Enthusiast
Hi all,
I made these shots yesterday with a 70-300mm with shutterspeeds around 1/100- 1-160. I had media accreditation so I was quite close to the track. The aperature was F11.
The problem with these shots is that only the nose of the car is focused while the rest is blurred. What should I do to solve this problem?
FERRARI RULEZZZ
Supporting Admin
That's good stuff. Hardly a problem. If you want boring shots with everything in focus you should hike the shutter speed to 1/250 or 1/320.
If you should see a man walking down a crowded street talking aloud to himself, don't run in the opposite direction, but run towards him, because he's a poet. You have nothing to fear from the poet - but the truth.
(Ted Joans)
Enthusiast
Thanks Wouter. I quite like the effect too, but was just wondering how to get the whole car sharp. So I can do it by shorten the shutterspeed or maybe make the distance between the subject bigger?
FERRARI RULEZZZ
Supporting Admin
It's all in the shutterspeed. The effect does get bigger when you are closer to the car. Here is a 1/60 example of your 'problem'.Originally Posted by Fumacher
If you should see a man walking down a crowded street talking aloud to himself, don't run in the opposite direction, but run towards him, because he's a poet. You have nothing to fear from the poet - but the truth.
(Ted Joans)
Enthusiast
At 1/60 the effect is indeed bigger. I really like that effect! Thanks for your explanation WouterReally appreciate it.
Edit: just saw your entry in the photo comp. At what shutterspeed did you made that shot?
FERRARI RULEZZZ
Super Moderator
hmmmm .... the problem isn't REALLY in the shutter speed other than in the way the camera determines aperture and focus
Depth of field needs increased, so go manual and increase the f-stop.
Does your camera have DoF preview ?
If not, the math is here ... http://en.wikipedia.org/wiki/Depth_of_field . Work out a table of values for your camera and keep it with youThis - http://www.dofmaster.com/dofjs.html - might already have your camera
WHat camera/lens do you have ? As you may find it limits what ranges you can have and you'll end up with a wrong shutter speed for action
Last edited by Matra et Alpine; 07-09-2007 at 02:10 AM.
"A woman without curves is like a road without bends, you might get to your destination quicker but the ride is boring as hell'
Supporting Admin
No the problem is not the fact that the rear of the car is out of focus, but rather it suffers from motion blur. The nose is track by the camera's focus points and the rear moves through the field of view at a different angle, so if the nose is followed, the rear is missed and out of focus.hmmmm .... the problem isn't REALLY in the shutter speed other than in the way the camera determines aperture and focus
Depth of field needs increased, so go manual and increase the f-stop.
Does your camera have DoF preview ?
If not, the math is here ... http://en.wikipedia.org/wiki/Depth_of_field . Work out a table of values for your camera and keep it with you
WHat camera/lens do you have ? As you may find it limits what ranges you can have and you'll end up with a wrong shutter speed for action
If you should see a man walking down a crowded street talking aloud to himself, don't run in the opposite direction, but run towards him, because he's a poet. You have nothing to fear from the poet - but the truth.
(Ted Joans)
Supporting Admin
That is 1/60 as well, but with a wide angle, so the distortion is bigger still. The Corvette is close to 200 mm I believe, whereas the other was at 29 mm.At 1/60 the effect is indeed bigger. I really like that effect! Thanks for your explanation Wouter
Edit: just saw your entry in the photo comp. At what shutterspeed did you made that shot?
If you should see a man walking down a crowded street talking aloud to himself, don't run in the opposite direction, but run towards him, because he's a poet. You have nothing to fear from the poet - but the truth.
(Ted Joans)
Enthusiast
Matra: I have a Nikon D70S with a 70-300mm VR F4.5-5.6
I will have to look up/read what DoF exactly is before I can answer your question
Here is a shot which I have made at 1/250. The "effect" is much less than at 1/100
FERRARI RULEZZZ
Supporting Admin
The effect would not be very apparent either seeing as the movement is pretty linear there, unlike the shots in corners.Matra: I have a Nikon D70S with a 70-300mm VR F4.5-5.6
I will have to look up/read what DoF exactly is before I can answer your question
Here is a shot which I have made at 1/250. The "effect" is much less than at 1/100
If you should see a man walking down a crowded street talking aloud to himself, don't run in the opposite direction, but run towards him, because he's a poet. You have nothing to fear from the poet - but the truth.
(Ted Joans)
Fanatic
DoF = depth of field = scherptediepte as you might know it betterI will have to look up/read what DoF exactly is before I can answer your question
Supporting Member
or in other words, the range at which a picture is sharp. The lower the focus value, the shorter the depth of field....DoF = depth of field = scherptediepte as you might know it better
"I find the whole business of religion profoundly interesting, but it does mystify me that otherwise intelligent people take it seriously." Douglas Adams
Enthusiast
which has nothing to do with that photo. as wouter said it is because the back is moving at a different angle through the frame than the front, and most people tend to look at the front of the car and follow that with their lens. the only way to address that is with a higher shutter speed to lessen the amount of blur picked up. other than shooting a car directly from the side theres no way to total avoid that effect, only lessen its appearance.
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