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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

Collaborations of well-known smartphone manufacturers and photo industry giants
In partnership with venerable manufacturers of photographic equipment, many smart camera phones have been released

Interpretation of designations (marking) in Tamron lenses?
By abbreviations in the full name of the object, it is easy to find out all its ins and outs

What's in a Name? Sigma Lens Labeling
The combination of symbols in the lens name reveals most of its secrets.