BillD7000

I've successfully used a Kenko-Pro 1.4 with my 300/4 af-s on a D7100 & D7200. Wide open, very sharp.

Haven't read through the posts, but absolutely bring the Sigma, and a mono-pod.  I'm imagining buffalo breathing off steam...  You can actually do a ton with what you have.

One from last Saturday, with a tripod and Sigma 18-35/1.8.

Thanks.  It's about getting in rhythm with the server...  People who assume this is about "spray and pray" with so many frames per second, have no clue.

The decisive moment, in tennis...  The instant of impact, as seen yesterday at the CT Open Tennis, in New Haven.

Thanks!  It's amazing how some people lived in 1904, when the Flagler Estate was built...

A few from a short vacation in Palm Beach, FL.  All were done with the Sigma 8-16mm, and a tripod (except the wall mural and the billiard tables -- hand-held). WYNWOOD WALLS, MIAMI THE BILTMORE ...

Fine work!   Thanks for sharing.

I was drawn to the technological aspect.  My first serious camera was a Minox B, which I got in college by trading a 10-speed bike.  Well worth the exchange. After university graduation, I received ...

All great points... Problem is, as quality has surged, so has the demand for convenience.   It's almost a directly inverse relationship.  We have the best audio quality ever, available in CD's. ...

Why would people move to FX?  A mirrorless DX body would be even smaller than an FX version. Actually, if people are taking good images with what they have, they may make no switch at all. New ...

To answer your question, i think the results from the Kenko Pro are super, even wide-open, or one-stop down.  Of course, you get added responsibility to add technique along with added reach.  ...

Anything through window glass has to be assumed as compromised in terms of ultimate sharpness.  Also, as said, these subjects are pretty far away relative to their size.

I'm only saying to mount it on a tripod as a test to see how sharp the lens is, or is not...  Do this on a fixed object, at f/4. In regular use, I NEVER put mine on a tripod, but always hand-held.  ...

Lots of great comments already... I'll just add that I've found my 300/4 AF-S very sharp, wide-open on my D7200, viewed at 100%.  The results with a Kenko Pro 1.4x have also been very satisfactory ...

If he adjusts the AF calibration, won't that throw off what now seems optimal in LV?

For things in the air, assume you'll be using 300mm. Go early, and get a spot on the flight-line. Consider using ISO640 for jets, (if you can't get a shutter speed above 1/2000th). If you've got ...

I believe the second is a P-51D Mustang.

Thanks!  For me, it's hard enough getting the images...  The Thunderbirds (in two images) fly the F-16.

Thanks!  And wow, you got that right.  It was HOT.