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Nikon SDK - Get arbitrary position of lens

Hey all =) Seems like a handy place for my question, so here goes. Bear with me!

I am using the Nikon SDK to talk to a D700 with a 60mm macro lens, using windows and visual c++. So far all is well. I can get and set most values, and do everything I need to do (look at me go). One thing I can't seem to figure out is how to get and set an arbitrary focal position. I know how to manually focus the camera using the MFDrive stuff, but this is a relative position. As an example, let's say that I have the lens focused all the way 'out' (to infintiy, and beyond!). We could call that position 0. I then focus all the 'in' (close as possible), and we could call that position 32767 (signed short, just as an example).

As another example, imagine that I have trigger Auto Focus, and the camera focuses itself appropriately. For the sake of argument, we'll say it gets it spot on where I want it, and had no issues like focus hunting. I want to know the value of that specific position, so that if I were to send commands to the stepper motor to +/- the zoom level beyond that, there would be a way for me to return to that magical initial value.

Hopefully that all makes sense and there's a fellow geek out there who can help =)


Thu, 07 Oct 2010 23:32:40 +0000

How did you implement the SDK into your code?

Fri, 14 Jan 2011 10:25:21 +0000

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