On Tue, 17 Nov 2009 22:13:00 -0800 (PST), RDOC wrote:
On Nov 18, 12:22 am, Mike Russell
wrote:
On Tue, 17 Nov 2009 21:05:27 -0800 (PST), RDOC wrote:
On Nov 17, 10:58 pm, Mike Russell
wrote:
Suggestions, in order of preference:
1) Print and forget. Let the printer driver do the work of resampling the image.
2) Resize to 360 ppi, and sharpen to taste. Sharpening is, or should be, part of your normal work flow. I suggest using Filter>Sharpen>Unsharp Mask, with a radius between .5 and 1.0 and 75 to 125 percent. —
Mike Russell -http://www.curvemeister.com
Mike in suggestion #1 are you saying that if I print for example with a resolution of 200 ppi and the printer wants a resolution of 360 ppi it will do it by itself before it prints by doing its own resampling? Or if I don’t like that way I can chose to go the way of #2 instead rather than picking #1 in the first place? Am I reading you right?
Exactly. The 360 ppi is said to be a sweet spot for Epson printers, but I have not found this to be the case – the printer driver will do a resize automatically.
Many people neglect sharpening altogether – if you are concerned about the quality of your final image, sharpening is highly advisable. —
Mike Russell -http://www.curvemeister.com
Thanks Mike, I always do a sharpening as my last step. I guess your wording above is a little confusing when you say the print driver will do a resize automatically since if I am right it just adjusts the resolution and the pixels before printing and not the size (width and height).
The driver actually resamples the image pixels so that they will match what the printer expects. Normally a bicubic resize is used. Internally, the printer driver maps a horizontal swath of memory, called a band, that represents the printer’s output image to the original image. This is repeated during the print process, until the entire image is printed.
In theory, you could improve on this by resizing the image yourself in Photoshop. In practice, over a period of years of using Epson printers, and answering people’s questions about them here and elsewhere, I have never seen a difference myself, or heard anyone say that there was a difference between the two methods. That does not mean there is no difference, and I would be interested in any experiences you might have. —
Mike Russell –
http://www.curvemeister.com