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Focusing Canon Lenses in BackyardEOS


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So I've checked functionality of lens focus motor control in BYE, and I am able to move the lens with the chevron buttons in BYE as long as the camera is in LIVE mode, the lens is in AF mode, and I'm in the Frame & Focus screen. The problem I'm having is that when I move the lens via BYE, the camera tries to autofocus the lens again as it does when it is first put into LIVE mode. I cannot find a way to stop the camera from correcting the focus changes I make in BYE. BYE control obviously does not work if the lens is in MF mode, but keeps trying to refocus when I have it in AF mode.  Is anyone aware of a way to tell the camera NOT to try to refocus the focus adjustments I'm making in BYE?  This occurs in both my T5i and T6i cameras, and with any of my AF lenses. Thanks for any help!!

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I think that the problem is that pressing the shutter button causes the camera to try to focus before taking the picture. If so, then there may be a Custom Function setting in the camera's menus to move the AutoFocus function off of the shutter button. With my T5i the settings is called "C.FnIV:Operation/Others" Shutter/AE lock button. The default setting is 0: AF/AE lock. Changing it to 1:AE lock/AF moves the focus button to the zoom- button. This does not affect BYE's ability to adjust the focus with the chevron buttons but camera no longer tries to autofocus when taking a picture.

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4 hours ago, astroman133 said:

I think that the problem is that pressing the shutter button causes the camera to try to focus before taking the picture. If so, then there may be a Custom Function setting in the camera's menus to move the AutoFocus function off of the shutter button. With my T5i the settings is called "C.FnIV:Operation/Others" Shutter/AE lock button. The default setting is 0: AF/AE lock. Changing it to 1:AE lock/AF moves the focus button to the zoom- button. This does not affect BYE's ability to adjust the focus with the chevron buttons but camera no longer tries to autofocus when taking a picture.

I must have another setting wrong - I've tried changing to AE Lock/AF, but the camera continues to refocus after I've made adjustments in BYE.  I'll continue to search for a solution - would be SO much easier if I could focus in BYE.

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Is there a way to run the focuser other than in live mode? When shooting through narrowband filters, live mode doesn't give a useful image for focusing. So far I've been able to hand focus with a series of preview images, but it would be very nice to be totally hands-off.

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5 minutes ago, rbroberts said:

Is there a way to run the focuser other than in live mode? When shooting through narrowband filters, live mode doesn't give a useful image for focusing. So far I've been able to hand focus with a series of preview images, but it would be very nice to be totally hands-off.

No, as far as I'm aware the focus motor can only be engaged through the SDK with the mirror is up, therefor liveview.

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