Nokia Lumia 1020 users who want maximum performance from the 41MP camera on their devices will need to make a decision between running the Windows 10 Mobile preview or reverting back to Windows Phone 8.1 like Tony Redmond did last week.
In today's announcement of the release of Windows 10 Mobile build 10536.1004 to Windows Insiders Gabe Aul acknowledged the quality issues 1020 users have been reporting while on the test builds of the pre-release operating system.
Unfortunately, the quality issues will remain for the foreseeable future until the Lumia Camera app is upated. The app is compatible with Windows 10 according to Aul but it will not be available for download until this fall.
"To get all your Lumia 1020 camera features back, you need the Lumia Camera app installed on your phone. The easy solution is to wait until the app is available in the Store. If you don’t want to wait, you need to use the Windows Phone Recovery Tool to return to.1 in order to get the app back."
I am not so sure that Nokia Lumia 1020 users will view the easy solution as an acceptable recourse to not being able to use their hardware and test Windows 10 Mobile.
Aul did also confirm that this issue only effects 1020 users so if you have any other Lumia device just use the default Windows Camera app.