ISO is larger than DVD

I am attempting to make a copy of a Lenovo recovery disc using ImgBurn

Step 1 - Create image file from disc (ISO)
Step 2 - Write image file (ISO) to blank disc

On step 1, the ISO it creates is 5.2GB, but DVDs are max 4.7GB, so I cannot burn the ISO to a blank disc

How is it possible that the ISO created from the recovery disc is larger than the disc itself? Is the data on the recovery disc compressed?
Reply to brandonclone1
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  1. get RUFUS and burn it to a 8GB USB Stick
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  2. Or use a double layer DVD+R/-R...
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