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| The Dark Room -- Photo Editing and Picture Taking. Advice, tutorials, questions on all things photoshop, photo editing, and taking pictures of beads or glass. |
2007-05-12, 12:19pm
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FlameTree Glass, Inc.
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Join Date: Nov 19, 2006
Location: Atlanta
Posts: 138
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Help! DPI questions
I have a Power Mac G4 and a new Sony 7.2 Cyber Shot. I don't know what to do to get my photos to load as 300 dpi into Photo Shop. When I download photos onto the computer, they're coming in at 72 dpi and I don't know how to change it. Can someone help me?
Thanks,
Maureen
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2007-05-12, 12:45pm
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In search of her path....
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Join Date: Jun 05, 2005
Location: North Seattle, WA (use to be Fort Wayne IN)
Posts: 7,285
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when you open them in photo shop they will be 72 DPI and probally like 40 some inches wide or something like that what you do is resize it to what you want. like 8x 10 inches and then set the DPI at 300 and it will resize the pic to that from the what it was on the camera. Basically what your doing is compressing down the huge inch file into a more compact DPI file that is smaller in inches but larger in DPI.
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Prints for sale in my
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!
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2007-05-13, 8:41pm
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Boro Brat
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Join Date: Sep 09, 2005
Location: Maine
Posts: 3,732
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Yep! What Karin said! One more thing...if you are viewing on-screen (not printing) such as setting up for an ebay auction, 72 dpi is what you want...it is the right resolution for viewing on the screen. For prining, most printers are best at 300 dpi. As a side note, I normally save my edited files under a different name so that I always have the origional pics at the origional resolution if I need it. Hope that helped a little!
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Pipyr
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2007-05-15, 10:00am
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FlameTree Glass, Inc.
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Join Date: Nov 19, 2006
Location: Atlanta
Posts: 138
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Thanks! I appreciate the feedback.
Maureen
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2007-05-16, 6:58am
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Beadaholic and lovin it!!
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Join Date: Jan 25, 2007
Location: Sunny and warm Orlando, Fl
Posts: 92
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Hey Maureen
I miss you guys here in Orlando!!! Hope all is will in Georgia. Good luck with the pix.
Karen
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BOREDOM IS A MATTER OF CHOICE NOT CIRCUMSTANCE
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2007-05-16, 11:20am
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
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If you are using Photoshop, select Image>Image Size. That will open a box that gives you the file dimensions, resolution, etc.
To change them from 72 dpi to 300, first deselect "Resample Image" and then change the resolution from 72 to 300. If you don't deselect "Resample Image", it will blow the image up almost three times the original size, and your picture clarity will suffer greatly from the resampling. If you don't resample, all you are doing is just telling your computer how many pixels are in an inch. The picture is the same pixel size, but the physical size goes down because there are the same number of pixels. And, instead of dividing them up every 72 pixels and calling that an inch, it is making the division every 300 pixels.
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2008-02-06, 8:51pm
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Senior Member
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Join Date: Jul 01, 2005
Location: Ohio
Posts: 7,458
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What if I don't have Photoshop - are there any standard programs (I'm using Vista, sorry) that can resize?
I have Microsoft Office Picture and Paint.
(Wimpy, I know, but I usually just take pics and crop them, don't mess with color or anything else.)
And sorry, I'm glass literate but computer stupid and easily frustrated.
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2008-02-07, 8:18am
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
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I believe GIMP will resize photos. www.gimp.org
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2008-02-07, 9:59am
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Senior Member
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Join Date: Mar 30, 2006
Posts: 140
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Quote:
Originally Posted by NLC Beads
What if I don't have Photoshop - are there any standard programs (I'm using Vista, sorry) that can resize?
I have Microsoft Office Picture and Paint.
(Wimpy, I know, but I usually just take pics and crop them, don't mess with color or anything else.)
And sorry, I'm glass literate but computer stupid and easily frustrated.
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I'm not sure if this has anything to do with the Beads 2008 group ad, but if it does you can just send me the biggest picture you have. (Big!) I can make it 300 DPI myself.
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: Friendly site for reserving spots in Group Magazine Ads.
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2008-02-09, 8:20am
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Mandrel Slayer
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Join Date: Jul 27, 2006
Location: The Third Coast
Posts: 630
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Can I hijack this thread? I have a graphic from my website that I want to use in print but it was created at 72 dpi. When I re-size it to 300 dpi it is about 1 inch in size. Is there anyway to enlarge this? 
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Nothing right now
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What happens in Rockland, stays in Rockland.....
Hellcat, Two M-15s, propane and finally no tanked oxy.
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2008-02-09, 10:28am
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Senior Member
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Join Date: Jul 01, 2005
Location: Ohio
Posts: 7,458
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Quote:
Originally Posted by skyberrys
I'm not sure if this has anything to do with the Beads 2008 group ad, but if it does you can just send me the biggest picture you have. (Big!) I can make it 300 DPI myself.
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It does, it does, and I love you - mine are coming in 180 dpi. 
I'll see what I can take good pics of that I really like today - thank you so much!!!!! 
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"...living hopefully ever after..." -john lennon
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2008-02-11, 7:17am
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
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Quote:
Originally Posted by playingwithfirebeads
Can I hijack this thread? I have a graphic from my website that I want to use in print but it was created at 72 dpi. When I re-size it to 300 dpi it is about 1 inch in size. Is there anyway to enlarge this? |
Nope. You can reduce the DPI, but not increase it without losing clarity.
DPI is "dots per inch". "Dots" are pixels. When the number is 72 or 300 or 1200, all that is doing is telling the computer that that many pixels will make up an inch. So if a picture is 100 dpi, and the picture is 300 pixels wide, the picture will be 3 inches wide. If you tell the computer to interpret the file as 300 dpi, it will make it one inch wide. The more pixels per inch the better the clarity of the picture will be. When you take a low resolution picture and make it larger, the computer "splits pixels" to make it bigger. So if you have a picture that is a black pixel next to a white pixel, the computer will add pixels in between to make it larger. It will make those pixels gray, which is the average of the pixels around it. So, when you do that with a photograph, it adds in a lot of extra pixels and makes them the color that is the average of the pixels around them. That is what ruins the clarity.
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2008-02-19, 9:25pm
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Senior Member
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Location: NC
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Cosmo you were born to be a teacher among your many other talents! You manage to explain complex concepts so that even a novice can understand. A rare trait and much appriciated!
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2008-02-20, 8:39am
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
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Thanks. I do what I can.
I also taught a Photoshop class at our local community college several years ago, so I've heard almost all of these questions before. I wish I still had my handouts from class. If I did, I'd post them here. I lost them in a computer meltdown...
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