How is this done?

dugmar · August 3, 2006

Is this purely DOF or is there another way to make the front of the car out of focus while keeping the back of the car in focus?

http://www.wesduenkel.com/Galleries/Gallery_060728_GAC_Barber_Full/pages/060728_0028.htm

Curious...

JBurt · August 3, 2006

dugmar wrote:

Is this purely DOF or is there another way to make the front of the car out of focus while keeping the back of the car in focus?

http://www.wesduenkel.com/Galleries/Gallery_060728_GAC_Barber_Full/pages/060728_0028.htm

Curious...

DOF or the front of the car was moving at a different speed than the back relative to the camera. (ie going around corner or in a drift.) The front looks like it has some motion blur, so I suspect different speeds.

It can also be done in the computer. I did this for a challenge on another site. In PSP using a motion blur on different layers and erasing portions.
http://www.pjburt.com/images/robin.jpg

DoctorIt · August 3, 2006

I'm gonna go with dumb luck.

Aaron Bernard · August 3, 2006

This shot below was at f8 so I had plenty DOF. Like what JBurt said, part of the car is taking on some of the motion blur due to different speeds or turning.

In my case I was tracking my pan on the front of the car. How you perform your pan will affect the blur of the image.

wxwax · August 3, 2006

It's not depth of field. It's motion blur.

As the camera tracked the motion of the car, the tracking only matched the rear end of the car. So that's the only part that's in focus.

I've done it myself, by accident.

DoctorIt · August 3, 2006

Sid, your jeep is giving me vertigo!

dugmar · August 3, 2006

Thanks guys!

wxwax · August 3, 2006

DoctorIt wrote:

Sid, your jeep is giving me vertigo!

For a plain Jane shot, I've always liked it! I sat on that curve for about 45 minutes one afternoon commute and shot the cars as they came around the curve. They must have wondered what was going on.

mercphoto · August 3, 2006

FastScan wrote:

This shot below was at f8 so I had plenty DOF. Like what JBurt said, part of the car is taking on some of the motion blur due to different speeds or turning.

In my case I was tracking my pan on the front of the car. How you perform your pan will affect the blur of the image.

Car can be in a turn and cause that, or coming at you at an angle, or a few other things can cause this effect. Plus editing, of course. As per panning and f/8 I wanted to bring up that, IMO, a good panning shot requires great depth of field. Notice in FastScan's photo how crisp the horizontal edges are in the blurred background. You want that, you want crisp horizontal edges and motion-blurred vertical edges. You cannot get that if you have shallow depth of field. You need an in-focus background to get those crisp edges.

How is this done?

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