I use an Add on in Firefox called Exif Viewer which allows me to right click on an image to read the Exif Info.
Should the poster leave the Exif intact of course.
For the first Robbie Keane image, here's what it showed;
Camera Make = Canon
Camera Model = Canon EOS-1D Mark III
Picture Orientation = normal (1)
X-Resolution = 72/1 ===> 72
Y-Resolution = 72/1 ===> 72
X/Y-Resolution Unit = inch (2)
Software / Firmware Version = Adobe Photoshop CS5 Windows
Last Modified Date/Time = 2011:05:24 23:26:17
Artist = ***** ***********
Y/Cb/Cr Positioning (Subsampling) = centered / center of pixel array (1)
EXIF Sub IFD
Exposure Time (1 / Shutter Speed) = 1/2000 second ===> 0.0005 second
Lens F-Number / F-Stop = 4/1 ===> ƒ/4
Exposure Program = aperture priority (3)
ISO Speed Ratings = 640
EXIF Version = 0221
Original Date/Time = 2011:05:24 20:03:18
Digitization Date/Time = 2011:05:24 20:03:18
Components Configuration = 0x01,0x02,0x03,0x00 / YCbCr
Shutter Speed Value (APEX) = 16986/1549
Shutter Speed (Exposure Time) = 1/2000 second
Aperture Value (APEX) = 4/1
Aperture = ƒ/4
Exposure Bias (EV) = 1/3 ===> 0.33
Max Aperture Value (APEX) = 4/1 ===> 4
Max Aperture = ƒ/4
Distance to Subject = 232/5 m
Metering Mode = spot (3)
Flash = Flash did not fire
Focal Length = 420/1 mm ===> 420 mm
Last Modified Subsecond Time = 90
Original Subsecond Time = 90
Digitized Subsecond Time = 90
FlashPix Version = 0100
Colour Space = sRGB (1)
Image Width = 522 pixels
Image Height = 720 pixels
Focal Plane X-Resolution = 144000/41 ===> 3512.2
Focal Plane Y-Resolution = 81000/23 ===> 3521.74
Focal Plane X/Y-Resolution Unit = inch (2)
Custom Rendered = normal process (0)
Exposure Mode = auto exposure (0)
White Balance = auto (0)
Scene Capture Type = standard (0)
Unknown tag, Tagnum 0xa430 = data ===> ***** ***********
Unknown tag, Tagnum 0xa431 = data ===> 566618
Unknown tag, Tagnum 0xa432 = data ===> 300/1,300/1,0/0,0/0
Unknown tag, Tagnum 0xa434 = data ===> EF300mm f/2.8L IS USM +1.4x
Should tell you everything you need to know about the image from an equipment point of view.
I also don't understand most of it btw, but the camera lenses and camera settings are in there.