Howard Zehr Changing Lenses 

 

I have been involved in photography for many years. One of the lessons I have learned is how profoundly the lens I look through affects the outcome. My choice of lens determines in what circumstances I can work and how I see.

If I choose a "slow" lens with a small maximum aperture, the image will be dim, and good-quality photographs may be hard to obtain under low light levels.

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