This is a more advanced modification that requires disassembling part of the camera and doing some soldering to switch out a capacitor, but the instructions are clear and have good photos of each step. Check it out at Holgablog

The Impossible Project—the people behind NOS Polaroid film resellers Polapremium and Polaroid photo sharing site Polanoid—bought the equipment necessary to make Polaroid 8×10 instant film, and hopes to start production in 2010. New successful prototypes of black and white integral film for SX-70 and 600 Polaroid cameras have also been completed. Awesome. More details in [...]

The new SX-70 Blend film for Polaroid SX-70s [see previous post] is now shipping from North America! Free shipping until 10 December, 2006! The seller writes: Hey everyone, SX-70 Blend is the brand new film for all SX-70 format Polaroid cameras. It uses an integrated neutral-density filter and optimized chemistry to yield more vibrant colors [...]

Since Polaroid discontinued Time-Zero film, shooting SX-70 cameras hasn’t been possible without some hacking. The folks at Unsaleable.com, purveyors of Polaroid products, have introduced SX-70 Blend film that works in unmodified SX-70s, no exposure compensation required. Specs Film Speed: ISO 640 / DIN 29 Format: 3.5 x 4.25 in. (8,9 x 10,8 cm) Image Area: [...]

Adrian Hanft (of Lego pinhole camera fame) wrote a nice, step-by-step tutorial on converting a Polaroid SX-70 camera—whose Time Zero film has been discontinued—to take the still-available 600 film. He writes: Polaroid 600 film actually fits in an SX-70 camera pretty easily. The problem with using 600 film in the SX-70 is that it is [...]