custom aspect ratio adjustment is very limited

[bluedan]

Custom aspect ratio does not accept decimals, so I was not able to type in 2,35:1.
The , was refused, also 1,85:1 is impossible to do.

[xlv600]

I've never used this, but I think you can use 235:100 or 185:100 to avoid decimals.

[Quietseb]

never used it either ;) , but I'd try 2.35:1 (dot instead of comma)