Adobe Photoshop/Query


QUESTION: Good day
Is it possible to make images and photos greater than 300 dpi in photoshop and how different would a 600 dpi be than a 300 dpi. Is so what would be maximum dpi and what type of situations and applications use dpi's greater than 300 dpi.
Finally where and how does one print images greater than 300 dpi - most printers dont.

ANSWER: Hello S.

You can make images larger in Photoshop using the Image>Image Size menu. However, enlarging photos will not increase the quality. Enlarging images past the 100% original ppi (dpi) will sacrifice sharpness and quality for the larger size, making them look worse the larger you make them.

Images that are larger than 300 ppi are normally reserved for large format or photo printers, not your average commercial printers. However, you should check with your printer before enlarging the resolution to see what their requirements are. Some printers can even go up to 1200 dpi depending on their equipment.



---------- FOLLOW-UP ----------

QUESTION: Thanks for the answer. What are large format or photo printers and how do they compare to commerical printers.
Who uses 1200 dpi images and what are the applications.

Hi S,

Large format printers are printers that use rolls of paper for banners, large one-off posters, etc. and are usually 45" minimum width paper rolls. It is hard to compare to commercial printers, because they are different kinds of printers. 1200 dpi prints are used by people looking for large banners or images bigger than a standard press sheet size.

Photo printers can be purchased for home use from retailers like epson or HP, but also photo studios or photo processing businesses have commercial quality printers. These can utilize 600 dpi images.

If you are not creating larger than 12x18" sized or looking to print professional photo prints, these larger formats and resolution sizes are not needed.



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Kevin Stohlmeyer


I am an Adobe Certified Instructor, Adobe Community Professional and Adobe Freelance Professional. I travel nationally speaking on Adobe Creative Suite applications, including Illustrator and design. I can answer questions about Adobe Illustrator version CS1 through the all-new Creative Cloud.


I am an Adobe Certified Instructor for Adobe Photoshop and have been teaching this software in college/higher education and for an Adobe Authorized Training Center since 2000. I have been an active user of Adobe Photoshop as a professional graphic designer and retoucher since 1994. I also am a published author for Adobe Inspire Magazine, writing articles on Creative Suite applications including Photoshop, Illustrator and the Adobe Touch apps.

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Member, Adobe Influencers Program and Adobe Freelancer Member Spotlight, National Association of Photoshop Professionals, November 2011 Runner-Up, The Next Adobe Photoshop Evangelist contest, 2010, 2011 Runner-Up Layers Magazine Design Contest

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