iPhone 8/Plus Iphone 8+ 2x camera issue with scope

[mintakax]

I frequently attach my iPhone to a spotting scope (using a holding adapter) to take pics and vids of birds. It's a bit of a pain to line up the optical axis of the camera with the optical axis of the scope, but once it is set, it is good to go. I've recently replaced my 6+ with an 8+ . Using the 1x lens with this setup is fine, but whenever I use the 2x lens, within 1 sec of lining up the axes, the screen goes blank. Switching to 1x then back to 2x brings up the picture, but 1 sec later it goes blank. I know the axes are lined up because for that 1 sec, everything looks fine. Any ideas what is causing this problem ? It happens for both photo and video. The 2x lens works fine in non-scope situations.
I'm thinking its something in the camera app itself ?

 

[Adam.Kb2Jpd]

I frequently attach my iPhone to a spotting scope (using a holding adapter) to take pics and vids of birds. It's a bit of a pain to line up the optical axis of the camera with the optical axis of the scope, but once it is set, it is good to go. I've recently replaced my 6+ with an 8+ . Using the 1x lens with this setup is fine, but whenever I use the 2x lens, within 1 sec of lining up the axes, the screen goes blank. Switching to 1x then back to 2x brings up the picture, but 1 sec later it goes blank. I know the axes are lined up because for that 1 sec, everything looks fine. Any ideas what is causing this problem ? It happens for both photo and video. The 2x lens works fine in non-scope situations.
I'm thinking its something in the camera app itself ?

More like the design of the camera sensor. You need light to enter both optics. It then does its magic to the image.

 

[ZEEN0j]

The phone switches back to the normal lense when the lighting isn’t good for the tele lense. Basically a digital zoom instead of optical. Try another app where you have more control. I’d suggest halide.

 

[mintakax]

Thanks you two ! That all makes sense. I'm going to try halide.

 

[mintakax]

Halide solves my problem for photos with the 2x lens, but it does not do video. Can anyone suggest a camera app that does video and allows independent use of the 2x lens ?

 

[fred98tj]

FiLMic Pro is, by far, the BEST video app out there. It’s professional grade. Allows even filming in flat gamma and log gamma.