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05/02/2004 10:57:39 AM · #1 |
I need a good tutorial for resizing pictures. I'm getting much better about making sure most of the shot is what I want for the final shot and print but when I resize the shot the DPI is usually around 72 to 114 and after doing the other resizing to bring it up to par for printing I end up with a pixelated shot or lines............ ARGH!!!! Anyone have a good link to a comprehensible tutorial to resizing?
Deannda
I have Jasc Paint Shop Pro 8 and Adope Photoshop 7 |
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05/02/2004 11:14:06 AM · #2 |
| I dont know of any tutorials offhand, but what resolution is your image straight out of the camera? Are you using the 5-10% resample resizing technique or another? Are you trying to make a small image into a very large image? Or are you just resampling it too much? I think some people say you shouldnt more than double your original dpi. |
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05/02/2004 12:05:19 PM · #3 |
They are usually 2048 x 1536 or 1600 x 1200 depending on which mode of the camera I have set. I'm usually cropping smaller, or I think I am. That's another thing, when I'm cropping and set the values for 8 x 10 or 16 x 20 or such it's always within the boundries of the original shot but when I go do the resizing for the DPI I first uncheck the resample using box and it automatically resets the size to what I cropped it drops the DPI to 72. I'm so confused on this whole thing and I would really like to start uploading some shots for possible prints but everytime I have lately it's been resampled too much and rejected.
I do the 5 - 10% increments and never more than double it. I've tried cropping it at 16 x 20 and then dropping the size to 8 x 10 but that screws up the resolution to it would seem. *sigh*
Deannda
About ready to give up on the print side of DPC
Message edited by author 2004-05-02 12:05:58. |
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05/02/2004 12:10:26 PM · #4 |
How big are you trying to print? Remember that when you look on Photoshop at the DPI, it is completely meaningless. Don't use that as your guide. Take your number of pixels on one side, divide it by the inches of length you are trying to print, and that is your real DPI.
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05/02/2004 12:48:13 PM · #5 |
| If you are doing the 5-10% resample then you need to have the resample box ticked. Some people resize images by unclicking the resample box and putting in whatever dpi they want (150 for printer, 212 for press). There are a lot of people who prefer the 5-10% resample method, including myself. |
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05/02/2004 12:52:26 PM · #6 |
Originally posted by moodville:
If you are doing the 5-10% resample then you need to have the resample box ticked. Some people resize images by unclicking the resample box and putting in whatever dpi they want (150 for printer, 212 for press). There are a lot of people who prefer the 5-10% resample method, including myself. |
After I set the size I retick the resample box and start the 5-10% increment increases, but I must be goofing up somewhere.
Originally posted by StevePax:
Take your number of pixels on one side, divide it by the inches of length you are trying to print, and that is your real DPI. |
But when I upload a picture to DPCPrints it usually read the file the same as the paintshop program for DPI.
Deannda
This is so fustrating sometimes |
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05/02/2004 01:30:29 PM · #7 |
Are you resizing to fit the ratio after you crop? Ideally you should be cropping to your print ratio and then resampling up with 5-10% until the required DPI. I have also created a new canvas with the size ratio I wanted (8x10 for eg) and then pasted in my cropped image to 1) make sure it fit the ratio, and 2) create a border around the image.
If you are resizing a 640x480 crop into a 1600x1200 image that could be where the pixelation is coming from. (sizes used as an example) |
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05/02/2004 01:56:09 PM · #8 |
Reset Please:
1. What is the starting size of your initial (cropped) image (pixels X pixels)?
2. What size final print do you want to make, and can it have a border?
3. Do you want to do step-wise upsampling, and if so, in 5% or 10% increments.
I'll post or email step-by-step instructions compatible with PS 7 (and probably other versions). |
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05/02/2004 02:48:12 PM · #9 |
Deannda. When using psp I start by changing the dpi to 300, which is high but it gives more flexability than 180. To change that I go to image>resize. In the pop up I do the following:
1.print size>resolution 300 (you can set it to 180 or whatever you want)
2.pixel dimension>percent>100
3.resample>smart size>checked and uncheck maintain original print size
4.lock aspect ratio (it will tell you what the ratio is)
From there, I decide what ratio I want. I like 8x10s so I crop using the rollup that I get when I click on the crop icon on the tools bar. This will change your dpi to a lower or higher amount, depending on how small/large your actual picture is. After the crop it's a good time to go back and look at the dpi. If it's below 180, you might be better off taking a different picture because that would indicate you had to crop a lot of the picture away and you will might get a lot of artifacts if you upsample or try to increase the size but I must admit with the 2200 I can print a 640x5?? at original 180dpi as a 4x6, but it's not something I'm comfortable with.
All of this ensures that you are not actually unsampling the picture in the same way that you do when you resize the picture. All the original pixels are all there, but no additional ones have been added or subtracted except in the cropping action.
Hope this is understandable and that it helps. |
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05/02/2004 04:42:19 PM · #10 |
//www.scantips.com/
While it is more scanner cetnered, it goes into great detail on DPI, prtinting and screen resolutions, what resolution you need for what size output, etc. VERY large and informative site.
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05/02/2004 11:16:15 PM · #11 |
Originally posted by GeneralE:
Reset Please:
1. What is the starting size of your initial (cropped) image (pixels X pixels)?
2. What size final print do you want to make, and can it have a border?
3. Do you want to do step-wise upsampling, and if so, in 5% or 10% increments.
I'll post or email step-by-step instructions compatible with PS 7 (and probably other versions). |
1. In PS 7, I'm not sure, I mainly use PSP 8, because everytime I use the cropping tool in PS 7 I'm not sure what size it's cropping to. Any help here would also be appreciated.
2. I would like to be able to offer up to the 16 x 20 but would be happy with an 8 x 10 at this point.
3. Yes, that is how I have been doing, in the 5% increments.
Please, post or email the instructions for PS7, I can crop in PSP 8 or any other editing program to a certain size, save and re-open in PS 7
Deannda |
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05/02/2004 11:25:35 PM · #12 |
Originally posted by Neuferland:
[quote=GeneralE] Reset Please:
..snip..
Please, post or email the instructions for PS7, I can crop in PSP 8 or any other editing program to a certain size, save and re-open in PS 7
Deannda |
When you are saving intermediate to go between programs, don't save in JPEG--save in PNG or another lossless format like TIFF. |
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