RE: Aviation photography tutorial
John, Those are some wonderful shots. Great job!! The focus sharpness is perfect even in the action shots. I also use an Image Stabilazition Lens, I upgraded from a non IS and love it. I did notice on small defect on a few of you photos I fight all the time and that is dust on your sensor. Its usually only visible in sky shots but easily fixed in PS and I understand they now have a sensor cleaning kit that can be had for around $50 and is better than a puffer. Keep up the good work.