I feel Jack's pain, but this isn't anything new or something specific to the EOS 10D. That's the reason that Canon pro cameras don't have an internal flash (and I'm not talking about just the digital). When I saw the 10D had an internal flash, I realized that they had focused it more to prosumer and consumer. They then put the 300D (Digital Rebel) out which is squarely aimed at the consumer and, from the look of it, has a much higher flash placement than any other Canon EOS camera (though I don't know if it's high enough to clear the big lenses like the 24-70L). With their cameras with built-in flash, I think they made and have always made, the assumption that it was fine. Normal consumers would buy their normal consumer lenses which don't have a problem. If high-end/prosumer users would be paying $1200-4000 for L glass, they'd be using an external flash anyway. Good assumption? Bad assumption? I dunno. I've never use an internal flash on any camera (I can't imagine using a flash that close too and parallel with the viewing axis of a lens, but I dunno what that says - if anything. For the 10D, you have the following options: 1) Canon Speedlights - 550EX (high end) ~$320, 420EX (middle) ~$180, 220EX (low) ~$100. 2) Metz 54MZ series flash with an SCA 3002 series Canon adapter (high end). ~$385 3) Sigma EF-500 DG Super (middle to mid-high end) ~$190. EF-500 DG ST (middle) ~$130. 4) Any "Auto Program" flash - one that has its own sensor and uses that to base the flash exposure on - can be used with the 10D (since it doesn't talk to the camera to figure out exposure). They range from $50-$500. Be aware that the trigger voltage on the flash should be 6Vdc or lower or you risk damaging your camera (there are some old flashes that have trigger voltages in the hundreds of volts). Those prices are new. If the internal flash was all you needed, then I'd look for a used 220EX. Should be able to pick one up for under $70 and it has the functionality of the built-in flash with more versatility and I believe more power. I'm still deciding on which flash I want to get (550EX or Metz 54MZ3). In the meantime, when I know I'll need things like high-speed sync (flash sync up to 1/4000th sec) or other features that have tight integration to the camera, I'll just rent a 550EX. Otherwise, I use my faithful old Cullmann CX35 auto-program flash that I picked up for $60 back when I brought my EOS 630. -=>Donald