Should i change to CYMK colour for printing?

joezzz · 6th December 2004

Hi jus a question on mind, upon uploading the photos for editing in the computer, should i convert it to cymk colour before bring to studio for developing into photos? if i want to print 4r photo, what mega pixal should i used to get crystal clear photos. any website on this?

catchlights · 6th December 2004

Most lab use RGB only, 300 pixal per inch (PPI) is recommendable, in jpg or tiff format should be fine. CMYK is for offset printing.

Hope this help.

Neo · 6th December 2004

No... no... no... CYMK is only used for off-set printing. For inkjet printers, although it's using CYMK inks, it is expecting RGB data. The internal conversion engine will do the conversion. If you feed it CYMK data, your photos will be flat and lifeless, not to mention your colours will be off.

Stay in RGB...

joezzz · 6th December 2004

thank for your help. what about the magapixal setting, should i set to the highest for better resoultion for 4r size?

Belle&Sebastain · 6th December 2004

Originally Posted by joezzz

thank for your help. what about the magapixal setting, should i set to the highest for better resoultion for 4r size?

doesn't really matter but you need at least a 2M output but the more the merrier.

Ah Pao · 8th December 2004

Originally Posted by Belle&Sebastain

doesn't really matter but you need at least a 2M output but the more the merrier.

Haha...just don't feed it a 10MB JPEG file for a 4R print...you will notice a long waiting time...

ordinaryless · 12th December 2004

Originally Posted by catchlights

Most lab use RGB only, 300 pixal per inch (PPI) is recommendable, in jpg or tiff format should be fine. CMYK is for offset printing.

Hope this help.

Would it be a problem if the colour workspace in my Photoshop 7.0 is sRGB instead of RGB?

The default resolution is 180PPI and the image size by default is 2048 by 3072 which equates to 2/3 or 0.6666666..

If i were to change the resolution to 300PPI, the image size will be automatically changed to 3413 by 5120 which equates to 0.666601562.
Since it is not exactly in the 2/3 format, will i face any problem to print them in 4R size in photolabs?

6th December 2004	#1
joezzz Member Join Date: Nov 2004 Location: siglap Posts: 87	Should i change to CYMK colour for printing? Hi jus a question on mind, upon uploading the photos for editing in the computer, should i convert it to cymk colour before bring to studio for developing into photos? if i want to print 4r photo, what mega pixal should i used to get crystal clear photos. any website on this?

6th December 2004	#2
catchlights Senior Member Join Date: Sep 2004 Location: Punggol Posts: 10,794	Most lab use RGB only, 300 pixal per inch (PPI) is recommendable, in jpg or tiff format should be fine. CMYK is for offset printing. Hope this help.

6th December 2004	#3
Neo Member Join Date: Jul 2002 Posts: 947	No... no... no... CYMK is only used for off-set printing. For inkjet printers, although it's using CYMK inks, it is expecting RGB data. The internal conversion engine will do the conversion. If you feed it CYMK data, your photos will be flat and lifeless, not to mention your colours will be off. Stay in RGB...