Hi everybody,
I need your help !
An example image is at http://www.birdphotographers.net/for...ad.php?t=66636
I start this topic explaining my canon equipment....
400 5.6
( had the 300 f4 but too slow AF for bird in flight )
( tryed the 300 2.8 )
500 f4
1.4x - 2x
Mark IV
I would like to take as more as human possible ( or even more ) a picture with a full frame of a bee eater in flight without cropping.
So in my 20-or more days making picture of bee eater i realize the follow considerations:
1) The 400 5.6 is much better than 500 f4 or 500 f4 + 1.4x because is easier taking a good picture with a 400 5.6 and the bird at 10meter than with 500 f4 or 500 f4+1.4 at a bee eater at 20meter
as well with a 500 f4 i must use a Wimberly that doesn't help at all to frame the bird correctly.
2) I tryed to use extension tube of 12mm on my 400 5.6 ( limited AF at 8,5m to infinity )
So the AF will became somethink like 6meter to 14meter.
anyway the AF is too slow to keep a full frame bee eater in the photo with a bee eater at 6-7meter about.
I have hundred of picture with the bee eater in flight at 7m ( so is FULL in the FRAME ) but not focus right.
3) I tryed the king of the autofocus ( the 300 f2.8 ) BUT
-If i use 1.4x the AF is just a little SLOWER than 400 5.6
-the LENS is too HEAVY to more FAST following a bee eater.
-If i use the lens without any converter is starting the problem that the bird is too far....
So to take a full frame picture i need the bird at 4-5meter and not 6-7meter....
4) the best AF in these picture is using 45 points automaticaly.
These because the background is always sky.... and because i can't put the central point on the subject properly.
5) I'm just thinking now that i can try to Modify the AF correction putting a completly FRONT FOCUS so actually the AF of 400 5.6 is too slow when the bird is caming close to me ... and with the front focus i can take it in focus.
I'm actually thinking that my problem is about the delay of the camera to take the picture....
So... i have in focus the subject... i press the shutter.... the time between i press the botton for making the picture and the picture is really taken.... ( 100ms or somethink like that need it to move the mirror and the other think in front of the CCD ) the bird is not in focus anymore....
So 100ms are too much in these case.... ( a bee eater at 7meter distance with a markIV and 400 5.6 )
Remember that i'm trying to have a bee eater at a distance of about 6-7meter flying FAST, very FAST....
So my question is:
-The 400 f4 DO is faster AF than 400 5.6 ??
-Does exist a camera with faster AF than markIV ? ( I think NO )
Please response if you really tried one or more times to make picture of bee eater in flight....
because what i'm asking is only valid for bee eaters in flight...
Thanks to all the forum and thanks on all of you for your suggestions and experience!!!







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