• 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

  1. O

    Canon 60d Sharpness loss

    Since my first post I have contacted Canon and they told me to send it to them and they will check it for calibration and re-calibrate if necessary . I also found other people that had this issue with the 60d and had to send it back to Canon as well . So it didn't seem as if their was much I...
  2. O

    Canon 60d Sharpness loss

    Hello Everyone, hoping you can help with this problem. My Canon 60d seems to have lost some of it image quality since I bought it, the picture seem to be slightly blurry. Its not a horrifying but noticeable. I even changed the lens thinking it was that but saw the same issues. Even when I am at...
  3. O

    The Sigma 150-500 Dillema

    I have the Sigma 150-500 (bought 6 months ago) and just received my 100-400 canon. I spent too much time reading over every post again and again and just thought F*** it, and bought the canon. Will be interested to see how they compare. Dear Santa, I need a 800mm f2.8 with 12 levels of os/is...
  4. O

    Please take off your lens cap

    So I have been waiting all weekend for my Canon 100-400 all weekend ,finally got it this evening . Watched it ,talked to it, the usual thing . Turned around the lens hood and proceeded to take some pictures. After 10mins of wondering if I got a bad lens and reading the manual. I finally decided...
  5. O

    Lens repair

    Hello to everyone, I have a Sigma 150-500 and I think its lost some of its sharpness since I first bought it. It has been ruffed up a bit (bounced about in my car). I do not believe that anyone in my country is qualified to do repairs on this lens ,so I will have to send it somewhere. I was...
  6. O

    Reproduction Ratio and Telephoto's

    Thank you for the replies and clarifications. Does however raise a question about what you are actually getting when you buy a lens. Considering most us spend so much time before we actually buy lenses it would be nice to know that my 500mm might be 430mm etc.Better someone bought the 400 prime...
  7. O

    Reproduction Ratio and Telephoto's

    Hello to everyone, I am hoping that you will be able to impart some wisdom on me so please excuse the novice question. I understand reproduction ratio's concerning Macro lenses but am not sure how it affects zoom lenses. If I was to compare a Sigma, Canon, Tamron etc , all with an end focal...
Back
Top