Using the Zone System with Polaroid SX-70 Film, Part 2

Note: There is a video version of Using the Zone System with Polaroid SX-70 Film, Part 1 at the bottom of this post.

In Part 1, I explained the theory behind the Zone System, how I thought it might benefit today’s serious SX-70 photographer and I painstakingly outlined my process for taking the photos required to make a Zone Ruler. If you haven’t, I recommend you take a look at Part 1 before continuing with Part 2.

In Part 2, I analyze my set of “towel photos” taken with Polaroid Color 600 film, build a Zone Ruler, provide some practical tips for using the Zone Ruler in your own SX-70 photography and show a number of photos I’ve taken over the last six-plus months using my Zone Ruler.

Continue reading

Using the Zone System with Polaroid SX-70 Film, Part 1

Note: There is a video version of Using the Zone System with Polaroid SX-70 Film, Part 1 at the bottom of this post.

SX-70 film is a remarkable feat of engineering. To think that the entire photographic process—taking a photo, developing the negative, printing the negative, developing the print, framing the print—is all done in one step: take the photo and a finished, framed print is ejected!

That magic comes with a few downsides, the most concerning being the limited latitude or dynamic range of the film. While most camera films might be expected to have a dynamic range of 8-9 f-stops between black and white with an extensive range of grey values in-between, SX-70 film has a much smaller dynamic range. Simply put, SX-70 film is extremely contrasty. The film loves low contrast scenes shot in overcast conditions but good luck capturing a bright sunny scene with deep shadows.

In an effort to gain some level of creative control over the SX-70 film’s limited latitude, it occurred to me that the Zone System might be worth exploring.

Continue reading

The Polaroid Folding SX-70 on Steroids: A Review of MiNT Camera’s SLR670-S

The MiNT SLR670-S (right) and the original Polaroid Alpha 1 (left)

One of the frustrations of working with the Polaroid SX-70 camera is its fully automatic exposure system. As a well-seasoned photographer, I am accustomed to being in full control of setting aperture f-stops and shutter speeds to determine the correct exposure for my pictures. For Polaroid cameras—including the sophisticated folding SX-70 camera of the 1970s and 80s—the sole user control is the uncalibrated exposure compensation dial allowing the exposure to be adjusted lighter or darker by some unknown factor. Getting a good photo on the first try is unlikely and, on occasion, I have used an entire film pack to get one decently exposed image.

There is but one way to gain some semblance of exposure control on an SX-70 camera and that is to buy a specially modified version.

Enter MiNT Camera, a Hong Kong-based company that refurbishes vintage folding SX-70 cameras, installs new electronics and a new electric eye, reclads the camera with black or brown leather and adds a small exposure control module—something they call the Time Machine—that attaches to the camera’s flash socket. MiNT produces three versions of its camera: the SLR670m has the Time Machine, works with SX-70 and 600 films manually and with SX-70 in Auto mode or with the Time Machine detached; the SLR670-S adds an Auto mode for 600 film and the camera natively shoots Polaroid 600 film with the Time Machine detached; the SLR670-X adds external flash sync and metal cladding instead of the regular leather cladding. There is also a SLR670-S Classic model but it appears to use a pre-Alpha 1 version of the SX-70 camera and does not have a tripod socket—which I consider essential—or neck strap loops.

Continue reading