX-70 camera?
No, using 600 film with an appropriately rated ND filter will not damage your SX-70. The filter reduces the light entering the camera, allowing the SX-70’s mechanism to function as intended. Without the filter, consistent overexposure could potentially stress the motors over time, but the film itself poses no threat.
2. What happens if I use 600 film in my SX-70 without an ND filter?
Your photos will be severely overexposed, resulting in images that are almost entirely white or washed out. The SX-70 simply cannot handle the increased sensitivity of the 600 film without the light reduction provided by the filter.
3. Are there different types of ND filters for Polaroid cameras?
Yes, there are. Some are designed to be attached to the front of the lens, while others are inserted directly into the film cartridge itself. Cartridge filters are generally easier to use but might not be reusable. Lens filters offer more flexibility and can be used with multiple film packs.
4. Can I use a variable ND filter with my SX-70?
Yes, a variable ND filter offers more flexibility. You can adjust the filter’s density to fine-tune the exposure. However, be mindful of the potential for color shifts or vignetting at higher densities. Experiment and find the sweet spot for your SX-70 and 600 film combination.
5. Where can I buy ND filters for my SX-70?
ND filters for Polaroid cameras are readily available online from retailers like Amazon, B&H Photo Video, and specialty photography stores. Search for “Polaroid ND filter” or “SX-70 ND filter” to find suitable options. Check reviews to ensure quality and compatibility.
6. Is it cheaper to use 600 film with an ND filter than to buy SX-70 film?
This depends on the price of SX-70 film and the cost of the ND filter. Generally, SX-70 film is more expensive than 600 film. Purchasing a reusable ND filter can make using 600 film a cost-effective alternative in the long run.
7. How do I clean the rollers in my SX-70 camera?
Open the film door and gently wipe the rollers with a soft, lint-free cloth dampened with distilled water or isopropyl alcohol. Avoid using excessive force, as the rollers are delicate. Clean them regularly to ensure even development.
8. Can I use the lighten/darken wheel to compensate for overexposure if I forget my ND filter?
While the lighten/darken wheel can help slightly, it is not a substitute for an ND filter. It offers a limited range of exposure compensation and will not be sufficient to correct the significant overexposure caused by using 600 film without a filter. You’ll still likely get a washed-out picture.
9. Does the type of SX-70 camera I have matter when using 600 film?
No, the principles remain the same regardless of which SX-70 model you own. The fundamental issue is the difference in film speed, which is addressed by the ND filter. The exposure compensation dial (if present) allows for fine-tuning, but the filter is essential.
10. Can I remove the ND filter after taking a photo?
If you’re using a lens-mounted ND filter, there’s no need to remove it after each shot. It stays on the lens for all shots with 600 film. If you’re using a cartridge filter, it remains in place as the film is all within the cartridge.
11. How long does it take for a Polaroid photo to develop?
Polaroid film typically takes 10-15 minutes to fully develop, although the image will be visible sooner. Keep the photo out of direct sunlight during development. Modern Polaroid film is more stable than older versions, but still benefits from being shielded during this crucial period.
12. Where can I find more information about Polaroid photography and camera maintenance?
Numerous online resources offer information on Polaroid photography, including websites like Polaroid.com, Impossible-Project.com (now part of Polaroid), and dedicated forums and communities for Polaroid enthusiasts. Consider searching on YouTube for video tutorials on SX-70 maintenance and troubleshooting.