by ʇolɐǝz ǝɥʇ qoq

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If not, why, and what are the options in the same price range?

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closed as not a real question by rfusca Aug 14 '12 at 14:17

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

What kind of photography do you intend to use it for? – jrista Sep 18 '10 at 16:17
Definitely not, mainly because no such lens exists. Did you mean EF 70-200 f/4 L or EF-S 18-200 f/3.5-5.6? – che Sep 18 '10 at 19:36
Oh wow. I completely missed that huge typo... – Alan Sep 18 '10 at 19:43
Rather confusing question. I think there is a Sigma 17-200, and a Canon 18-200, but not a Canon 17-200. – jrista Sep 19 '10 at 18:58

This question is going to be very difficult question to answer, as there is not enough details.

  • Good enough for what type of shooting?
    • Outdoor Sports?
    • Indoor Sports?
    • Birds?
    • Portraits?
    • Street?
    • Video?
  • Good enough image quality wise?
  • Good enough so it doesn't hinder the features of the 7D?

In general the 70-200F4 is a nice lens, because of it's relatively light weight compared to it's long focal length, and it's low cost compared to the other 3 Canon lenses in this focal range. The 70-200 range is an effective range for many types of photography, with a number of photographers citing it as their favorite range to work with.

In low-light settings, the 70-200F4 does have an obvious disadvantage with it's one-stop less light compared to the F2.8 variants. It also does not have Image Stabilization, making the lens less desirable for indoor/low light shooting.

Specific to using the 7D, since the 7D has good high-iso image quality, the F4 isn't necessarily a hindrance for low light shots. The 7D's autofocus system is all cross-type which IIRC get extra sensitivity at F2.8, which means using the 70-200F4, the AF system may not be as performant as the F2.8 variants.

So to answer your question: assuming the 70-200 is the focal range you want (taking into account the 1.6x Field of View crop), and fits into your budget, the 70-200 is more than good enough for the 7D.

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