Canon XS vs XSi

Why are people down-voting this? Does it violate some guideline? If you don't think it's a good question that's fine, but I think this is a legitimate question that many people have.

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    I think people are trying to point out it needs to be more specific; the question is too general is it stands for any good advice to be given. However, I am no regular... – Uticensis May 4 '11 at 23:27
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    I thought it was good, that is why I tried to answer it. – dpollitt May 5 '11 at 16:47
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    I suspect folks actually think it's TOO specific... focusing on exactly those two instances. The long term value of the question is low, in 10 years when those are ancient history, no one will care. Make it more generic and it might be judged a better question. I.E. "What's the difference between the x0D line and the xx0D line from Canon?" – cabbey May 6 '11 at 7:21

This is the kind of thing that review sites like dpreview pore over in excruciating detail. Or if you just want a summary, try snapsort: http://snapsort.com/compare/Canon_EOS_Digital_Rebel_XS-vs-Canon_EOS_Digital_Rebel_XSi

We can point you to those reviews or comparisons (as the top answer you've gotten so far does), but Google can probably do an even better job. If photo-SE starts getting top hits for that question when going to the reviews directly would be better for searchers, we're making the internet worse, not more awesome.

Addendum: Almost anyone who is going to answer this sort of question will probably start by doing a search or looking on one of the big camera review and comparison sites. (Even someone who is familiar with both models will probably have to look up specs.) That's a sign that the question isn't adding much for anyone.

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    This is a legitimate concern, but I feel like it's hard to find good compares and reviews, so if ineeed the top answer simply points to an awesome review, I believe we are making the internet "more awesome." – GavinR May 5 '11 at 15:56
  • If it's some really interesting blog post, sure. But if it's the biggest/most-popular camera site on the net? – Please Read My Profile May 5 '11 at 15:59
  • Perhaps I'm too much of a n00b to be here and should know that DPReview is a trusted site, but the referenced link in the answer is not on the first page of Google results for "Canon XS vs XSi" or even "canon xs xsi review." Just sayin. – GavinR May 5 '11 at 16:03
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    It is, however, the top hit for either "Canon XS" or "Canon XSI". But dpreview aside, the top hits are full of already-uesful information. There's no harm in being a "noob", but questions should be ones that fit the site well. See this blog post: blog.stackoverflow.com/2010/11/qa-is-hard-lets-go-shopping – Please Read My Profile May 5 '11 at 17:48
  • +1 for the addendum! – cabbey May 10 '11 at 4:08

I think the idea is probably that it's too simple of a question to be interesting.

Another reason might be that it is quite time sensitive, and actually, both of those models are already kind of old.

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Also note that the rough guidelines have been clarified since, as the tooltip text on the downvote arrow states now:

This question does not show any research effort; it is unclear or not useful (click again to undo)

→ More related discussion in the latest podcast/blog entry on blog.stackoverflow: SE Podcast #04

Unfortunately, your question fills the "requirements" for a downvote. Furthermore, without any context, no one else can edit it and still be sure that the edit will respect your (the original author's) intentions.

In addition, what kept me from answering it was:

It's too general. Beyond comparing the technical details — which are rather trivial to find — what are you really asking for? It would've felt unnecessary just to copy-paste the details from Canon's website (for example).

It's too specific. Should I provide more general answer between the different models in Canon's lineups — e.g. what are the general differences between 0000 D models and 000 D models? This would provide a more timeless answer; but would it help you enough? Especially since three new models have been released in the 000 D line after 450D, and you specifically asked 1000D vs. 450D.

So, showing no research effort and being too general and too specific at the same time, I felt it needed a downvote*.

Still, I believe the problem is real. I myself compared 1000D and 450D almost to exhaustion (but didn't come to any real conclusion as I found an almost-new second hand 450D at a bargain price before it) approx. two years ago. And actually, technical details didn't help much as 1000D is essentially a downgraded version of 450D. Votes aren't permanent, though, so if the question gets improved, I, for one, could vote it up. (Although this might be improbable as an answer is already marked as accepted.)

*) NB: actually I downvoted at the same time I wrote this answer as I wanted to give some more feedback beyond the comment field and this meta-question gave the opportunity

Addendum prior to Post Your Answer

OK, a great answer could've included both specific and general points — but a great answer wouldn't make the actual question better.

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