Custom camera preview

A custom camera does not replace the main view. It renders an OutputTexture that the module displays like any other texture.

local Preview = Cameras:CreateCamera()

if Preview == nil then
    print("Camera limit reached")
else
    Preview:SetRenderSize(320, 180)
    Preview.Aspect = 320 / 180
    Preview.Fov = 60
    Preview:SetActive(true)

    Scheduler:OnFrame(function()
        local main = Cameras.Main

        if main == nil then
            return
        end

        Preview.Position =
            main.Position + Vector3.new(0, 2, 0)
        Preview.Rotation = main.Rotation

        if Preview.OutputTexture ~= nil then
            ImGui:DrawTexture(
                Preview.OutputTexture,
                Rect.new(20, 20, 320, 180)
            )
        end
    end)
end

Freeze the image

Preview:SetActive(false)

The texture keeps its final frame while rendering stops. SetActive(true) resumes updates.

Removal

if Preview ~= nil then
    Cameras:RemoveCamera(Preview)
    Preview = nil
end

Do not use the previous reference after removal.

Caution

Do not move Cameras.Main for an independent view. It also drives the regular view and hand model, and the game may overwrite it on the next frame.

Reference: Camera, Texture, and ImGui.