Go Back   Steve's Digicams Forums > Digicam Help > Newbie Help

Reply
 
Thread Tools Search this Thread
Old Jul 31, 2011, 7:00 AM   #1
Senior Member
 
Join Date: Aug 2010
Posts: 120
Default How to take Fast Moving Objects

Hi All,

I have a Pentax K-X and I was using the 300mm Kit Lens today at Seaworld.

It was around 7pm with cloud. So, there is not much sun left.

I set the ISO to 400 and F5.6.

I am having hard time capturing the dolphin and performers diving into the water. The pictures just don't come out right, all out of focus.

Can someone help me please? I will go back and try again. I have annual pass.

Thanks
raylee011 is offline   Reply With Quote
Sponsored Links
Old Jul 31, 2011, 7:34 AM   #2
Administrator
 
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
Default

Try ISO 1600, and pan with the action so that the performers are relatively stationary in the frame.

Each time you double the ISO speed, the camera can use shutter speeds twice as fast for a given aperture and lighting.

What were your shutter speeds at ISO 400 and f/5.6? They'll be 4 times as fast at ISO 1600 and f/5.6 in the same lighting. You'll probably want to target 1/500 second or faster if possible (and that will depend on light, and how much noise you can tolerate by continuing to increase ISO speed.
JimC is offline   Reply With Quote
Old Jul 31, 2011, 7:42 AM   #3
Senior Member
 
Bob Nichol's Avatar
 
Join Date: Apr 2003
Location: Eastern Ontario Canada
Posts: 822
Default

You may have motion blur due to slow shutter speeds more than poor focus. You need good light for fast shutter speeds.

I have had some success using the following in both daylight and artifical light:

AF-Continuous mode
Try Auto Area AF point selection. You can try Center as well but it's hard to keep the focus point on the moving subject.
Auto (selectable range) ISO. Avoid using the highest speed. See my post http://forums.steves-digicams.com/ti...ml#post1244222
Metered Manual Shooting mode
Try shutter speeds of 1/500s and 1/1000s
Try aperture one stop down from wide open such as f/5.6 or f/8
Continuous Hi Drive mode. Start shooting as the action begins. Not every shot will be good but you should get some good ones.
Follow the subject in the viewfinder.

Last edited by Bob Nichol; Jul 31, 2011 at 7:50 AM.
Bob Nichol is offline   Reply With Quote
Old Jul 31, 2011, 7:42 AM   #4
Senior Member
 
frank-in-toronto's Avatar
 
Join Date: Mar 2010
Location: Toronto Canada
Posts: 1,083
Default

Presuming the "out of focus" comment is correct, you should be pre-focusing on the expected jump spot.
frank-in-toronto is offline   Reply With Quote
Old Aug 2, 2011, 5:16 AM   #5
Senior Member
 
wave01's Avatar
 
Join Date: Jun 2010
Location: North West England
Posts: 1,748
Default

have had success at Sea World Orlando using a canon T2i/550d in A1 servo mode centre focusing hers one at ISO 200 f10 1/400 using a 55-250is.
There is a bit of luck but I try to keep focused with the shutter half down then the servo mode keeps focus. Take lots of shots and good luck
Attached Images
 
wave01 is offline   Reply With Quote
Old Aug 3, 2011, 4:18 AM   #6
Senior Member
 
Join Date: Aug 2010
Posts: 120
Default

I went back to Sea World and I took some pictures too. I think this time is much better because it was very sunny.

Next time, I want to take pictures at the night show. Any suggestion what kind of setting?
Here are a few shots that I took







Last edited by raylee011; Aug 3, 2011 at 4:22 AM.
raylee011 is offline   Reply With Quote
Old Aug 3, 2011, 8:26 PM   #7
Senior Member
 
Bob Nichol's Avatar
 
Join Date: Apr 2003
Location: Eastern Ontario Canada
Posts: 822
Default

Quote:
Next time, I want to take pictures at the night show. Any suggestion what kind of setting?
If the suggestion I gave above doesn't work then you don't have enough light.
Bob Nichol is offline   Reply With Quote
Old Aug 3, 2011, 8:33 PM   #8
Senior Member
 
Join Date: Aug 2010
Posts: 120
Default

Thanks for the advice. I will give it a shot. Will a flash going to help. I guess not because the object will be too far.
raylee011 is offline   Reply With Quote
Old Aug 3, 2011, 10:31 PM   #9
Senior Member
 
VTphotog's Avatar
 
Join Date: Mar 2005
Location: Extreme Northeastern Vermont, USA
Posts: 4,214
Default

A very powerful shoe mount flash, which has zoom function, might give you enough extra light to help, depending on how far away you are. At higher ISO settings, I have gotten decent results at over 50 meters.

brian
VTphotog is offline   Reply With Quote
Old Aug 3, 2011, 10:38 PM   #10
Senior Member
 
shoturtle's Avatar
 
Join Date: Dec 2009
Location: Frankfurt AM
Posts: 11,348
Default

You will not have enough light with the 55-300 to avoid motion blur even at 3200iso. Also the low light AF of the pentax is not as good, so you will notice the lens hunting trying to lock focus.

You might need a f2.8 zoom lens for the night stuff with 3200iso, but that still might not be enough light avoid motion blur. You are talking about a 800 dollar lens for a sigma 70-200 2.8.

Also with that kind of distance, a flash may not do much, especially the built in one.
__________________
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.
shoturtle is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 8:47 AM.