We photographers get wrapped up in buying expensive lenses which are precision instruments to accurately capture our subjects. We (usually) want to take the sharpest pictures we can. When I’m shooting air-to-air from my KC-135 at a fighter jet on my wing like an F-15 or F-22, I’m shooting through a thick piece of plastic – my windscreen! This item has not been manufactured to the same optical standards as my lens. It’s purpose is to hold cabin pressure and to allow me to see out – not to allow me to shoot sharp pictures. It’s the weakest link in the system of taking a picture of another airplane. When the photons of light travel from my subject, through my plastic window, and then into my lens finally striking my image sensor, the window is now a part of the lens system thereby degrading the image. I need to account for this to get a sharp image. This is an inexact science as different parts of the window are sharper than others – and I can’t necessarily tell which parts are optically sharper. I can minimize the effects when my lens is perpendicular to the window. Since my window is tilted inward toward me, the best position for my subject is when it’s abeam and slightly higher than me. When my subject is moving back to get into the refueling position behind me, I have to point my camera back at maybe a 45 degree angle with respect to the window. Also, as the subject aircraft moves aft, I have to shoot out the window not nearest me which causes a greater gap between my lens and the window. This greater distance degrades image quality – dust and reflections become more easily visible. Another factor to consider is F stop. I use the charts at photozone.de (http://www NULL.photozone NULL.de) to determine the optimal F stop for a given lens. Wide open normally results in less sharpness than stopped down a little. F/8 often times is an optimal setting for my lenses; however, I don’t want my lens stopped down so far that my shutter speed suffers to the point of allowing motion blur. I’m not sure why, but it seems that longer focal lengths (beyond 85mm) start to get fuzzy results. I would recommend against shooting through windows in the fuselage as they are not very good and your results will disappoint. If you aren’t flying, you can squeeze into the empty space behind the pilots and get pretty good shots.
Here’s what I do to maximize sharpness:
- Set ISO 200 (or the lowest recommended in your owner’s manual – sometimes it’s 100)
- Set f-stop to about f/8 – hopefully the shutter speed is 1/500th or better
- try to shoot when the subject aircraft is in a position that allows shooting through the near window, at nearly a perpendicular angle.
- minimize the distance between lens and window
- use a maximum focal length of 85mm
- If you have super sharp prime, use it – 50mm and 85mm are best!
- you may consider a tiny bit of exposure compensation to lighten up the area under the fuselage – maybe a 1/3 of a stop overexposed.
Below, I have some examples. In the first example, everything came together for a sharp image. The aircraft is abeam and slightly high allowing me to put my lens perpendicularly up against the window.
In this closeup, we can easily read the tail number of this aircraft, “144″.
Now in this image, the aircraft has moved back at a sharp angle to me. Everything is going against getting a sharp picture.
Below is a blowup of the above image to prove that it’s not very sharp. Can you read the tail number below the pilot? Nope, me either.

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