Can sharp focus be achieved throughout continuous mode shooting??

eAgles · 17th June 2005

Dear All,

How are you guys?? This is my 1st post in this forum...

Hope anyone could help. I have a problem during continuous shooting like "machine gun" mode using the 10D. I only got 1 or 2 images in sharp focus in like 10 images shot. I cannot maintain sharp focus throughout the continuous shooting process. Is it meant to be like that or I did not set it up correctly? Maybe it can only be achieved by using 20D or higher bodies like 1D class?? In this scenario, I mount my 300/f4 + 1.4TC to my 10D body with abt F8, ISO 400.

Hope someone can enlighten me on that.

Thanks in advance.

Cheers, eAgles

Glyyde · 17th June 2005

did u change ur AF to AF Servo mode? I tried taking photo in burst mode with AF set to servo and the picture came out in focus even when I moved the camera....

there is one time when burst mode started with the image out of focus, but slowly got into focus after the 3rd pics....

eAgles · 17th June 2005

Thanks, Glyyde!!!

You da man!!! I forgot to switch to AI Servo.

But then again, I go check the manual. I am already at AI focus, so it will auto-switch if subject moves. In this case, it is a bird about 2m away. Eqpt is 10D+1.4TC+300/f4.

Maybe, I should use all the 9 pts instead of just centre focus. Hmmm... or the focus is just too slow to keep up with the burst mode. ??

Need fast bodies and better lenses??

Cheers!

GitS · 17th June 2005

stick with AI-servo, AI-focus a bit dodgy....

Smurfie · 18th June 2005

Originally Posted by eAgles

Thanks, Glyyde!!!

You da man!!! I forgot to switch to AI Servo.

But then again, I go check the manual. I am already at AI focus, so it will auto-switch if subject moves. In this case, it is a bird about 2m away. Eqpt is 10D+1.4TC+300/f4.

Maybe, I should use all the 9 pts instead of just centre focus. Hmmm... or the focus is just too slow to keep up with the burst mode. ?? Need fast bodies and better lenses??

Cheers!

AI-Servo is also dependent on your lens's focusing speed and your body's AF speed. If the subject is just moving too fast for the AF to track, you will still lose focus.

grantyale · 18th June 2005

AI-AF never kicks in when needed and always comes up when I focus-recompose.

Wai · 18th June 2005

no problem for me, I even zoom out at the same time

Del_CtrlnoAlt · 18th June 2005

wai, your camera body is capable, dun think his 10D can scratch yours...

btw i think your shutter too fast for the drift, the wheel seem like not moving...

sehsuan · 18th June 2005

use ONLY the centre point AF Spot, and AI Servo. it will work. even in LOW LOW LOW light. i'm kidding you not!

eAgles · 18th June 2005

Hmm... looks like a 10D body issue then. I already use centre point AF spot only but I use AI Focus instead of AI Servo. Maybe the AI Focus is not so smart after all ...

Or could it be I am already at F8 and the focus hunts too much at low light and will not work well with a 10D body. I heard f5.6 is norm. When you guys say F8, is it the aperture setting you choose or the physical aperture ie. for my case 300mm/f4 + 1.4TC gives me f5.6, still can AF, right??

Thank!

gryphon · 18th June 2005

Originally Posted by sehsuan

use ONLY the centre point AF Spot, and AI Servo. it will work. even in LOW LOW LOW light. i'm kidding you not!

Sorry a question

Using AI servo say for a fashion show.... do u use center focus & focus on model face then recompose & hold onto e shutter button. Will e camera keep using AI servo to lock on the face? I dun think so right...it will only lock onto the current center focus point (eg. e model's body)

ricohflex · 18th June 2005

many years ago used to shoot those fashion shows, not nowadays.
'fever' now over.
used the eos 1-N for catwalk with ai servo
always got sharp shots, checked my provia shots with a scheider loupe on a light box.
i take vertical shots for cat walk, camera tilted sideways
so using the top or 2nd top sensor as it will be roughly model's head.
the focus speed of the lens also helps. so far the 70-200 f2.8 L never failed me.

it is true that the centre focus spot is the most sensitive of all.
if you have a low light situation and subject is dead centre, you can use that

17th June 2005	#1
eAgles Member Join Date: Jun 2005 Location: Asia Southernmost Tip Posts: 658	Can sharp focus be achieved throughout continuous mode shooting?? Dear All, How are you guys?? This is my 1st post in this forum... Hope anyone could help. I have a problem during continuous shooting like "machine gun" mode using the 10D. I only got 1 or 2 images in sharp focus in like 10 images shot. I cannot maintain sharp focus throughout the continuous shooting process. Is it meant to be like that or I did not set it up correctly? Maybe it can only be achieved by using 20D or higher bodies like 1D class?? In this scenario, I mount my 300/f4 + 1.4TC to my 10D body with abt F8, ISO 400. Hope someone can enlighten me on that. Thanks in advance. Cheers, eAgles

17th June 2005	#3
eAgles Member Join Date: Jun 2005 Location: Asia Southernmost Tip Posts: 658	Thanks, Glyyde!!! You da man!!! I forgot to switch to AI Servo. But then again, I go check the manual. I am already at AI focus, so it will auto-switch if subject moves. In this case, it is a bird about 2m away. Eqpt is 10D+1.4TC+300/f4. Maybe, I should use all the 9 pts instead of just centre focus. Hmmm... or the focus is just too slow to keep up with the burst mode. ?? Need fast bodies and better lenses?? Cheers! Last edited by eAgles; 17th June 2005 at 08:25 PM.

18th June 2005	#8
Del_CtrlnoAlt Senior Member Join Date: Feb 2003 Location: Outside the Dry Box. Posts: 16,342	wai, your camera body is capable, dun think his 10D can scratch yours... btw i think your shutter too fast for the drift, the wheel seem like not moving... __________________ Logging Off Permanently. Those who need to contact me will know where to contact me.

18th June 2005	#12
ricohflex Senior Member Join Date: Feb 2005 Location: sing Posts: 1,538	catwalk many years ago used to shoot those fashion shows, not nowadays. 'fever' now over. used the eos 1-N for catwalk with ai servo always got sharp shots, checked my provia shots with a scheider loupe on a light box. i take vertical shots for cat walk, camera tilted sideways so using the top or 2nd top sensor as it will be roughly model's head. the focus speed of the lens also helps. so far the 70-200 f2.8 L never failed me. it is true that the centre focus spot is the most sensitive of all. if you have a low light situation and subject is dead centre, you can use that

17th June 2005	#2
Glyyde Member Join Date: Oct 2002 Location: Malaysia Posts: 57	did u change ur AF to AF Servo mode? I tried taking photo in burst mode with AF set to servo and the picture came out in focus even when I moved the camera.... there is one time when burst mode started with the image out of focus, but slowly got into focus after the 3rd pics....

17th June 2005	#4
GitS Member Join Date: Dec 2002 Posts: 784	stick with AI-servo, AI-focus a bit dodgy....

18th June 2005	#6
grantyale Member Join Date: Oct 2004 Location: Pioneer Posts: 1,396	AI-AF never kicks in when needed and always comes up when I focus-recompose.

18th June 2005	#7
Wai Senior Member Join Date: Jan 2002 Location: South Pole with Penguins Posts: 5,133	no problem for me, I even zoom out at the same time

18th June 2005	#9
sehsuan Deregistered Join Date: Dec 2002 Location: Singapore Posts: 6,674	use ONLY the centre point AF Spot, and AI Servo. it will work. even in LOW LOW LOW light. i'm kidding you not!