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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 26 Mar 2011 (Saturday) 15:30
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70-200 f2,8 vs 70-200 f4 IS

 
YouTellMe
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Mar 29, 2011 03:04 |  #16

Since you mentioned low-light i would suggest getting the f/4 and investing into a flash if using flash is allowed where your shooting (aquariums is a place flash is prohibited).
But since you said no flash since its a poker tournament it automatically answers your question to go with the f/2.8 and maybe add in a monopod/tripod. This is kind of like the same debate that people have between getting the 24-70 f/2.8 or 24-105 f/4 IS...


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MGiddings ­ Photography
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Mar 29, 2011 04:17 |  #17

Or the Sigma 70-200 2.8 OS which is sharper than both of these has OS and is the same price.


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Klamber
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Mar 29, 2011 16:55 |  #18

YouTellMe wrote in post #12114578 (external link)
Since you mentioned low-light i would suggest getting the f/4 and investing into a flash if using flash is allowed where your shooting (aquariums is a place flash is prohibited).
But since you said no flash since its a poker tournament it automatically answers your question to go with the f/2.8 and maybe add in a monopod/tripod. This is kind of like the same debate that people have between getting the 24-70 f/2.8 or 24-105 f/4 IS...

most of the times you cannot use monopod or tripod anywhere in those places. (u just dont have space for this)
I think that 2,8 gives me too narrow DOF - really dont want to get sharp nose but eyes are already blurred ... or maybe i just overthinking...
and what about the f2.8 < f4 IS ? 3-4 stops everybodys talking about?


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pdrober2
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Mar 29, 2011 17:00 |  #19

i am suffering from the same decision....


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viktorsundberg
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Mar 29, 2011 17:01 |  #20

I think you are overthinking :)
If your subjects are moving (as you stated in a post) the IS won't help you at all.
If they are more or less motionless, IS is good.
I solved this problem by getting the 2.8 IS II, which is probably the most expensive "gadget" I ever bought! :/


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FLYH2O
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Mar 29, 2011 17:12 |  #21

2.8 or 2.8 IS would be my choice. You'll never doubt your choice if you go fast.


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Klamber
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Mar 29, 2011 17:16 |  #22

FLYH2O wrote in post #12119336 (external link)
2.8 or 2.8 IS would be my choice. You'll never doubt your choice if you go fast.

f4 IS has the same price as f2,8
f2,8 IS has more then 2 times bigger pricetag then those two


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FLYH2O
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Mar 29, 2011 17:22 |  #23

It's only money?


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Klamber
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Mar 29, 2011 17:47 |  #24

FLYH2O wrote in post #12119407 (external link)
It's only money?

budget is like that.


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Snydremark
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Mar 29, 2011 17:48 |  #25

Klamber wrote in post #12119223 (external link)
most of the times you cannot use monopod or tripod anywhere in those places. (u just dont have space for this)
I think that 2,8 gives me too narrow DOF - really dont want to get sharp nose but eyes are already blurred ... or maybe i just overthinking...
and what about the f2.8 < f4 IS ? 3-4 stops everybodys talking about?

What sort of distance are you shooting at? At 15ft and 200mm, you'd be looking at f/4 - DoF: @3in vs f/2.8 - DoF: @2in. If you double your working distance then you're looking at f/4 - DoF:@12in vs f/2.8 - DoF: @8in; not really that large of a difference in regards to the nose/eyes concern.

As far as 2.8 vs 4+IS portion, like others have said, the IS won't help you keep a high enough shutter speed to mitigate any movement of your subject. It will only keep you from blurring the shots due to camera shake at lower shutter speeds.

To keep your shutter speed up, the only things that will let you do that are better lighting, higher ISO or a larger aperture. If your situation limits you to a shutter speed of 1/50 with the f/4 lens and ISO 1600, you'd be able to get 1/100 with an f/2.8 lens in the same conditions/settings. You could certainly get around that by boosting the ISO to 3200 with the f/4 lens, but most cameras aren't putting out great output by then.


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Wilt
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Mar 29, 2011 18:00 |  #26

Heavier, bulkier, more shallow DOF, more prone to camera shake handheld, slightly more expensive, better subject motion freezing in low light

vs.

Less heavy, less bulky, slightly less shallow DOF (1.8' vs 1.3' DOF zone with framing a 4x6' area at 200mm), less prone to camera shake handheld, slightly less expensive, less subject motion freezing in low light


The decision is yours to make, as each of us has our own rank priorities of what is important.


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DL ­ Photo
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Mar 29, 2011 18:23 |  #27

I currently have the f4 IS and will probably sell it for the 2.8 IS. The ONLY reason is that I have shot indoor sport a few times recently and the f4 did not cut it. I managed to have some keepers at ISO6400 but still too much NR required. The 2.8 IS would have allowed ISO3200.

If low light action is not on the cards for you, I'd say go with the f4 IS......what a beautiful lens. And yes, I find that there are plenty times when not shooting action when I do need the IS.


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Tommydigi
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Mar 29, 2011 20:10 |  #28

For me if I was a serious pro I would get the 2.8 is but f4is with an 85, 100, or 135 would be what I would get if I was buying today


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mikestarr
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Mar 30, 2011 08:08 as a reply to  @ Tommydigi's post |  #29

buy both! problem solved


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DL ­ Photo
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Mar 30, 2011 18:10 |  #30

mike...now that would be called "heaven"


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70-200 f2,8 vs 70-200 f4 IS
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