First time LR printing help please :)

ddharriman · 04-27-2017, 07:06 AM

Agreed... just in my country or I cannot find them or the few I can, are more expensive

**BruceBanner** · 04-27-2017, 12:55 PM

Originally posted by TonyW

I think there are a few misunderstandings around this particular tree as the figures do not appear to be correct

What we are aiming at here is to maximise the image data we have and not leave any IQ on the table. It is quite possible that you could print at any old ppi and still get acceptable results but you would be working in less than optimal conditions and just may leave a little IQ behind as a result.

Your printer can lay down a maximum of 9600 droplets per inch in one direction (horizontal) and 2400 droplets per inch in the other (vertical) this is achieved by the feed mechanism being inched fractionally between passes of the print head.

A pro. Canon print head has 300 nozzles in the print head and this is the standard resolution it reports to your computer OS. It also has a fine mode that is reported as 600 ppi, achieved by micro stepping between passes. Epson are based on 360/720 ppi. It is also possible that they could have 150 or 180 nozzles respectively

A4 is actually 210 × 297 millimeters or 8.27 × 11.69 inches, but we can largely ignore that for the moment and concentrate on your image files native pixel count (the print diagonal does not really matter for this purpose)

Pentax K1 7360×4912 pixels when sent to the printer at 300 ppi will give a print size of 24.53" x 16.37" (rounded)
Pentax K1 7360×4912 pixels when sent to the printer at 600 ppi will give a print size of 12.26" x 8.19" (rounded)

It is quite easy in LR to see what figures your are sending as in the examples in this thread.

Maybe it will help to remember that:
If at your required print size the ppi is anything below 300 you should set LR to upsample to 300 ppi
or
If at your required print size the ppi is above 300 you should set LR to upsample to 600 ppi.

It is less than optimal to set values in between such as 400 etc and is better practice to send the data as declared to the OS and let LR or PS handle the sampling rather than the print driver. So if you do end up with a 400 ppi figure then set LR to 600 ppi.

In trying to make it easy I hope I have not complicated it

.

Yes this helps, cheers

Originally posted by ddharriman

Hi BruceBanner

First, congratulations for your choice of the Canon IX6800 for printing.
I myself have the IX6850 and have chosen what I think it’s one of the best “office” A3 printers that can produce pretty good / outstanding photo prints.

You have got pretty much the good advice for printing and got almost all the answers to your questions, but here goes one for the question about the paper.
My advice is to use Canon paper and inks - more expensive, but pays itself back in quality of prints, easy of configuration (one is it has paper profiles already installed with the printer software), almost no necessity do printing tests (and thus wasting paper and ink), etc… -, so for glossy paper, my advice is Canon Photo Paper Plus Glossy II (PP-201).

If you think I can help with more specifics (as I have almost the same printer), just ask.
Note: I print directly from DNG files using Photoshop CS5 in Windows 10, with Photoshop controlling the printing (and not the printer driver).

PS: beautiful kitten (and kitten photo)!

Best regards,

Thank you!

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04-27-2017, 07:06 AM	#16
ddharriman Pentaxian Join Date: Feb 2009 Photos: Gallery Posts: 345	Agreed... just in my country or I cannot find them or the few I can, are more expensive

04-27-2017, 12:55 PM	#17
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,404 Original Poster	Originally posted by TonyW I think there are a few misunderstandings around this particular tree as the figures do not appear to be correct What we are aiming at here is to maximise the image data we have and not leave any IQ on the table. It is quite possible that you could print at any old ppi and still get acceptable results but you would be working in less than optimal conditions and just may leave a little IQ behind as a result. Your printer can lay down a maximum of 9600 droplets per inch in one direction (horizontal) and 2400 droplets per inch in the other (vertical) this is achieved by the feed mechanism being inched fractionally between passes of the print head. A pro. Canon print head has 300 nozzles in the print head and this is the standard resolution it reports to your computer OS. It also has a fine mode that is reported as 600 ppi, achieved by micro stepping between passes. Epson are based on 360/720 ppi. It is also possible that they could have 150 or 180 nozzles respectively A4 is actually 210 × 297 millimeters or 8.27 × 11.69 inches, but we can largely ignore that for the moment and concentrate on your image files native pixel count (the print diagonal does not really matter for this purpose) Pentax K1 7360×4912 pixels when sent to the printer at 300 ppi will give a print size of 24.53" x 16.37" (rounded) Pentax K1 7360×4912 pixels when sent to the printer at 600 ppi will give a print size of 12.26" x 8.19" (rounded) It is quite easy in LR to see what figures your are sending as in the examples in this thread. Maybe it will help to remember that: If at your required print size the ppi is anything below 300 you should set LR to upsample to 300 ppi or If at your required print size the ppi is above 300 you should set LR to upsample to 600 ppi. It is less than optimal to set values in between such as 400 etc and is better practice to send the data as declared to the OS and let LR or PS handle the sampling rather than the print driver. So if you do end up with a 400 ppi figure then set LR to 600 ppi. In trying to make it easy I hope I have not complicated it . Yes this helps, cheers Originally posted by ddharriman Hi BruceBanner First, congratulations for your choice of the Canon IX6800 for printing. I myself have the IX6850 and have chosen what I think it’s one of the best “office” A3 printers that can produce pretty good / outstanding photo prints. You have got pretty much the good advice for printing and got almost all the answers to your questions, but here goes one for the question about the paper. My advice is to use Canon paper and inks - more expensive, but pays itself back in quality of prints, easy of configuration (one is it has paper profiles already installed with the printer software), almost no necessity do printing tests (and thus wasting paper and ink), etc… -, so for glossy paper, my advice is Canon Photo Paper Plus Glossy II (PP-201). If you think I can help with more specifics (as I have almost the same printer), just ask. Note: I print directly from DNG files using Photoshop CS5 in Windows 10, with Photoshop controlling the printing (and not the printer driver). PS: beautiful kitten (and kitten photo)! Best regards, Thank you!