Fall 2005 Photo Printer Buyers Guide

lfescalante writes "DesignTechnica has some great tips on what to look for when buying a Photo Printer. From the article: 'Some of the best printers offer 9600 x 2400 DPI and over 50 levels of gradation. Another important specification for inkjet printers is ink drop size, typically measured in picoliters. The smaller the number, the more ink per square inch can be placed on the paper. The more ink, the more accurate and lifelike the color of the print.'"

Comments

And ...

[Alranor]

The most important specification for /. readers:

Is it supported on Linux? :)

You can check at linuxprinting.org

DPI is (almost) meaningless

[jcupitt65]

A good tip I heard from a printer designer was to ignore the DPI figure, as long as it's more than about 600. It (usually) means how precisely the printer can place dots. It does not say much about the detail or grain you'll see in the print. For that, you need to know the dot size. Of course there's a trade off: smaller dots means (other factors being equal) longer print times, since you have to squirt more dots to get the same level of ink density.

Higher end printers have several shades of grey ink as well as black. This can add a lot of the apparent smoothness of prints, especially if you are going to be printing any black and white photos.

Metamerism is also very important. Print a black and white photo and look at it under tungsten and in daylight. It should stay looking black and white! You'll find some will look red in tungsten and greenish in daylight.

Finally, look at color management. Does the driver let you use your own profiles, or is it more of a point and shoot thing?

Re:DPI is (almost) meaningless

[Shanep]

A good tip I heard from a printer designer was to ignore the DPI figure, as long as it's more than about 600. It (usually) means how precisely the printer can place dots.

There is another issue, with so called photo printers. I don't know if this still holds true, so it would be good if someone could confirm this.

With older technology printers, dots per inch is actually meaningful. It literally accounted for the number of non overlapping dots, each of which could be considered a pixel. However with these new bubble jet and ink jet type printers, they need to spit many very small ink dots into the area which makes up a printed pixel, so as to build up a single pixel of varying colour through the use of dithering.

Fair enough right? Whatever needs to be done to make those images look great?

Well unfortunately, these photo printer makers are using deceptive marketing. Because a "dot" in their definition of dpi DOES NOT equate in a meaningful manner to a pixel, instead their "dot" refers to each of the smaller dither dots.

This is why for a long time, ink and bubble jets of 600dpi looked like crap against a 300dpi laser print out, where edge smoothness and text mattered.

9600dpi, 2400dpi, whatever. Don't bother telling me because it is now a meaningless figure. You could make a printer with a real dpi of 150, but made up of 9600dpi dither dots and it is still going to look like a 150dpi print out. But the brochure says 9600dpi, not 150dpi. This is an exageration btw, to make the point. The best thing to do is look at actual print outs and decide on quality with your own eyes, because manufacturer quoted numbers in this regard are pretty much useless when the most important metric is undisclosed and remains so because it would hurt sales.

Re:So

[caveat]

Just for the record, a lab print isn't ink-based, at least at the shop I go to - they use one of these suckers (maybe not that exact brand/model, but you get the point) to "paint" the image onto genuine light-sensitive color photo paper that's processed the old-fashioned way with chemicals. $1.99 for an 8x10, $2.99 for an 11x14. They look a hell of a lot better than any photo print I've ever seen, including dyesubs, and they last and last. When I do a print for my small photography side business, I do it this way...the client is almost always amazed with the result, and asks me what kind of printer I use, they just have to get one for themselves. I tell them "trade secret" :)

If you just have to use your printer, I'd suggest Ilford GALERIE Classic paper; it has an encapsulation system that soaks up the ink and mostly protects it from fading, It's pricey (enough so that there's NO economic advantage over a lab print) and takes a full day to dry out, but it is as close to perfect as you're gonna get from an inkjet. When I do prints for my own consumption, I ususally go this route for the convenience.