To tune by ear or not by ear, that is the question..
Since I was a kid I learned to tune my violin the traditional method, by ear. Basically I use a 440 Hz (A) tuning fork. I tune the A string to the fork (or oboe if I'm sitting in the orchestra) and then tune all the other strings from there.
A couple days ago I decided to give in and order a chromatic electronic tuner. It's made by a brand called "Snark", For ten bucks on Amazon I couldn't resist the temptation. The particular one I ordered is good for bass, guitar and violin and it will basically display any note you play. The nice feature is that it is designed to pick up vibration, so you simply clip it on to the scroll of the violin (or headstock of the guitar), play the open string and displays the note you are playing and tells you if you are sharp or flat and, if so by how much. What makes this type of tuner nice is that you can use it in noisy environments, like in the recital hall when others are tuning horns, trumpets, and other stings. Since it is chromatic you can also use it while you're playing to get an idea of your fingering and intonation.
So far I tried the tuner and it works. I also discovered that I am pretty good tuning the traditional (by ear) way as my strings were pretty much spot on, or slightly sharp which is really no problem.
Now here's the catch. Despite the ease and seeming accuracy and low cost of modern electronic tuners I think it is still invaluable, especially beginners and intermediate players, to learn to tune by ear and not become entirely dependent on electronics. IMHO Tuning by ear helps to develop a critical ear which is of critical importance in developing good intonation. In that way I do feel a bit guilty using the electronics. However, on the other side of the coin if used properly the electronic tuner (and particularly chromatic electronique tuners) can be an asset to helping develop a good ear. So I see pluses and minuses to both. Since there are other musicians who frequent this forum I wonder what your thoughts might be on this.
Incidentally this is the tuner I purchased, for the price I figured what the heck.
http://www.amazon.com/Snark-Guitar-V.../dp/B0073XCYO2
and for more into SNARK has it's own website..
http://www.snarktuners.com/