Hi Guys, Quick question about the value of compressing images within indesign, I’d designed an A4 2-page flyer ready for print and decided to play around with some setting to see the outcome, Usually, I leave the compression as default which is ‘bicubic downsampling’ to 300 – 450 ppi which give me a 2.33MB file, then I decided to create the same file but I used ‘Do not downsample’ and had got a 724MB file. Now with the file that was not downsampled, you can zoom right into the small photo’s on the cover and will it retain the native pixels and with the compressed version once zoomed in you’ve obviously got less pixels. From the actual viewing distance, you can’t see the difference unless you digitally zoom in, so I know from experience that ‘bicubic downsampling’ to 300 – 450 ppi is fine for printing. My question is, when is it good practice to use the ‘Do not downsample’ option? On a much bigger print like a motorway banner? Or have I been outputting incorrectly all these years and should be using this? Just need some context! Finally, compression > Jpeg? Or none? I create all my images as CYMK .tiffs and as mentioned I usually leave compression as default on all options which is jpeg but had never really noticed you could change it so which is the best option for print? Many thanks for any advise, the picture below is for context.
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