Rigidly mounting an odd combination: T2i + 85L f/1.2

[conropl]

I'm shooting in live view as that's the way I have to focus. However, I can clearly hear the mirror slap. I'll pull the lens and verify that the mirror is, in fact, moving up and down. Obviously the shutter must still fire but that's not a lot of vibration - though it would be a simple matter to make an external shutter. However, I don't think I can hack my T2i to still expose when the shutter is disabled and open.

You could not be getting a live image on your LCD if the mirror was down, the mirror would block the sensor if it was not up. You must be hearing the shutter.

[ChadS]

You could not be getting a live image on your LCD if the mirror was down, the mirror would block the sensor if it was not up. You must be hearing the shutter.

I just confirmed (by removing my lens and looking at the mirror) that the mirror returns to the lowered position after the shot is exposed briefly before returning up. Why this is, I do not know and perhaps other bodies behave differently. And it happens after the exposure so most people would not notice the mirror slap as moving the camera for the image. However, since I'm planning on shooting a thousand or more photos from one fixed position the cumulative effect of having the mirror slap the housing could add up.

Anyone really know how to drive the USB commands outside of the documented set? I'd love to park the mirror up and leave the shutter open and yet still turn the sensor on and off when I hit the trigger. I could easily add an external shutter that's far more reliable than the one in my camera. Thanks!

[Dr Croubie]

ps also, with that manfrotto-mount i suggested earlier, it does have a 'minimum lens-body distance' if you didn't see that. A few seconds with a hacksaw can shorten the front-plate so that it slides further back, so that shouldn't be an issue...

[jrw]

Anyone really know how to drive the USB commands outside of the documented set? I'd love to park the mirror up and leave the shutter open and yet still turn the sensor on and off when I hit the trigger. I could easily add an external shutter that's far more reliable than the one in my camera. Thanks![/QUOTE]


Have applied to get the SDK to allow creating a custom sample imaging device, with MPE-65, with a unique interface for a grad students research project. Microscopes available use too small a sensor and the results of shifting and stitching images change the grayscale values too much for the bitmap conversion and subsequent image analysis.
The purpose of the SDK Canon provides is to allow programmers to create custom software to use in tethered operations. Might be something you want to look into. Language of source code is MS C++ 6.0

JRW