How to make custom print sizes on a Pixma Pro 100

[DValjalo]

I have a Mac Pro desk top computer, I'm trying make custom print sizes on a Pixma Pro 100, but I'm only able to print 5x7 or 8x10 prints nothing larger. Please help. Thanks

[jrhoffman75]

Welcome.

Please make sure you have the IJ Series version of the printer installed.

This is using Lightroom: 1. select paper size; then select Manage Custom Sizes

Select the "+" icon and add your custom size.

[DValjalo]

Thank you, I'll give it a shot.