NOTE: The below Blu-ray captures were taken directly from the Blu-ray disc.

ADDITION: Kino Blu-ray (June 2023): Kino have transferred Tom DeSimone's Prison Girls to Blu-ray. It is cited as being from a "Newly Remastered / Restored in 3-D by 3-D Film Archive". An opening screen indicates: "PRISON GIRLS was filmed using the 16mm dual-camera Optovision 3-D system.
The camera shutters were not interlocked, and the resultant out-of-phase image is baked in and not fixable.
The small frames were slightly enlarged and printed left above/right below on one strip of 35mm film for theatrical exhibition in 1973.
This presentation faithfully reflects the image quality inherent to 35mm Optovision polarized 3-D release prints."

NOTE: Any color television can play an anaglyph 3D film and to see the depth effects would require the Anaglyphic 3-D glasses which are included with the Blu-ray.

Firstly, this Kino Lorber Blu-ray package offers both the 3D Polarized and Anaglyphic (Red/Cyan) 3-D versions of the 1972 film Prison Girls. We will only review the anaglyph 3D film version here although I sampled a few of the 3-D effects at a friend's house who has a 3D TV (shower/soap water, knives, pointing hands etc.). The 1080P image is very representative of 16mm - rough, heavy textures but the HD presentation showed some bold colors. Overall the visuals are overwhelmed by the grain but the Anaglyphic 3-D glasses notably improve the appearance and there is a kind of soft depth visible.

On their Blu-ray, Kino use a DTS-HD Master dual-mono track (16-bit) in the original English language. Prison Girls has aggressive (shower cat-fighting, beatings, gunfire etc.) moments that come through with modest depth and the music arranger / music director is listed as Christopher Huston - his only film credit. It falls in-line with the modest production values - occasionally scattered and less-discernable  (is that the rattle of the 16mm camera?) Kino offer optional English subtitles on their Region 'A' Blu-ray.

The Kino Blu-ray offers a new commentary by Horror-Fix.com's James G. Chandler and Ash Hamilton. They discuss "the elephant in the room"; the amply endowed actresses and how the orgies were more like 'competitive twister' with a combination of real and fake penetration. They were very enjoyable to listen to, fun and they made some interesting comments about the 3D process used, the sets, other WiP (Women in Prison) genre films and the participants; director DeSimone. Good job - I appreciated the humor. There are also 6-minutes of 2D deleted scenes and a 2D trailer. The package has a pair of Anaglyphic 3-D glasses.  

Tom DeSimone's Prison Girls is bad. I suppose it laid the groundwork for the director's own, superior, homage-y Reform School Girls made 14-years later. The adult side would be typical low-budget skin for the early 70's - although maybe a notch more sleazy. Lots of female nudity, group, one-on-one and non-consensual sexual activities, nasty assaults etc. The 3D (cited as 'the first 3D Adult film') is fun in its contrived specific usage and there is a huge grindhouse nostalgia if too much uncomfortable exploitation for this reviewer. The Kino Blu-ray might have a small niche appeal. I thought the commentary added a lot of value improving my viewing experience.

Gary Tooze