While I've never been to a 18fps telecine session, I'm sure that you can have that transferred to video where the playback will be at the correct speed and without additional flicker.
I've been to a professional telecine session and I can assure you that transferring 8mm film to look decent requires mid to high-end equipment.
Using high end equipment is exactly what I recommended.
I'm not sure what you're referring to as the "professional telecine session" that you attended, but ALL real telecine sessions DO have high-end equipment. If you find a place with anything that you'd consider low-end equipment, you're not at a professional telecine session.
I talked to them when I was getting 16mm film transferred to video and they reckon the best way to do it with a video camera is to use one which has progressive recording capabilities (480p, 576p or 720p). These are pricey however but can be rented cheap.
I can assure you that "pricey video cameras" have nothing to do with Telecine at all. Get a real telecine on a Rank and it'll look fine. Anything that involves video cameras is NOT a professional telecine session, no matter what you've been told. And if your "professional telecine session" included advice about using video cameras, you were at the wrong place.
Also 3:2 pulldown-like methods won't work with this because of the film frame to interlaced frame ratios.
First off, I didn't suggest he use 3:2 pulldown to transfer his 18fps film to tape. You made an erroneous comment about having to slow it down to 15 to successfully transfer the film to tape "so each frame can be doubled up" You seem to believe that the frame rate of the film must match the video frame rate or be 1/2 of the video frame rate so it "can be doubled up". You are wrong and, as a very basic, done-every-day, seen-on-tv-every-night example of how this belief is incorrect, I referred to transferring 24fps film to 30fps video using 3:2 pulldown.
If you understand what 3:2 pulldown is, then you would clearly know that the film frame rate does NOT have to be 1/2 the video frame rate and you would not say something like "they'd have to slow it down to 15fps so that each frame would be doubled up".
Secondly, of COURSE a "3:2
pulldown like method" could work in the exact same way that a 3:2 pulldown works for 24fps transfers. 3:2 distributes every 4 film frames across 5 video frames. For 18fps, it would just have to distribute 3 film frames across those 5 video frames.
Unless he slowed the footage down to 15fps, he won't eliminate the flicker.
You are wrong wrong wrong wrong. Go to a professional post house, as I suggested, and you can have 18fps transferred without any flicker at all and no speed problems.
Hell, if you wanted to, you could shoot something at 64fps and transfer it at 12fps onto an NTSC 30fps video tape. People do stuff like that all the time. You still wouldn't have any flicker introduced because of the frame rate, nor are you required to slow-down or speed-up anything that you didn't want to.