- Edited
I beg to differ. Maybe I could have put it more precisely: the place of a note on the page is associated with a particular position on any string on which it can be played. Of course this position is different depending on the string in question.
I used to be a cellist, and I can still feel my reflexes when I look at cello music: if I see a certain passage that could be played either on the D or the G string, for instance, I will instantly feel where my left hand should go, depending on which string I had decided to use for the passage.
The important thing is this: if I see 8va written above that passage, I don't instantly know where those notes are on any particular string. The best thing for cello is to use one of the other clefs: the tenor clef has the wonderful property of being set exactly a fifth above the bass clef, and the bottom line of the treble clef is a fifth above the top line of the bass clef: for an instrument tuned in fifths, this is most convenient. But often it's better for the continuity of a phrase not to change clefs in the middle. An 8va sign also beaks the continuity. In this case, I prefer ledger lines.
pseudonym58 I worked as a full-time professional cellist in opera and symphony orchestras, and the violinists would often bemoan the ridiculous number of ledger lines.
It's interesting how our experiences differ. I was a Kapellmeister in various German opera theatres for many years and the violinists usually hated 8va signs. A particular case in point: in 2004 I was conducting rehearsals for Crazy For You and the violins were having trouble with a particular passage because of the changes between ledger lines and 8va. I asked the concertmaster if they would be happier if I wrote out all the passage with ledger lines and no 8va signs – he said that they most certainly would be, so I did just that and was warmly thanked for it. I've kept that page: here it is!