This has more detail than the video (and includes it) ;-)
https://www.northlight-images.co.uk/driver-settings-and-print-detail/
I've done similar tests for the PRO-200 and PRO-300
Thank you for the article.
My understanding of it after reading it, is that you are saying pretty much the same as I have said in this thread but with much more detail.
I've stopped treating the 'magic numbers' as special... (for current/recent printers)
That and automatically turning 'quality' settings up to 11 is not necessarily the best option for print quality
For a few years I've wondered about all kinds of things that are presented in this area (and other bits of photography) as 'received wisdom'...
I guess it's partly people's resistance to changing established workflows - that and you 'rub against' the fan clubs of some things at your peril ;-)
Any workflow choice made over 3-4 years ago should be fair game for re-appraisal (even my loathing of Lightroom ;-) )
I'm lucky enough to have the resources and time to test some things, but I always say that if you don't like what I've found, test it yourself...
Before we throw away all past assumptions as shibboleths,
'All' is a bit of a mis-characterisation I'm minded to suggest.
I suspect that most of us are uprezzing our photos when we print (to larger sizes).
Ah, that is not what I'm looking at in this particular test.
Keith, you have suggested that the algorithms in today’s printers are probably as good as uprezzing using software.
No I definitely don't make that suggestion ;-)
However, another assumption is that sharpening is best done at final resolution. False?
An open question - not addressed in this particular testing
Obviously, that cannot occur if the resolution adjustments are left to the printer. It follows that it is important to know the best resolution for uprezzing, which logically would seem to be the printer’s native resolution.
No - I don't necessarily feel there is any 'logically' about it... ;-)
One of the reasons I did this was to test the idea that there is even such a thing as a 'native resolution' any more...
I make no observations about upsizing (see the details in the actual article)
The test was about seeing how different resolutions of image fed through to the printed image.
The matter of printing images that are naturally at a lower resolution and upsizing images to higher resolution by various means, and any applications of sharpening (locally/general) are also questions not addressed.
As of this test, if I have an image, which at the size I want it, comes to to some odd number of PPI I'll happily send it to the driver.
I've so far looked at this for the P700/900, PRO-300 and PRO-200
At some point I'm wanting to look at big prints, resizing, sharpening and a host of other things. This test was to see if there was anything special about the 'magic numbers' and as a result of looking at those prints, I don't think there is.