16mm and 35mm in minutes and seconds

[williammcgregor]

Can any forum member answer the following questions?

During the 1950s and 1960s, how long was 100 feet of 16 mm in terms of minutes and seconds; as used
by ITV? and the same for 1000 feet of 16 mm?

Similarly over the same 2 decades, how long was 100 feet of 35 mm in terms of minutes and seconds? and
also 1000 feet of 35 mm?

Would the 16 mm and 35 mm used by the BBC in those decades have been the same length in terms of minutes and seconds? or slightly different to ITV?

The answer to those questions might be a great help to us and everyone else, when working out if an episode exists
complete or how much it exists as incomplete, or how long a clip is etc, etc..

Thanks
William

[Mark Tinkler]

Let Google be your friend ) www.scenesavers.com/content/show/film-footage-calculator

UK film runs at 25 fps - BBC & ITV Speeds would be the same. Have a play with the above link to see what the answers to your questions are...

[williammcgregor]

Many thanks Mark
I had that little play as you suggested and came up with these answers; do they look about right to you
please?
16 mm 100 feet......2 minutes and 40 seconds
16 mm 1000 feet......26 minutes and 40 seconds
35 mm 100 feet......1 minute and 4 seconds
35 mm 1000 feet......10 minutes and 40 seconds

Thanks also for confirming that both ITV and BBC would have been the same ratio footage to minutes and seconds.

[Mark Tinkler]

(sorry for delay but been aware with no internet - bliss!)

You'd have more luck looking at the size of the film cans to be honest - reels of 35mm tended to last about 12-15 mins as that's what the cans held for features, but bigger cans for BBC films. 16mm reels could easily hold half hour programmes with one hours on really big 16mm spools or split into 2 halves.

[williammcgregor]

Many thanks Mark