Factors affecting bokeh
The number and shape of aperture blades The arrangement of the lens aperture affects not so much the quality of the blur as the shape of the blur circles. In…

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The strategy for choosing the optimum diaphragm
Find the aperture value at which your lens shows the best sharpness, and use this value whenever possible (most often it is f/8 or so). If you don't have enough…

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Discipline
Don't shoot thoughtlessly. Although your emotional reaction to the scene may be spontaneous, it should lead to a non-spontaneous act of shooting that requires attention and accuracy. Negligence at work…

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means

The strategy for choosing the optimum diaphragm

Find the aperture value at which your lens shows the best sharpness, and use this value whenever possible (most often it is f/8 or so).
If you don’t have enough light, or if you want to highlight the main subject using a shallow depth of field, increase the size of the aperture, but try not to open it completely unnecessarily.
If the need has come, feel free to open the diaphragm and do not worry about it. In situations where you may need it, the aperture value is not the most important factor limiting the sharpness of images. The wiggle spoils the image much more ruthlessly than any lens aberrations. Continue reading

Basic settings of the camera
I recommend that any novice photographer actively use the camera's automation whenever possible. This applies to matrix metering, autofocus, automatic white balance, and everything else that can only be automated,…

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The complexity of the pictures
Why are Amateur photos so weak for the most part? First of all, because the average photographer is not aware of their weakness. This is not a problem if the…

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What is bokeh?
Bokeh (English. bokeh; YAP. 暈け or ボケ – "blurring") is a characteristic of the aesthetic qualities of the image area that lies out of focus, i.e. outside the grip area.…

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