Explanation

• Paul Vierkötter — first recognizable electric flashbulb
• Year: 1925
• Country: Germany
• Purpose: To provide artificial light for photography.

Additional information:

• 1928–1929: Johannes Ostermeier develops an improved and safer flashbulb.
• 1930: Ostermeier receives a patent for his improved design.
• 1929–1930: Commercial flashbulbs, such as Vacublitz, become available.

Last updated 06 Nov 2026 by NA

Explanation

• Definition: Display resolution with approximately 4,000 horizontal pixels.
• 4K resolution is a display resolution of 4096×2160 pixels.
• It is four times the resolution of Full HD (1920×1080 pixels).
• Pixel Count: Approximately 8.3 million pixels.

Last updated 06 Nov 2026 by NA

Explanation

The cones are specialized photoreceptor cells in the retina that are responsible for color vision.

There are three types of cones sensitive to different parts of the visible spectrum.

It allowing us to perceive a wide range of colors.

Rods are more sensitive to low light levels.

They are responsible for black and white vision.

Explanation

Minimum Focusing Distance (MFD) is the shortest distance between a camera's sensor or film plane and the subject that a lens can focus on.

It typically measured in feet or meters.

It varies depending on the lens design and type.

Explanation

FPS (Frame Per Second) is a measure of the number of frames displayed per second in a video or animation.

It is a key factor in determining the smoothness and quality of motion in video content.