20th April 2009, 01:42 PM
Want some advise on teleconvertor 2x(sigma). I only find the technical specification but not any detail review.
What is the actual usage of it and who uses it. I more interested in snapping nature wildlife(bird watch). I have a 70-300 lens(Sigma), i guess is not long enough to take any wildlife. Can the teleconvertor boost the distance to 600mm?
20th April 2009, 02:05 PM
20th April 2009, 02:17 PM
I read up that there will be an impact on the picture. How bad will it be, because i cannot find any picture to compare.
Advisable to get a teleconvertor?
20th April 2009, 02:27 PM
There will be slight degradation of the image quality. Effects depends on amount of light lost and also the brand and amount of TC used. 1.4 has the least, 1.7 has slightly more and 2 or 3 has the highest. And normally they are coupled with f2.8 lenses to reduce the image degradation amount...
Originally Posted by robinlimkp