I think it means that the flash from the camera makes the subject look pale and sickly, hence the use of the term "hurl" (as in the subject looks as though he or she is going to vomit because of his or her pale skin tone, or 照片里的人肤色苍白，像要呕吐似的). This is further confirmed by the subsequent sentence: "The Lumia 1020 features a Xenon flash that’s supposed to perform better than the traditional LED flash on most smartphone cameras—{though it still leaves our subject with an odd-looking skin tone.}"

http://www.urbandictionary.com/define.php?term=hurl :

1. hurl
1. (n) Vomit
2. (v) To vomit
1. Look out for the puddle of hurl
2. I think I'm going to hurl!

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Note added at 2 days9 hrs (2013-12-13 17:08:40 GMT)
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拍照时使用闪光灯将显得照片里的人肤色苍白，像要呕吐似的。

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Note added at 2 days9 hrs (2013-12-13 17:10:32 GMT)
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(There must be a better way to word the sentence above in Chinese, but essentially this is what it means.)