Effective PPI is less than my image's actual ppi

Forum|Forum|7 years ago
December 4, 2018
3 replies
3148 views

Hello,

I've got a problem with my InDesign pre-flight saying my A5 size images in my document have an effective resolution of 214ppi, when I double check using photoshop all the files are sized correctly and 300dpi so I don;t know where the resolution could have been lost?

thanks

This topic has been closed for replies.

Correct answer rob day

Also, depending on how you've set your General>When Scaling preferences and the Transform panel, it would be possible to have an image that shows as 100% in the Control panel, while its parent frame(s) are scaled, which would affect Effective Resolution, e.g. you placed while a frame was selected and the selected frame was scaled, with its Frame Fitting Options set to Auto

The image shows as 100% with Transformations are Totals unchecked

But its parent container frame is scaled to 140%

Bill Silbert

Community Expert

If you click within an image using the direct selection tool and look at the area of the Control Panel as highlighted in the screen shot below what percentage do you see?

If the percentage shown is higher than 100% then your effective PPI will decrease. It seems possible that somehow (possibly, as Bob suggests) using content aware fitting or autofit your images have come into InDesign larger than you intended.

beepeadesignAuthor

Participating Frequently

nope, it was placed in actual size, at its DPI. No re-sizing in indesign, it was exactly A5 and fit on the A5 page. Nothing in the control panel suggested it was resized either.

I dropped it in at first but then put it in again using 'place'

It said it was under 200ppi which is a huge change from 300 even if it's been slightly resized.

I've flattened the image (layered PSD) saved as TIF and boosted it to 400dpi and it fixed the problem (I was in a rush to get the job out) - never had this problem before with images made at the correct size. So wierd.

I've learned a couple of bits though so thanks everyone, I'll know to double check these things.