KeithBreazeal said:Erik X said:Here are some not perfectly sharp pictures.. that was my first airshow with 5D3/100-400II, I'm learning..
Nice shots. I especially like the last one.
Multiple aircraft formations are tricky for getting all tack sharp. As the aircraft pass, your autofocus is tracking one or multiple aircraft. Because each is a different distance from you, their relative speed is different- even if they are locked into a formation. Depth of field is always a factor, but in this case the shutter speed needs to deal with the aircraft moving at slightly different speeds. The closer they do the flyby, the more noticeable the effect.
This drives me crazy when I shoot heritage flights of prop and jet combinations. Having to increase shutter speeds means prop blur is being sacrificed. I shoot with the 5D III and 100-400 also. Having shot with the crop frame bodies, there is a slight difference in DOF, but the same factors exist. If using a center focus point, try to pick the middle of the formation for the average speed, then use the appropriate f stop.
In this example, I was shooting at 1/400th f11 and still got motion blur from the closest Sea Fury. I was tracking the outer one that was going slightly faster in the arcing turn.
Lovely shot of the Sea Furies Keith and thanks for that explanation. I always liked the dynamic in this shot but it bugged me about the nearest one not being tack sharp.
Nice Spitfire series Erik
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Thanks Graham
