In update 1.71 New E.R.A. we implement new camera view for the defensive turret for more than 50 aircraft with one gunner position. The view has been moved as close to the weapon as possible, thus parallax effect is reduced. This view mode is enabled by default, but you can switch back to classic view in the settings.
https://static.warthunder.com/upload/image/!%202017%20NEWS/09%20September/Gunner%20View/1_35d9fde93218022eb8c26b1755849c09.jpg
https://static.warthunder.com/upload/image/!%202017%20NEWS/09%20September/Gunner%20View/3_e2d0401f46a2260e908a5e12a676686c.jpg
https://static.warthunder.com/upload/image/!%202017%20NEWS/09%20September/Gunner%20View/2_0d53f298b1349779a63f307c6228bb16.jpg
https://static.warthunder.com/upload/image/!%202017%20NEWS/09%20September/Gunner%20View/4_ba3330360e6a3c9dae3b7726a29e6469.jpg