Blow Up blows up images

Review - Blow Up by Gary Coyne

Provides: Photoshop filter for creating optimum upsamplingDeveloper: Alien Skin SoftwareRequirements: Mac OS X v10.3.9 or later, Photoshop CS or greater), Photoshop Elements 3 or laterRetail Price: $199 ($99 upgrade if you own other Alien Skin products)
Blow Up blows up images. Or, more technically stated, "Blow Up "upsamples" images to increase the number of pixels in the image and thereby increase the image's resolution." While it is impossible to do this to the degree we've learned to expect from the movies and television, Blow Up has one leg up on the competition: grain. With the algorithms of grain Alien Skin developed from the work on Exposure (see the Applelinks review), Blow Up manages to reduce and/or eliminate the plastic texture often seen in the flat regions with upsampling software.
As readers of my reviews know, I sometimes talk about specific issues given software deals with so the review is placed in context. This is one of the advantages of writing for the web: electrons are free. It's been my experience that many people do not fully understand or appreciate resolution, resampling, upsampling, downsampling, and the full issues involved in the number of pixels in an image and the number of pixels in a given length unit, that any nuances I carve out to describe Blow Up might be misunderstood or ignored. This will be one of those reviews that goes into such detail.
So, before I talk about Blow up, I'd like to briefly go over the concept of image resolution in regards to printing: In short, the greater the image's resolution, the more stuff the image has. When you link that definition to dimensions, it provides a structure to the number. Thus, a 600 x 400 pixel image will print very nicely if the final image is 2 inches wide (300 dpi). If the same image (same number of pixels) was printed at 14 inches wide it would look dreadful (43 dpi).
That's it.

Full article here: http://www.applelinks.com/index.php/more/review_blow_up/

these are NOT blown up in any way:
http://www.ct-graphics.com/skies/flying-balloon-2410.html
http://www.ct-graphics.com/other/blooming-cactus-2411.html
http://www.ct-graphics.com/flowers/valentines-roses-2412.html
http://www.ct-graphics.com/skies/balloon-flight-2413.html

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