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Question:

SLR digital camera lens parameters are represented?

SLR digital camera lens parameters are represented?

Answer:

What to buy your own head to decide what to do. Recommend 70-200 head, or buy 85 / 1.4 fixed focus.
I do not know what brand you use the camera, is a brand of the camera he has a good long, you just follow me in accordance with the above three conditions you can shoot come out.
Virtual background has three conditions, one is the size of the aperture, large aperture virtual background or prospects, the second is the length of the focal length, long focal length virtual background or prospects, the third is the subject and the background or the distance, Blur.

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