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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 02 Jul 2011 (Saturday) 19:35
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35mm vs 50mm on 1.6x crop for children's photography

 
anthony11
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Jul 03, 2011 03:33 |  #16

f/2.8 is too slow??? Note that the OP is talking about shooting 2-year-olds, not an adult who can sit still and take direction. Shooting young kids means effectively 100% candids, often with unpredictable motion. I find that anything faster than f/2.8 gives me a crappy in-focus rate with my son at indoors distances.


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kin2son
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Jul 03, 2011 04:02 |  #17
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anthony11 wrote in post #12696496 (external link)
f/2.8 is too slow??? Note that the OP is talking about shooting 2-year-olds, not an adult who can sit still and take direction. Shooting young kids means effectively 100% candids, often with unpredictable motion. I find that anything faster than f/2.8 gives me a crappy in-focus rate with my son at indoors distances.

And that's exactly the reason why you need a fast prime. As a 2 years old will walk if not run. For indoor, a fast prime will allow you to use a faster shutter speed to freeze the subject whereas a f2.8 zoom can't unless you sacrifice and bump the iso. and lets not forget the IQ and bokeh quality and the ability to blur the background....


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Blurr ­ Cube
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Jul 03, 2011 05:37 as a reply to  @ kin2son's post |  #18

Look in the 35mm range... Canon 35L, 35mm 2.0, 28mm 1.8, or the Sigmas. I think this FL will pair nicely with the 85mm 1.8 you plan on getting in the future. ;)


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Cirya
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Jul 03, 2011 06:05 as a reply to  @ Blurr Cube's post |  #19

Good luck trying to nail focus on kids with f2 or faster.. I'd def go with the 17-55, as you can easily go up to iso 2000 with the 50D. If you desperately need a fast prime, I'd go with sigma 30mm f1.4 or the 35L. Cheaper 50mm's won't do much more than the 17-55 at 50mm.


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Jul 03, 2011 06:11 |  #20

kin2son wrote in post #12696461 (external link)
f2.8 is simply good for nothing really except bright outdoor.

In what world do you live where f2.8 can only be used in bright outdoors? I use primes indoors, but I find no problem closing the aperture down to f2.8 when I want the extra DOF. And if you read Anthony's post properly, you'll see that he's saying anything faster than 2.8 gives a bad keeper rate due to thin DOF, and he is not actually saying that 2.8 is too slow (hence the ???).


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artyH
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Jul 03, 2011 07:40 |  #21

In taking photos of my 6 week old grandson, I just set the camera to TV and 1/60 or 1/80, and blaze away with the 35f2.




  
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bobbyz
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Jul 03, 2011 09:17 |  #22

artyH wrote in post #12696883 (external link)
In taking photos of my 6 week old grandson, I just set the camera to TV and 1/60 or 1/80, and blaze away with the 35f2.

Why not select the aperture?

Personally using f1.4 (sigma 30mm f1.4) I have got good pictures but it is hard to nail focus when kids move around. It is problem at f1.4 and it is same problem at f2.8. Bounced flash helps more than fast prime. Even though I haven't used 17-55mm f2.8 (no 1.6x crop camera here) but I have seen very good kids pictures from a friend who has it.

What ever lens you use, look for good light even indoors. If it is not there, create it with bounced flash.


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hennie
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Jul 03, 2011 10:49 |  #23

Is this not where, apart from the lens, the focus mode comes into the picture?
What focus mode do you use?




  
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artyH
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Jul 03, 2011 11:16 |  #24

I don't worry about aperture as much as motion blur and shutter speed with low lighting and an awake baby or child. With an f2 lens, I generally get enough depth of field. With an f1.4 lens, I would be much more likely to use aperture priority. Using a 35 mm lens on a crop, I want a high enough shutter speed, and that is 1/60 or 1/80 for an awake baby. I can go to a slower shutter speed if I want a shot while a baby is asleep.
If I want to be sure that I am at f2 or f2.2, I use aperture priority, and there are certainly times when I want the lens wide open or close to it. If there are multiple people in the photo, then I may use aperture priority to select a smaller aperture, but it depends on the lighting.
Personally, I like to use single shot center point AF and shoot when the expression is right. With digital images, I can recompose and crop.




  
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dissident
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Jul 03, 2011 11:19 |  #25

for me 50mm on a crop just isn't wide enough, indoors or outdoors. I need the 35mm, and would pick the 35mm. No brainer.


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Jul 03, 2011 12:18 |  #26

bobbyz wrote in post #12697160 (external link)
Why not select the aperture?

Personally using f1.4 (sigma 30mm f1.4) I have got good pictures but it is hard to nail focus when kids move around. It is problem at f1.4 and it is same problem at f2.8. Bounced flash helps more than fast prime. Even though I haven't used 17-55mm f2.8 (no 1.6x crop camera here) but I have seen very good kids pictures from a friend who has it.

What ever lens you use, look for good light even indoors. If it is not there, create it with bounced flash.

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datadump
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Jul 03, 2011 14:13 |  #27

get 24L + 50L and be done .


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anthony11
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Jul 03, 2011 15:11 |  #28

kin2son wrote in post #12696534 (external link)
And that's exactly the reason why you need a fast prime. As a 2 years old will walk if not run. For indoor, a fast prime will allow you to use a faster shutter speed to freeze the subject whereas a f2.8 zoom can't unless you sacrifice and bump the iso. and lets not forget the IQ and bokeh quality and the ability to blur the background....

Um, try reading my post again. A prime at f/2.8 isn't going to yield a faster shutter than a zoom at f/2.8.


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anthony11
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Jul 03, 2011 15:14 |  #29

artyH wrote in post #12697647 (external link)
I don't worry about aperture as much as motion blur and shutter speed with low lighting and an awake baby or child. With an f2 lens, I generally get enough depth of field.

Lacking any indication of gear, I'm going to assume that the above is predicated on the use of a crop body.

What ever lens you use, look for good light even indoors. If it is not there, create it with bounced flash.

... because we all live inside white spheres? Flash bouncing additionally complicates scrambling around trying to catch a kid's face. It can be useful, but is far from a panacea.

With AF servo you CAN get focus on moving children even at large apertures, so that shouldn't be a problem.

I'd really love to see how you get a moving kid's face in focus at f/1.0, 1/200 ISO 3200. Really I would.


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The ­ Devil
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Jul 03, 2011 15:15 |  #30

With AF servo you CAN get focus on moving children even at large apertures, so that shouldn't be a problem.
To be honest, I'd go for a shorter prime for indoors, and just use that 17-55 outdoors.


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35mm vs 50mm on 1.6x crop for children's photography
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