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How to choose a memory card
Tips on choosing memory cards for smartphones, cameras, video recorders, action cameras and other digital equipment

What is the aperture of optics and what does it affect?
Aperture, aperture, maximum relative aperture - in simple words about the main thing

Does a full frame make a difference? Is it worth buying a full-frame camera?
Do I need to spend money on an expensive full frame or is it better to buy a cropped camera?..

Everything is relative: interchangeable lenses for cameras from third-party manufacturers
Lenses from alternative brands: money down the drain or an increase in image quality?