7D and Canon 2xTC and Taped Pins

[Dave Leroy]

If I tape the pins on the TC and then do a microadjustment, will that microadjustment affect the already saved ma for my 500mm f/4? or How does the 7D know which ma to use if it does not know the TC is there?

[Alan Stankevitz]

Hi Dave,

If you tape the pins, the camera is unaware that there is a TC in place and it will think the microadjustment is for the 500mm w/o the TC. This is one of the drawbacks of tricking the camera into not recognizing a TC.

Alan
www.iwishicouldfly.com

If I tape the pins on the TC and then do a microadjustment, will that microadjustment affect the already saved ma for my 500mm f/4? or How does the 7D know which ma to use if it does not know the TC is there?

[Dave Leroy]

Thanks Alan.

[brian simpson]

Hey Dave Does your 7D AF with a 2x tc (taped pins) on a 5oo f4 ,,,thanx

[Dave Leroy]

I have not tried it, and since I like to microadjust I probably won't. I will use it with Live View and auto focus that way, or focus manually.