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DPChallenge Forums >> Hardware and Software >> What is the correct amount of DPI?
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01/10/2007 04:07:12 PM · #1
Hello everyone, I shoot Canon RAW and DPI amount is set at default at 350 DPI in my DPP program, 99% of my prints is 4x6. Is this amount too much for 4x6. I will have to print 16x20 or 20x30 image in the near future, what is the right amount for this large image?

Sorry the tread below, I posted last night, so far nobody has replied yet ):

My images usually are much darker in prints than they appear on my LCD screen. I heard about monitor calibration, but I don't know much about it. How do I calibrate my monitor or is there any software/hardware that helps me with this? I really want my prints to look exactly like how they are on my LDC. I don't print at home, all my images are printed at a professional lab near my house.

Please help me on these issues, I thank you in advance for helping me and bearing with me on this long thread.

Nhut

Message edited by author 2007-01-10 16:07:39.
01/10/2007 04:24:29 PM · #2
For large prints, the minimum DPI that will satisfy you will depend on how critically and how closely you examine the prints. For smaller prints where your original file gives over 300 DPI, you'll notice almost no benefit from being above 300DPI. That doesn't mean that you necessarily need to downsample, you can just resize to the print dimension and let the DPI be above 300.
For large prints, you will probably want to keep DPI above 200 if you are very critical, whereas 150 or eve 100DPI may be acceptable for prints that are intended to be viewed at some distance. It may be beneficial to resample uoward if the DPI gets very low, but the difference will not be that apparent.
With regard to color, yes, calibrating the monitor is a necessity. A hardware calibration tool is the ideal way to do so, but careful software calibration can get you pretty close. Follow this page closely, and you should wind up in good shape.

Message edited by author 2007-01-10 16:25:28.
01/10/2007 04:37:52 PM · #3
Who is making the prints that you say are "darker"? Is that your own home printing or a professional service of some sort? A typical "consumer" service would do a better job of printing what your files have in them, and if you've not tried that, I would recommend it at least for a comparison. "Home" printing is much more of a pain in the butt than most folks realize, especially if you have a critical eye.
01/10/2007 04:39:53 PM · #4
heres a good link that may help you understand some more.
//www.smugmug.com/help/print-quality
01/10/2007 04:46:14 PM · #5
Hi Nards656, thanks for your reply. I print at a professional lab where my wedding photographer friend prints his images. My prints from them are much better than my local Walmart, Sam's, Walgreens and Costco (I've tried them all). It's just that when your subject is placed infront of a dark erea, that dark erea would appear much darker than what I see on my LCD.
01/10/2007 04:50:44 PM · #6
Originally posted by nhuto:

Hi Nards656, thanks for your reply. I print at a professional lab where my wedding photographer friend prints his images. My prints from them are much better than my local Walmart, Sam's, Walgreens and Costco (I've tried them all). It's just that when your subject is placed infront of a dark erea, that dark erea would appear much darker than what I see on my LCD.


Sorry for not reading your entire post above where you so kindly told us that already.
01/10/2007 04:50:52 PM · #7
Originally posted by nhuto:

Hi Nards656, thanks for your reply. I print at a professional lab where my wedding photographer friend prints his images. My prints from them are much better than my local Walmart, Sam's, Walgreens and Costco (I've tried them all). It's just that when your subject is placed infront of a dark erea, that dark erea would appear much darker than what I see on my LCD.


I have just got my photos printed for one contest and they are way too dark!!:( I am so disappointed, I had to print big sizes and it cost a lot and what I got is so bad. oh well. and I printed in a studio, not in a walmart-like shop.
:( I really understand you.

and I have another question:
when I resize images for alamy do i loose dpi? I have afeeling that I do. PS always asks me about that dpi number I always set to 300 as it was, but every next time I resize it gets lower and lower. is it normal?

thank you!
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