The essential Image Size command lets you scale an image on screen or in print. In this week’s Photoshop Top 40 Countdown episode, Deke explains resampling and resolution, both of which affect the core quality of digital photographs.
Tags: Deke McClelland, image size, Photoshop Top 40
Very opinionated view of the subject. While I strongly disagree with some opinions, the web image size information in this clip is clearly wrong.
If you email or post on the website image with the size of 1750 by 705 pixles (as recommended in the clip) – it will be huge in many browsers and the size of it will be much more than needed. Web browsers normally display images at 72dpi. So, the width of this image in the web browser will be 1750 / 72 = 24inches. Isn’t this too much? Plus the size of this file would be 300K+.
Actually Deke is right. (as usual) If you recall the ppi was set at 166.65px and NOT 72-ppi – pixels per inch which is what Photoshop uses. dpi is for printing only. There is no resolution rule on the internet. It’s just easier to send a file using 72-again ppi – not dpi. Because the “weight” for lack of a better term is much lighter and can be sent to mulitple destinations on the internet. Some email clients such as Yahoo only allow up to 10mb to be sent in an email. According to them – that is….. but the truth is if you try to send anything higher than 7mb it will not go thru.
Back to this file. DPI is really a physical characteristic of a printer. All printers use ink dots to print – dpi means how many dots per inch it will ink the picture or artwork. Other than manually changing the DIMENSIONS of a document changing the dpi in a printer will not change the size of it. ppi changes the size of a document as well as the visual quality. So when Deke changed the file to 1775 ppi by 705 ppi the actual size was in fact 10.5 inches in width by around 8 inches in height a perfectly ok size to open up in any Web browser.
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