Newb question: value of having lenses with the same filter size

[Tin Can]

Also these are good sometimes

LEE Filters Gel Snap (4x4" Filter Holder) for Lenses up to 82mm

[John Layton]

Thinking in terms of logistics...it makes sense to have filters in the largest size you need - then equip each other lens with the appropriate step up rings and lens caps to match - so when out in the field you can omit lots of fiddling around with various adapter rings, etc. But I haven't quite gotten there yet...and continue to mess around with various step up rings in the field. Eats up way too much time - and I need to change this!

And the thing about adapter (step up) rings...these really need to be the more expensive brass versions - as the cheaper aluminum ones tend to bind up and become impossible to remove.

[dpaqu]

Also these are good sometimes

LEE Filters Gel Snap (4x4" Filter Holder) for Lenses up to 82mm

That might be a good light weight setup for GND filter on a otherwise circular filter system.

Thinking in terms of logistics...it makes sense to have filters in the largest size you need - then equip each other lens with the appropriate step up rings and lens caps to match - so when out in the field you can omit lots of fiddling around with various adapter rings, etc. But I haven't quite gotten there yet...and continue to mess around with various step up rings in the field. Eats up way too much time - and I need to change this!

And the thing about adapter (step up) rings...these really need to be the more expensive brass versions - as the cheaper aluminum ones tend to bind up and become impossible to remove.

Why not just go for a 100mm square filter system?