[hkwong1968]

Facts that already known
1) Nikon is more expensive than Sigma
2) Sigma is a newer model on 10-20
3) Nikon if f/4 vs Sigma f/4.5 - f/5.6

Other assumptions, such as
1) Already has Nikon 18-200mm
2) Already has Nikon 50mm f/1.4
3) Already has Nikon 80mm-200mm f/2.8
4) Already has Tokina 80-400 mm f/4 - 5.6

Which one is better?
How do you make a choice?
How often do you use 10mm range and 12 mm range?
Will the quality on 18mm (either Sigam or Nikon) will produce the image quality of Nikon 18-200 @ 18mm?

Thanks

[hkwong1968]

請大家幫幫忙

[小班長ErikoB]

有位好專業 ge用家做過類似 ge比較.你可以去dc胸果邊睇睇

[mkctam]

I have a Tokina 12-24. Price,PQ and construction quality seems to be OK!

[friend_dicky]

吾好意思，題外話，請問你支tokina 80-400 ok嗎？是否一支質數可以的窮人大炮？有冇sample睇吓？

[hkwong1968]

hi Friendly_dicky
please check my profile. i got one photo posted with tokina 80-400mm photo