Polaroid and external lighting
The Polaroid I-2 is surprisingly versatile when paired with external lighting. I experimented with both continuous LED source (Bresser BR-RL 18 ring light) and a traditional Canon flash 540 EZ (Equipped with a homemade cardboard softbox, connected with a 2.5 mm jack to my Polaroid I-2). I tested the ring light with the FujiFilm Instax Square as well. Below you can see the results gained from these tests. I've also included two photos shot with the SX-70 in combination with a ring light. For a detailed comparison between the I-2 and the SX-70 using a ring light, read my other post here. At the end of this page, you can find the studio setup that was used for both the flash (with homemade softbox) and the ring light.
Polaroid I-2 with Canon Flash (Softbox)
Camera settings: f11; 1/50 | Canon Flash: 1/32