Sigma 1.4x TC APO EX DG
Posted: Tue Dec 06, 2005 1:24 amI recently used this TC with my Canon 70-200 F2.8 L lens while on holidays.
Image quality seems quite good with it fitted. I have not done a detailed study just yet but the quality seems not much worse than the 70-200 by itself.
AF speed was quite good, with only a slight hint of hesitation now and then if the AF target contrast was poor (would not get this with the 70-200 by itself).
Overall quite a good buy for around half the price of the genuine Canon item.
Image quality seems quite good with it fitted. I have not done a detailed study just yet but the quality seems not much worse than the 70-200 by itself.
AF speed was quite good, with only a slight hint of hesitation now and then if the AF target contrast was poor (would not get this with the 70-200 by itself).
Overall quite a good buy for around half the price of the genuine Canon item.