 Tommy Carlisle |
print size how large a print can I get before noise show up with 6.1 megapixel
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William Schuette |
Hi Tommy, this is going to depend on a few factors. First, how much noise is in the original file. If it is noticeably noisy at its original size, you will not be able to enlarge much if at all. Second, what type of noise is present, luminance (light) noise or chrominance (color) noise. Color noise is generally easier to suppress with noise reduction and often does not show up as noise in a print. Third, what type of paper will you be printing on - glossy photo paper will tend to show more noise than fine art ot matte paper. Fourth, how much sharpening will you be doing. Sharpening will make noise more noticeable. Make sure you do your sharpening at the size you intend the print to be so that you can carefully examine the picure to make sure noise levels are acceptable. Sharpening will tend to make noise in uniform areas such as skies more noticeable than in areas with a lot of detail so you may want to consider masking out the effects of any sharpening in these areas. Lastly, do not make your decision on whether noise levels are acceptable based on examining the picture on your monitor at 100% or actual pizels because farmore noise will show up on your monitor than any printer could reproduce. Do your final inspection for noise at print size. Hope this helps. Bill
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W. |
8 x 6"
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Alan N. Marcus |
Hi Tommy, Print quality is a subjective thing as objective measurements are generally misleading. I like to throw around numbers so - - living up to my reputation, how about this gobbledygook. Most will tell you that a quality print must have a pixel density of 300 per inch (PPI) or greater. I will tell you that large prints viewed from 3 feet or more look good at 200 PPI. Additionally, most printers now produce reasonable quality even if the source file are low in pixel count because the modern printer has software that interpolates (interposes) pixel based on values of adjacent pixels. In other words make-believe pixels are tossed in to enhance print quality. That being said I calculated print sizes based on 200 and 300 PPI. Print lenght is 1.5 times print height like 4x6 or 8x12 (same ratio as camera chip). Additionally I have rounded values slightly,they are inches.
3,000,000 (3 megapixel camera 200 PPI 7x10 1/2 4,000,000 (4 megapixel camera 200 PPI 8x12 1/4 5,000,000 (5 megapixel camera 200 PPI 9x13 1/2 Alan Marcus, Anaheim, CA
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Alan N. Marcus |
Sorry this did not get uploaded 6,000,000 (6 megapixel camera 200 PPI 10x15 8,000,000 (8 megapixel camera 200 PPI 11 1/2x17 1/3 10,000,000, (10 megapixel camera 200 PPI 13x19 1/3 Alan Marcus
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Tommy Carlisle |
Thinks for the info.this gives me a lot to work with, this is a great start for a new member
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