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Respected Contributor
Posts: 1,667
Registered: ‎12-02-2012

Re: Canon T3i + EF 70-200mm f/4 L IS USM Lens?

[ Edited ]
The "L" lens will give you better detail and contrast and less distortion of several varieties.  I am not sure if it is the lens for what you are after.  It would help if you gave more info. 
How long have you been shooting this setup? 
What do you shoot? 
Inside or outside?
Ever in low light?
Are you saying the kit lenses do not give you enough clear sharp detail when you crop in in post?
 
Before I bought a zoom lens whose range I already had covered, and, more importantly, whose APERTURE is not markedly wider than the lens I already have, I would first examine what I want/need from it. 
 
If you were going for the much more expensive f/2.8 version, you would be getting about 4x more light into the thing compared to the kit lens at long zoom, so you could shoot with 4x the shutter speed.  The f/4 will (only) give you 2x the shutter speed (2x the light) as the kit lens at long zoom.
 
Consider buying a prime lens if that fits your needs and budget.  A 50mm f/1.4 is a good portrait lens on a crop, as well as a good long-ish walk-around.  A 35mm f/1.4 on a crop is a very practical walk-around on a crop.  Both are about the same price as your f/4 70-200, but at f/1.4 they will give you almost 8x the light (ergo 8x the shutter speed) as the f/4, and almost 16x the light a variable aperture f/5.6 kit lens has on the long end.  And prime lenses (non-zoom fixed lenses) are smaller and lighter because they have less glass, and they are even sharper (usually) than the 70-200 "L" zoom glass because their design is simpler and involves less glass.  Canon makes them, of course, but also look at the Sigma "Art" prime 35 and 50 lenses for about $900.00.
Scott

Canon 6D, EF 70-200mm L f/2.8 IS mk2; EF 16-35 f/2.8 L mk. III; Sigma 35mm f/1.4 "Art" EF 100mm f/2.8L Macro; EF 85mm f/1.8; EF 1.4x extender mk. 3; EF 24-105 f/4 L; EF-S 17-55mm f/2.8 IS; 3x Phottix Mitros+ speedlites

Why do so many people say "FER-tographer"? Do they take "fertographs"?
Guz
New Contributor
Posts: 1
Registered: ‎07-08-2017

Re: Canon T3i + EF 70-200mm f/4 L IS USM Lens?

One thing they haven't mentioned is the fact the T3i is an APS-C crop sensor camera. So your EF 70-200mm lens is going to be about 1.6x more than the 70-200.  The 200mm will be more like a 360mm on the T3i. The 55-250 lens is an EF-S lens, so it will be a true 55-250mm. I to shoot the Canon T3i and am considering this lens. Especially since it is way cheaper than the 2.8 version. Hope this helps.

Esteemed Contributor
Posts: 2,096
Registered: ‎11-14-2012

Re: Canon T3i + EF 70-200mm f/4 L IS USM Lens?

[ Edited ]

That is not correct. The EF-S lens line use the same language re how many MM they are as the EF line up does. It's confusing to some but in the long run everything can be compared using one standard. Even P & S cameras give comparible numbers in their specs using the old 35 mm film lens method still in use.   

"A skill is developed through constant practice with a passion to improve, not bought."
Highlighted
Honored Contributor
Posts: 7,705
Registered: ‎12-07-2012

Re: Canon T3i + EF 70-200mm f/4 L IS USM Lens?

Guz,

cicopo is correct. mm is mm and always will be.

 

"Especially since it is way cheaper than the 2.8 version."

It may be way cheaper but that is where any comparing has to end.  The two lenses. except sharing a similar focal length, have nothing in common.  Hope this helps, too.

A lot of Canon stuff. Along with, a lot of other stuff.
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