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What is the aperture of optics and what does it affect?
Aperture, aperture, maximum relative aperture - in simple words about the main thing
Basics of Photography: Fundamental Concepts Everyone Should Know
What is focal length, shutter speed, aperture, depth of field, ISO, white balance, RAW, and JPEG — simple explanations of important concepts
How to choose a solar inverter
Types of inverters for solar power generation systems and the fundamental parameters for their selection
How to choose a water filter and water filter cartridges
Key criteria for choosing a water filtration system and cartridges for them
How to choose an electric toothbrush
Recommendations for choosing an electric toothbrush that will provide comfortable use for the whole family
Formula for success: the cult series of Xiaomi Mi Band fitness trackers
A guide to all generations of Xiaomi's Mi Band line of legendary fitness trackers
How to choose a projector
Type, projection characteristics, type of lamp and matrix, as well as other criteria for choosing a projector

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E-Catalog is multifunctional service for searching goods in online stores and comparing prices. It has wide variety of product categories: electronics, computers, household appliances, car products, DIY and construction equipment, camping equipment, childen's goods and much more. Our task is to help buyer quickly and conveniently find the best offer.

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