>>3321925>The air alone would kill any super fine detail in the feathers at that distance.I don't think my morning sunrise picture of birds in calm field would have much to worry when it comes to air distortion from air density changes. Picture related is from last summer, taking a 400mm (35mm eq) picture across a black top road with bumper to bumper traffic in hot August. The distortion is there but this is just about as worst case scenario as it can get. Focus was on the "Main Gate Closed" sign.
