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Anyone kindly let me have pixel to size calculations ?
Hi,
Could anyone kindly give me some information on how I can work out resolution calculations ? I have trawled Google and there seems to be some dispute on how these calculations are done. There seemed to be a small utility for palms that did this : http://www.freewarepalm.com/calculator/pixl.shtml However I cannot find a PC based utility. Many thanks |
#2
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Anyone kindly let me have pixel to size calculations ? Mange takker Gisle !
Mange takker Gisle Hannemyr for formuleringsinformasjonen !
Beregner/debatten som jeg blitt gal, da samtidig jeg letet etter pixel omdanninger i Google, kommet jeg over en masse av informasjonså debattering på hvordan Mega Pixels kalkulerte for digitale fotoapparater. Jeg gjør imidlertid, blir enig det som bruke en PC eller PDA er over dreper, men jeg bruker MS Excel gjøre antallet crunching da jeg har 1259 avbilder kalkulere før neste uke! Mange takker igjen. ... NF ------------------------------------------------------------------------ -------- Many thanks Gisle Hannemyr for the formulations information ! The compute/dispute I may have got wrong, as at the same time I was looking for pixel conversions in Google, I came across a mass of information debating on how Mega Pixels were calculated for DCs. I do however, agree that using a PC or PDA is over kill, however I will be using MS Excel to do the number crunching as I have 1259 images to calculate before next week ! Many thanks again.... NF ------------------------------------------------------------------------ -------- ----- Original Message ----- From: Gisle Hannemyr Newsgroups: rec.photo.digital Sent: Wednesday, June 30, 2004 1:45 AM Subject: Anyone kindly let me have pixel to size calculations ? In , Gisle Hannemyr (a made-up name and address if ever I've heard one), came back with the informed retort: "UKitnewsfroupie²ºº¾" writes: Could anyone kindly give me some information on how I can work out resolution calculations? I have trawled Google and there seems to be some dispute on how these calculations are done. There seemed to be a small utility for palms that did this : http://www.freewarepalm.com/calculator/pixl.shtml However I cannot find a PC based utility. To use a PDA or computer for this is overkill. You can easily do it on a simple four function pocket calculator (or in your head): To work out the ppi, given an image pixel size and a physical print size: ppi = pixels/inches Example: Your image is 2400 pixels wide, and you let the entire image cover an paper that is 10 inches wide. In that case, you print at: 2400 / 100 = 240 ppi. To work out the width in inches of the longest side of a print, given the number of pixels and a ppi: inches = pixels/ppi Example: Your image is 2400 pixels wide, and you want to print at 300 ppi. In that case, the width of longest side will be: 2400/300 = 8 in. And finally, to work out the number of pixels needed to produce a print at a given size at a given ppi: pixels = inches*ppi Example: You want to know how many pixels there must be at the longest side to produce a 10 inch print a 300 ppi. In that case, you need an image that is 10*300 = 3000 pixels wide. (And how there can be a "dispute" about how to compute this is beyond my understanding ...) |
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Anyone kindly let me have pixel to size calculations ?
UKitnewsfroupie²ºº¾ wrote:
Hi, Could anyone kindly give me some information on how I can work out resolution calculations ? I have trawled Google and there seems to be some dispute on how these calculations are done. There seemed to be a small utility for palms that did this : http://www.freewarepalm.com/calculator/pixl.shtml However I cannot find a PC based utility. Many thanks Why obcess about something that really doesn't matter much? As long as you have enough pixels for 300 pixels per inch of print, in each direction, you needn't worry about further details. Your print program, and printer driver, will handle the matter to best effect. Relax, enjoy, and stop worrying about esoteric mathmatical aspects of the issue. That's why computer chips are in your camera, and computer. |
#4
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Anyone kindly let me have pixel to size calculations ?
Could anyone kindly give me some information on how I can work out
resolution calculations ? I have trawled Google and there seems to be some dispute on how these calculations are done UK- Did Gisle answer your question? If he understood your question correctly, then there is no room for a dispute! That is the only logical answer I can think of. Many times a picture is opened in a graphics program, and is just too big to fit on the screen. If that is the size you refer to, then there is no common relationship between pixels and size. Each camera seems to be programmed with a different size photo, regardless of the number of pixels. Then different graphics programs handle images differently. Some have preferences that can be set to either show "actual" size or fit-to-screen. The bottom line is that you need to get to know your equipment and your graphics program, and learn to work with their quirks. Fred |
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Anyone kindly let me have pixel to size calculations ?
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#6
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Anyone kindly let me have pixel to size calculations ?
Fred McKenzie wrote:
Could anyone kindly give me some information on how I can work out resolution calculations ? I have trawled Google and there seems to be some dispute on how these calculations are done UK- Did Gisle answer your question? If he understood your question correctly, then there is no room for a dispute! That is the only logical answer I can think of. Many times a picture is opened in a graphics program, and is just too big to fit on the screen. If that is the size you refer to, then there is no common relationship between pixels and size. Each camera seems to be programmed with a different size photo, regardless of the number of pixels. Then different graphics programs handle images differently. Some have preferences that can be set to either show "actual" size or fit-to-screen. The bottom line is that you need to get to know your equipment and your graphics program, and learn to work with their quirks. Fred Nonsense. The camera has little to do with the size of a photo. You can print one the size of a postage stamp from a 14 mp camera, or the size of a billboard from a 1.3 mp camera. Computer screens range from about 72 pixels/inch up to 200 pixels/inch (DAMN expensive!). Most are in the 72-96ppi range. What you see on the screen depends largely on what program you use, and has NO RELATIONSHIP to the size that will be printed, or the dots/inch of the print! The size of the print depends on what parameters you feed the print function, and the printer driver you use, and the printer you use. |
#7
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[gp] Anyone kindly let me have pixel to size calculations?
Gisle Hannemyr,
So sorry for the Broken Babelfish !! Let me guess: This had to something to do with a brand named "Sigma"? Did I win? Glad to say that you did not win the Jorge Prediguez Sigma prize ! My mother always told me to stay away from Mex-Trolls. I actually read the Megapixel compute/dispute in home pages via Google not here on the Usernet Groups. It was being said that the Megapixel figure being quoted for some cameras did not relate to the actual end resolution figures. However lucky for me this was not my quest. I am trying to work out results using your formulae and I think I am getting there - only another 498 images to input into MS Excel now !! Best wishes... Mange takker igjen. ... NF In , Gisle Hannemyr (a made-up name and address if ever I've heard one), came back with the informed retort: Please take that Babelfish out of your mouth. Its Norwegian mode is so broken that it hurts. Let me guess: This had to something to do with a brand named "Sigma"? Did I win? A word of advice. If the words "Sigma" and "megapixels" appear in the /same/ window on your computer screen - just hit whatever button it is that will take you to the next message, webpage, or whatever. This will save you from a having to read a lot of codswallop. |
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