cars motion blur

tecboy

No longer a newbie, moving up!
Joined
Feb 17, 2012
Messages
2,977
Reaction score
358
Location
San Jose, Cali, The Heart of Silicon Valley
Can others edit my Photos
Photos OK to edit
I tried to shoot pictures with a bunch of cars going as motion blur while sharp image in the background. It was in a sunny day, so I get faster shutter speed. How can I get a very slow shutter speed like about 8 seconds with the right exposure? Tips anyone?
 

fokker

No longer a newbie, moving up!
Joined
Jun 23, 2009
Messages
2,829
Reaction score
295
Location
New Zealand
Can others edit my Photos
Photos OK to edit
A CPL (polarizer) filter will also help out by cutting about 2 stops of light.

If it is not a very bright day (most likely evening or morning), you may be able to get away with just using the lowest possible ISO setting and stopping the lens right down to f/22 or whatever the minimum aperture is.
 
OP
tecboy

tecboy

No longer a newbie, moving up!
Joined
Feb 17, 2012
Messages
2,977
Reaction score
358
Location
San Jose, Cali, The Heart of Silicon Valley
Can others edit my Photos
Photos OK to edit
A CPL (polarizer) filter will also help out by cutting about 2 stops of light.

If it is not a very bright day (most likely evening or morning), you may be able to get away with just using the lowest possible ISO setting and stopping the lens right down to f/22 or whatever the minimum aperture is.

I tried higher f-stop and ISO 100 and still get faster shutter speed. The image is like frozen in times. I will try evening or morning with CPL.
 

michaeljamesphoto

TPF Noob!
Joined
Dec 15, 2011
Messages
71
Reaction score
9
Location
California
Can others edit my Photos
Photos NOT OK to edit
I would strongly discourage shopping at Best Buy. I'm amazed they even have Tiffen, last time I passed through they had "Rocketfish" filters, made me shudder
 

molested_cow

TPF Supporters
Supporting Member
Joined
Jul 3, 2004
Messages
3,714
Reaction score
531
Location
Here N There
Website
img24.photobucket.com
First of all, 8 seconds is quite unrealistic for the kind of shot you are looking for. You won't even be able to get a still image of the car itself. Even if the camera is mounted on the car, there will still be vibrations. I think a fraction of a second is adequate.

Like others said, an ND filter will work. I have ND 8 filter (3 stop reduction) for waterfall shots. On sunny day condition, I find that it will barely give me what I want. It would be like F13 @ 1/30 @ ISO100 or something, which I find is not slow enough for nice silky-looking waterfall.

So, I will recommend experimenting with settings to see what suits you.
For example, on a typical sunny day, you will shoot with say 3-stop less to simulate ND8 to see how the background blurs. It will be over exposed, but what you need to know is if the blur effect is good enough for you. You can then try 4-stops less to simulate ND16 and such. Also, take note of the room of ISO and aperture settings you are willing to work with. For example, if I am taking landscape shot, I will want to shoot at F8-11 and ISO200-400. For something like a moving car, perhaps F4-8 at ISO400-800. The resulting ideal ND filter type will be different then.
 

Most reactions

ClickASnap

New Topics

Top