Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Lens Focal Length Comparison Calculator

Compare how two lens-and-sensor combinations deliver equivalent fields of view. Use it when switching camera systems or renting a lens to match your existing look.

Original Lens Focal Length (mm)

Original Sensor Format

Target Sensor Format

Target Lens Focal Length (mm)

Fill in the required fields to see your result.

Photography

Print Size Resolution Calculator

Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab.

Print Width (inches)

Print Height (inches)

Print Quality (DPI)

Color Depth

Fill in the required fields to see your result.

Key differences

	Lens Focal Length Comparison Calculator	Print Size Resolution Calculator
Category	Photography	Photography
Inputs required	4	4
Result	Field of View Ratio (x)	Required File Size (MB)
What it does	Compare how two lens-and-sensor combinations deliver equivalent fields of view. Use it when switching camera systems or renting a lens to match your existing look.	Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab.