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Keep Shooting! Photography Assignments (04 Feb 2013)
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Canon 70x200 f2.8 non is
Sigma 70x200 f2.8 is
I shoot a Canon t3i now. I am above average camera user. I enjoy taking pictures of people, both portraits and groups, indoors and out. I also have grand children in sports, basketball and baseball and want to take pictures of them in action.
My main concern is the Canon is a great lens but I can't afford the is version. The Sigma has os and is close to the same price. Which would you suggest? Is the Sigma guality picture wise comparable to the Canon?
The Canon is optically better and would be my choice. I'd only go with the Sigma if you really need the OS. Like will you be shooting at very fast shutter speeds in low light a lot? If not, the Canon all the way for me. The Sigma is a fine lens but the Canon would be the better choice.
And welcome to the forum.
I probably won't be doing to much high shutter speed low light shooting, although I will be doing some. At what shutter speed do you think you can hand hold the non is canon with no problem? Would a monopod offer the same results as is?
Well, the rule for calculating the lowest usable shutter speed is that you use the shutter speed that is the reciprocal of the focal length of the lens. So, for example, at 70mm, the lowest shutter speed you can use is 1/70 of a second if such a setting existed. And at 200mm, the lowest usable shutter speed is 1/200. This is not a definite science as some people will be able to handhold slower, but it is a very good general rule of thumb.
A monopod will be a good aid and should give you a few extra stops. A tripod would be ideal. But sometimes, you just need high shutter speeds, like if your grandchildren will be playing sports, and that is where the Os will shine. You do have f/2.8 at all focal lengths which will let plenty of light in and allow you to use fast shutter speeds plus you could always increase the ISO of your 600d.
Overall, I'd still go with the Canon. It offers better image quality and if you will only be doing high shutter speed photography in low light occasionally, you will get away with opening the lens up to f/2.8 and increasing the ISO if need be. Plus, a monopod or tripod could also be used. Overall, for you, I think the Canon would be best.
What you will want is fast focus which is something you should test on your own body before purchase. Both lenses are good and if you buy the sigma (via my amazon.com link hint hint) and find out you don't like it then you will be able to sell it easily and only lose a few bucks.
BUT!, i tried sports sometimes, and i experience that the Autofocus is too slow to do that, where the Canon is fast and accurate.
And, @ 200 mm, the Canon is much more sharper than the Sigma, and i reviewed both..
Good luck on it. Hope to hear your choice soon!
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