[D.Cam Fan]

小弟想稍後買一支一鏡走天涯鏡頭, 做過資料搜集後, 得知 Sigma 28-200/300mm 比 Sigma 28-200mm 更廣角!

18-200mm: 7.1° - 69.3°
28-200mm: 12.3° - 75.4°
28-300mm: 8.2° - 75.4°

18-200mm 比 28-300mm tele, 28-300mm 比18-200mm wide!

[D.Cam Fan]

Sorry, the title should be:

Sigma 28-200/300mm 比 Sigma 18-200mm 更廣角!

[by1989]

你當真做過資料搜集?
28-200 同28-300由於唔係dc鏡, 所以個係sigma個網個視角係用35 mm film登出...而其他網站都係跟sigma個網出個data既...
而18-200則係dc鏡...sigma佢寫個angle of view果陣...佢果到下面已經寫明係用sigma sd 10黎計個angle of view...即係將個焦距*1.74倍左右...所以佢寫既實際係等效31.32 - 348 mm既angle of view...唔信自己計下

[D.Cam Fan]

Oh, thank you very much, I am wrong. :)

[clocker_clocker]

So ,actually, for DC the angle range is 31.32 - 348mm instead of 28-3??.
Right ?