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peggymarlatt
Participant
February 14, 2018
Answered

Photo size terminology

  • February 14, 2018
  • 3 replies
  • 1957 views

Is 4M image size the same as 4MB?

Thanks so much for the answer to what is probably a very basic question! I am working on resizing photos of my artwork for show entry. I am not a photographer!

Peggy

This topic has been closed for replies.
Correct answer Per Berntsen

If you are referring to the Image size dialog in Photoshop, M means megabytes (MB)

So in the screenshot below, the image size is 137.3 MB.

And the image is 24 megapixels (MP) - 6000 x 4000 = 24 million

3 replies

Per Berntsen
Community Expert
Per BerntsenCommunity ExpertCorrect answer
Community Expert
February 23, 2018

If you are referring to the Image size dialog in Photoshop, M means megabytes (MB)

So in the screenshot below, the image size is 137.3 MB.

And the image is 24 megapixels (MP) - 6000 x 4000 = 24 million

Bani Verma
Bani Verma
Legend
February 23, 2018

Moving to Photoshop​

Just Shoot Me
Just Shoot Me
Legend
February 14, 2018

There is Mega Pixels (MP) and Mega Bytes (MB). Two totally different things.

MP (Mega Pixels) is the number of individual photocells, Light capturing devices, on a sensor.

MB (Mega Bytes) is the amount of space taken up for that file to store it on a hard drive/SSD/USB stick/whatever.

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