BebuLamar wrote:
The Yashica dental eye has 100 f/4 macro with built in ring flash. So a 100 mm lens for FF and may be 50mm lens for APS-C.
I teach intra-oral photography at the university where I work*.
Back in the film days, we had 3 Yashica Dental eye cameras with the 100mm lens.
Awesome camera! If it was in focus, it was exposed correctly.
(They made a version with a 55 or 60mm lens too.)
We use Canon T5's now with the Canon MR-14 ringlight.
For full-frame, a 100 works well, anything longer makes it hard to get a full arch and a few other views, as you are so far back the lips can get getting in the way and if you want full-face, flash power from the ringlight is significantly reduced. For APS-C, 100mm-ish works, but something shorter like a 60 for Canon is ideal (works out similar to a 96mm on full-frame).
If you are after just single teeth or maybe just a few like a periodontist would want, that's not as big an issue.
I would love to see a kit with a micro-4/3rds hit the market.
The smaller size would make it easier for staff to handle, image quality is more than enough too.
Unfortunately, the ringlights are still pretty big and it makes them unwieldy.
Metz makes the
15 MS-1 which is supposed to work with Olympus/Panasonic, but I don't have access to that system to try it.
Check out
Lester Dine (they invented the ring light)
and
PhotoMed for more info on what they sell.
Both sell DSLR kits and adapted point & shoot models.
Of course, there are wand cameras, but that's another whole ball of worms and not something I deal with.
*(got a lay-off notice last week so...early retirement for me!)