Standard Definition or High Definition
[...] But whether you transfer to either High Definition or Standard Definition, there are some other things to consider. The aspect ratio, that is the "shape", of HD and SD is totally different. SD is 4:3, while HD is 16:9 in proportion. But home movies have a totally different "shape" and it fits neither SD nor HD ideally. And here's the bigger surprise: Even if you project the original film in your living room using Grandpa's old Brownie projector, you STILL don't have a perfect "match" for the original film frame!
As seen in example "A", there is considerable cut-off due to the undersized gate on the movie projector. This made production of the projector easier but at the sacrifice of much detail that exists on the outer edges but never seen. Example "B" shows how much more is revealed in an enlarged gate 4:3 transfer to Standard Definition video. [...]
And that's just one of several things to consider. Check out their "B" and "D" options, and other things they have to say about SD vs HD. Follow the link, I would say this is a MUST READ if you are considering having your films transferred to video or archived to a digital format.
And be sure and visit the MovieStuff homepage, and explore their website. It's easy to navigate, and very informative.