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mitesh wrote:
It can be hard to isolate the exact reason for unsharp results, but I believe that your results are indicative of atmospheric interference due to temperature differentials in the air column. This is a very common occurrence, and the farther the distance to the subject and longer the focal length, the more apparent this effect becomes. It can happen at any time of the year, and in any air temperature. Shooting across water bodies, pavement, turf, etc., can exacerbate the problem. Your two flight shots likely suffer from this, as your subject is quite distant and there is a lot of air between you. By contrast, your perched birds are both closer and in less elevated positions, relative to your position.
Unsatisfactory results can also be due to the direction and quality of light. Not judging the quality of your images, but it appears that the light source is overhead in your two flight shots, resulting in harsh quality of light. Ideally, you want the light at an angle to illuminate your subject and provide contrast for the AF.
This is just what I've learned from my own experiences and failures, and hopefully others can provide additional input and suggestions....Show more →
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Another reason why "the closer you get the better I look."
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