Digital Dental Photography

Digital Photography and Workflow for Dentists

Dental Macro Lenses

Important adapter for new Canon 100mm Macro

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I confess, I did not bother learning much about the new Canon 100mm f/2.8L IS macro lens that was introduced early in 2010 due to the significantly greater cost and the minimal increase in usefulness for dental macro photography.

Recently, however, I learned from Mike McKenna at Photomed.net, that the new 100mm macro does NOT have the little “lip” at the end to allow the Canon MR14-EX ring flash or the Canon MT-24EX Twin Lite flash to be added.  Why?  I have no idea, as such flashes are an integral part of many macro photographer’s gear.  In fact, I think it’s pretty stupid, but hey, I guess it’s just another way for Canon to squeeze a few more dollars out of you, because now you have to buy the Macrolite 67 adapter (see below) for another $32 or so if you do choose to buy the new version of the 100mm macro.

New Canon 100mm f/2.8L macro lens

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Canon recently announced upgrades to a number of their top lenses, and for pro photographers these should generally be welcome.  For dentists, however, there is one change that is not quite so good for one reason: the primary lens recommended for dentists and their teams, the Canon 100mm f/2.8 macro lens, has been updated to be an “L” glass (pros typically call their high-quality lenses “glass,” not “lens;”  just a little FYI).  What does this mean?

For practical purposes in dentistry, there is only 1 downside to this update, and that is that the new lens is more expensive than the previous lens by about $400, but without any real benefit.  Sure, the image quality will be even higher, the lens will focus a bit faster, but the previous lens was completely adequate for everything we needed to do.

Click here to see the new lens.

Now, if you are a serious photographer outside the dental office, this lens does offer (to my mind) 1 truly significant improvement over the previous incarnation: it is waterproof or very water-resistant when combined with a Canon 7D, 5D Mark II, or any of the 1D series cameras.  It is not water-resistant with any of the EOS Rebel series.

Due to this update, I am re-considering my usual recommendation to purchase the Canon 100mm f/2.8 macro for dental offices, and for cost reasons, many of you may want to look at the Sigma 105mm f/2.8 macro instead.  If you can get your hands on one of the older versions (still available at some stores) or get a used one, then definitely go for it.

How Many Megapixels Do You Need?

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This is one of those questions that always comes up when new photographers are asking what camera they should get.  When you consider how much the advertising for digital cameras seems to focus on the number of megapixels, it’s not really surprising, but still a bit unfortunate, because it gives the impression that one must have the camera with the most MP to keep up.

The truth of the matter is, when we’re talking about digital photography for dentistry, in particular, any DSLR since Canon came out with its Digital Rebel (6.3MP) back in ’03 has been totally adequate.

BTW – I still use the same 100mm macro lens that I bought with that Rebel back in 2004, so it may be reassuring to know that you won’t need to keep upgrading lenses every few years.That’s one of the keys to quality pictures that most people don’t understand: it’s more important to have quality lenses than a camera with high megapixel count for sharp, clear, colorful pictures.

So the simple answer to the question?  Any digital DSLR that has ever been made has more than enough megapixels, so don’t worry about that at all.  🙂

5 Good Cameras for Dental Photography

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Now to the real question: Which camera/flash/lens combination should I buy?

I’ll start off with what I think are simply THE standard lenses and flashes to get, as these won’t change much over time, even though the camera bodies will.

For Canon lenses (overall, more dentists use Canon than any other brand in my experience), you want EITHER the:

  1. Canon 100mm f/2.8 macro lens OR
  2. Canon 60mm f/2.8 macro lens

There is only 1 Canon ring-flash commonly used (while the twin-light flash is really nice, it’s trickier to learn and definitely more expensive), and that is the Canon MR-14EX ring flash.

For Nikon, the comparable lenses are:

  1. Nikon Telephoto AF Micro-Nikkor 105mm, OR
  2. Nikon Macro AF Micro-Nikkor 60mm

As far as I know (which is a lot less about Nikon that Canon, admittedly), Nikon does not make their own ring flash comparable to the Canon MR-14EX.  The one I’ve seen commonly recommended is the Sigma EM-140 DG TTL Macro Ring Flash for Nikon.

So does this mean that these are the ONLY combinations of DSLR lenses and flashes that you can get?  NOPE, not by a long shot!  However, they are the most common selections used by skilled dental photographers, and so….if you happen to need help from a colleague, it’s easiest to get help on these.  So rather than give out every single combination of lenses, bodies, and flashes that could be used, to keep it simple, these are the ones I recommend you consider.

Remember that the most important feature in the lens is it MUST BE A MACRO.  Otherwise, you will not be able to get close enough to the teeth to photograph them well.
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Now on to the Camera Bodies:

For Canon, as of today (12/18/2010), I recommend the Canon T2i for 1 very simple reason: not only does it have all the nice features necessary to take high-quality pictures, it ALSO has 1080p HD video recording capabilities.  And with the Internet rapidly becoming a major force in reaching both new and existing patients, video can be a powerful tool for influencing them; follow this link to see some of my patient testimonials on YouTube! The sheer convenience of having both a video camera and a DSLR in 1 is just too nice.  And, if you happen to be a microscope-using dentist (which I also highly recommend), you can hook up the T2i to your camera adapter and record both video or still images.
Of course, you can also use any of the following Canon camera bodies: 10D, 20D, 30D, 40D, 50D, 60D XT, XTi, XS, XSi, or even go really upscale with the Canon 5D, 5D Mark II, or 7D.  However, I don’t recommend those because of the price.

For Nikon, I recommend the (for the same reasons as above) Nikon D5000 or the D90.  If those don’t float your boat, you can choose any of the following (just be aware that none of these have the video either): D40, D60, D80, or D200.  Again, if you want upscale, go for the D300s or D700.

OK, if you count up all those possibilities, you’ll realize that’s actually WAAAAAAY more than 5 possibilities.  I’ve given you the criteria I use when recommending, though, so you should be able to make your choice.  If not, please ask questions!

I’ll cover some of the alternative DSLR camera bodies, lenses, and flashes in a future post.