• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Search results

thxpress_search_the_forum Search Opus
  1. snowyowl

    New Sigma 150/600

    I have a Canon 100mm-400 which I have used with a Kenko 1.5 TC. It worked fine. What I had hoped for with the Sigma was to use it with the Kenko TC for getting shots of sea ducks. They are generally beyond the range of my Canon lens which is a zoom of 600 with the TC. The Sigma with...
  2. snowyowl

    New Sigma 150/600

    I'll answer your question, if I may. I bought the 150-600 C about 6 weeks ago. So far I've been pleased. The only real negative has been that the lens is slow to focus if it is at full or near full zoom. The obvios solution is to locate the target without zoom and then zoom in...
Back
Top