Masks are of little use if you have to manually position the film for every frame. .......
Thanks, important point indeed. I've talked about that today with my local professional lab. They have five different scanners for different purposes, including the Noritsu HS-1800. They told me 24x24 might work with a dedicated mask and dedicated coding. But of course that must be tested, difficult to evaluate in theory.
So, let's assume the "worst case":
Thesis: It is neither possible with the SP-3000, nor with the HS-1800.
But good labs are already operating different scanner types for different applications and customer needs for many years. That is nothing new for established labs.
And we have new developments in the market as well, like the Aura 35:
https://auralab.photo/
From the description scanning 24x24mm should be possible without problems.
And then there is also the option of camera scanning: Would be very affordable even for very small, newly established labs. Scanning is slower compared to scanning of 35mm with a HS-1800 or SP-3000, but it would be fast enough to offer scans at a reasonable price.
I think to give the film market new impulses, fresh stimulus, we have to increase the number of options and alternatives for (potential) users.
A square format 24x24mm based on standard 35mm film would be such an option. It would improve the versatility of the by far most used film type, 35mm film. It would be attractive both from an aesthetic point of view, and like halfframe also from an economical point of view (more photos from a 135 film).
The cheap plastic halfframe cameras like the Kodak Ektar H35 are very popular, and that was a signal seen by Pentax, and confirming to them that halfframe would be accepted in the market.
If a camera manufacturer now would introduce a 24x24mm square format camera, and customers show demand for it, that would also be a signal to others also entering that market. And further improved scanning options would follow, too.
Best regards,
Henning