Sigma 120-300 f/2.8 EX OS

Jay T wrote in post #14425683
here are 2 from today at 600mm

these are nice. Is it a flycatcher?

gabebalazs wrote in post #14430244
these are nice. Is it a flycatcher?

They are Eastern Phoebes ("they" may be just "it").

Edit: which is, or course, a flycatcher.

howiewu wrote in post #14430279
They are Eastern Phoebes ("they" may be just "it").

Edit: which is, or course, a flycatcher.

Thanks

A couple new pics. Taken with an old 1D mkII and TCs. The last one was with 2x and 1.4x TCs stacked.
The hummingbird photos are about 50% crop. Processed. Light wasn't good for the hummers, ISO 1600 used.

IMAGE LINK: http://www.flickr.com …/29108710@N04/7​199698478/

IMAGE LINK: http://www.flickr.com …/29108710@N04/7​199696384/

IMAGE LINK: http://www.flickr.com …/29108710@N04/7​199696178/

Since I've shot a few recent photos with my old (but new to me) 1D Mk II, I thought I'd share a 100% crop just to demonstrate why we can't always rely on 100% crops to tell how sharp a lens is or isn't.

THIS IS WITH 2X SIGMA TC, AT 600MM

APS-H sensor (bigger sensor), only 8mp, large pixels. These all help a lens produce a nice 100% crop by not putting too much resolving pressure on the optics. If I had taken this with my 7D, the results would be different (softer image).

Full image:

Wowwww, that looks great!

Edit: or shall I say...that looks "nuts"

/ducks

Very nice

Thanks, Gabe, for posting your workflow in detail.

I looked at your workflow more closely, and I believe that noise reduction is key in your workflow. For me, since I only have an older version of PS (CS2) which does not allow me to manipulate raw files directly, I have to convert them (I do shoot raw) from DPP, and the noise reduction function in PS never seems to do anything for me As a result, I cannot sharpen the images as much as I want because the noise level would be too high.

gabebalazs wrote in post #14429410
Here is my usual post processing work flow.
But let me start with what to keep in mind during the actual photo taking process.

gabebalazs wrote in post #14431786
Since I've shot a few recent photos with my old (but new to me) 1D Mk II, I thought I'd share a 100% crop just to demonstrate why we can't always rely on 100% crops to tell how sharp a lens is or isn't.

THIS IS WITH 2X SIGMA TC, AT 600MM

APS-H sensor (bigger sensor), only 8mp, large pixels. These all help a lens produce a nice 100% crop by not putting too much resolving pressure on the optics. If I had taken this with my 7D, the results would be different (softer image).

I guess you mean that the 100% crop would look less good, but the full image should look better/the same, no?

freddyronny wrote in post #14434353
I guess you mean that the 100% crop would look less good, but the full image should look better/the same, no?

The full image would look almost the same, as long as I framed it the same way. Obviously, the 7D with its 1.6x multiplication factor "zooms" in more so to speak if we take the shot from the same place.

But if I ensure that the squirrel fills the frame exactly the same way as in the 1D Mk II shot (i.e. we take the 7D shot from a greater distance), the full image would look very similar, while the 100% crop would be a little softer (since we magnify the 7D image a lot more when viewing at 100%).

howiewu wrote in post #14434036
Thanks, Gabe, for posting your workflow in detail.

I looked at your workflow more closely, and I believe that noise reduction is key in your workflow. For me, since I only have an older version of PS (CS2) which does not allow me to manipulate raw files directly, I have to convert them (I do shoot raw) from DPP, and the noise reduction function in PS never seems to do anything for me As a result, I cannot sharpen the images as much as I want because the noise level would be too high.

Yes, I agree. By using CS5 my image quality went up considerably, due to the new ACR and the reduce noise tool.

A couple more hummers, this time taken with 7D. 600mm.
Cropped and processed. Last one at ISO3200

IMAGE LINK: http://www.flickr.com …/29108710@N04/7​206377540/

IMAGE LINK: http://www.flickr.com …/29108710@N04/7​206375654/

IMAGE LINK: http://www.flickr.com …/29108710@N04/7​206375428/

...besza.ás Gabesz, kegyetlen, amit ezzel az optikával művelsz

peti

gabebalazs wrote in post #14437406
A couple more hummers, this time taken with 7D. 600mm.
Cropped and processed. Last one at ISO3200

I can never get this kind of noise level at ISO 3200 .. time to upgrade my software

hi guys... can check whether anyone uses this lens with a TC on a 5D mkiii??..
can it still AF??..

thanks...