煩惱中...有關相機問題

I recommend you to buy 450D + EF-S 60mm f/2.8 Macro USM. Tamron lens focus rather slowly and you may miss some great shot with your baby. Canon lens is rather good in focus speed.

When you use 60mm with your 450D, the equivalent focal length will become 60 x 1.6 = 96mm, which is rather good in taking head shot / whole body shot.

I also use macro lens to shoot my baby. Please take a look at my photos:

http://www.pbase.com/middlehill/photoaday_gallery

I don't recommend you to buy zoom lens because zoom lens will hinder your learning about the relationship of focal length and angle of view.

靚鏡頭一般可以用十年，而電子機身約只能用2-3年，個人認為應買平機身加貴/靚鏡頭。你最正路是買450d，配tamron a16，因它有f2.8之大光圈，影小BB就最好，因不應該使用閃光燈。相靚與個人技術有很大關係，並不代表你使用50d就能拍攝到靚相。