http://tokyocamerastyle.com/post/71189873522/announcing-part-2-of-my-tokyo-photo-travel-guide
http://www.japancamerahunter.com/2013/05/the-complete-tokyo-camera-shopping-guide/
I was in Tokyo for 8 days last year... great city! Lots to see. Easy to get around by rail/subway (I have no idea about driving there). There's sufficient English signage to get by on the subway, but rural bus services could be more challenging. Here Google Maps will be your friend... though IIRC, my phone didn't work there. I was traveling with my GF and we rented a mobile wifi hotspot device for portable internet access (you can get these at the airport when you arrive). She is native Mandarin speaker. Between my English and her Chinese (because some Japanese characters have similarities with Chinese), we were able to figure things out, like restaurant menus. Eating out can be a bit of a challenge because most of the restaurants we tried were not necessarily geared towards foreign tourists and usually didn't have English menus. But most had illustrated menus. Don't count on store staff, servers, etc. being proficient in English, even at a basic level, though the staff at the camera stores I visited were OK (Yodobashi and Map Camera).
We stayed with friends, so didn't have to spend on a hotel, but I felt restaurant prices were similar to larger, costlier American cities. You can eat cheap there, with decent quality, if you look around. However, if you want quality sushi, sashimi, wagyu beef, etc., you will pay for it.
I don't shoot film, so can't comment there. Some of the camera gear at that time (when the exchange was much better at 125 JPY to the USD) was substantially less than in the US, particularly Zeiss and Voigtlander lenses, but other gear was very similarly priced. If you're into buying used, particularly older, harder to find equipment, Tokyo will seem like paradise. Huge selection and often in very good condition. Some places are not necessarily bargains, but those apparently can be found with some legwork.
If you have the time, I would definitely recommend the visit, if anything, as a contrast to what you'll experience in other Asian countries and large cities.
