1
$\begingroup$

Does anyone know how can I change my camera's focal length interactively, in the 3d viewport, (while looking through the camera)? I'm not looking for the "lock camera to view" feature, just so you know! I'm looking for the real zoom of the camera change/perspective "distortion"...

enter image description here

$\endgroup$
  • 3
    $\begingroup$ Could you specify what you mean by saying "interactively"? How is that different from changing the value in the lens panel? $\endgroup$ – Carlo Mar 20 '17 at 22:42
  • $\begingroup$ @Carlo There's a shortcut to change the focal length live, without touching the panel. I'd like to be able to do it. Of course you can always go to the panel, change, check if it's good, go back to the panel, change, check if it's good, specially if you're working in fullscreen mode... ;P $\endgroup$ – prubini87 Mar 21 '17 at 0:17
  • $\begingroup$ Thanks! Now is clear. Are you interested change the parameters while in fly mode? $\endgroup$ – Carlo Mar 21 '17 at 0:28
6
$\begingroup$

With your camera selected press W > Camera Lens Angle

enter image description here

Then move your mouse left/right.

$\endgroup$
  • $\begingroup$ Thanks, that works, but it's still nto what I'm looking for. I mean, what it does is exactly what I'm looking for but I know there's a shortcut that skips this "w" menu... I'm looking forward to remembering what shortcut it is! I know that I need to have the camera selected and then, press something. No menus will show up but the ability to move the lens forward and backward will be active/activated. Thanks anyways @Jerryno! $\endgroup$ – prubini87 Mar 22 '17 at 3:51
  • $\begingroup$ @prubini87 Then press WC, that's the direct shortcut :) $\endgroup$ – Jaroslav Jerryno Novotny Mar 22 '17 at 8:03
  • $\begingroup$ Thanks @Jerryno but that's still not it! $\endgroup$ – prubini87 Mar 22 '17 at 20:53
  • $\begingroup$ I suspect the question is about a Dolly-Zoom rig like this: blendswap.com/blends/view/73233 $\endgroup$ – cegaton Feb 28 '18 at 1:38
  • $\begingroup$ Looks that @prubini87 wants to remember the shortcut but... there is no one. I think that this answer can be improved just by explaining how to add a shortcut there (right-click>Add shortcut). The "F" is free and stands for Focal Lenght. $\endgroup$ – Antonio Buch Mar 22 '18 at 15:30
1
$\begingroup$

Right click that focal length button in the Shift + F7 Properties and set up one f-curve, then in the Shift + F6 Graph Editor, set up your desired lens shift (vertical scale) vs time (horizontal scale).

You could have a wide angle 15mm & 150mm telephoto on just 2 frames, (flipping between them with the arrow keys); or have a whole focal length transition that you play forwards (Alt + A) or backwards (Shift + Alt + A).

Difficult to stop that 2nd setup looping though.

It's fun to watch the (real) camera contorting lengthwise through one of the virtual cameras (Numpad 1,Numpad 3,Numpad 7 etc). It's also useful for controlling the size of the fly-mode 'dock', which has a freekish dependence on the active real camera's focal length.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.