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Reducing DPI How is it done?????
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May 13, 2012 14:24:32   #
Mudshark Loc: Illinois
 
oldtool2 wrote:
Mudshark wrote:
snowbear wrote:
DPI is actually a misnomer - it means dots per inch and is a holdover from dot-matrix printers. It is nothing more than how many pixels (dots) are in an inch.

I use Adobe Lightroom for most of my processing. Since I shoot raw, I have to convert the images to jpeg for publication. I just tell Lightroom what to make the dpi when I convert.


I'm not sure what DPI had to do with dot-matrix printers but it has everything to do with printing photos on paper with a press...
quote=snowbear DPI is actually a misnomer - it me... (show quote)




Basically the same thing. When they first came out you had to specify how many dot per inch you wanted the printer to use. I think it became a big selling point. My printer will do 240 dpi, so what, our manufacture does 241.


Jim D
quote=Mudshark quote=snowbear DPI is actually a ... (show quote)


I think you are absolutely correct...I'm just saying that "dpi" actually was there long before in the printing biz...and all of this is just sort of borrowed language in the digital world...and it is all confusing to most people...including myself. I suspect by the time we all figure this stuff out and it all seems like everyday, common language...the world will again have changed and there will be some other source of chaos and confusion...

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May 13, 2012 14:50:36   #
oldtool2 Loc: South Jersey
 
Mudshark wrote:
oldtool2 wrote:
Mudshark wrote:
snowbear wrote:
DPI is actually a misnomer - it means dots per inch and is a holdover from dot-matrix printers. It is nothing more than how many pixels (dots) are in an inch.

I use Adobe Lightroom for most of my processing. Since I shoot raw, I have to convert the images to jpeg for publication. I just tell Lightroom what to make the dpi when I convert.


I'm not sure what DPI had to do with dot-matrix printers but it has everything to do with printing photos on paper with a press...
quote=snowbear DPI is actually a misnomer - it me... (show quote)




Basically the same thing. When they first came out you had to specify how many dot per inch you wanted the printer to use. I think it became a big selling point. My printer will do 240 dpi, so what, our manufacture does 241.


Jim D
quote=Mudshark quote=snowbear DPI is actually a ... (show quote)


I think you are absolutely correct...I'm just saying that "dpi" actually was there long before in the printing biz...and all of this is just sort of borrowed language in the digital world...and it is all confusing to most people...including myself. I suspect by the time we all figure this stuff out and it all seems like everyday, common language...the world will again have changed and there will be some other source of chaos and confusion...
quote=oldtool2 quote=Mudshark quote=snowbear DP... (show quote)


You mean like Bokah?

Jim D

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May 13, 2012 22:59:50   #
GoofyNewfie Loc: Kansas City
 
oldtool2 wrote:
You mean like Bokah?

Jim D


Or misspelling it! (Bokeh)
Somehow I don't think MS word knows how to spell it either way.

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May 14, 2012 03:27:21   #
marcomarks Loc: Ft. Myers, FL
 
robertcull wrote:
Hello One and All: I am trying to understand DPI and how to reduce it to 72 DPI? I would appreciate any assistance anyone can give. I am from the film era and am new to digital and computers.
Always learning...it's a trip. Thanks in advance for your assistance.

Doc :thumbup:


You may want to say what editing software you're using.

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May 14, 2012 04:31:38   #
PhotoArtsLA Loc: Boynton Beach
 
GoofyNewfie wrote:
oldtool2 wrote:
You mean like Bokah?

Jim D


Or misspelling it! (Bokeh)
Somehow I don't think MS word knows how to spell it either way.


Microsoft Word? The bane of American literacy? The crutch of the uneducated? I once knew a member of the Word programming team. To understand corporate greed, it might interest you to know Microsoft keeps so far ahead of its release cycle that up to five newer versions of Word exist, including manuals and box design, at any given time. This means, while they could cut to the chase and sell you a less buggy version, they choose to profit off of each release over time. Word systematically devolved into a blithering mess of committee programming over the years.

Still, Word is an infant in the word processing arena. Older, more robust, and certainly more powerful word processors which preceded Word by years are still being sold today. Their power is in their assumption education is not a global failure, and some, who actually paid attention in school might relish word processing the way it was meant to be. Of course, when Word is upgraded to make a morning double shot cappuccino to cap its idiocracy, I might like it for the beverage.

Further, the "DOCX" format is heaven sent for hackers. The rigid preamble to DOCX makes decrypting any available encryption used to "protect" the document child's play. What took hours now takes minutes. Hooray!

Wait a minute... this thread is about DPI. Funny thing: although you may think pixel dimension is all that matters, say 800x600, if you save that at 300 dpi, on SOME computers, it will display as a sub-postage stamp size image instead of the larger screen image expected. It all depends on the computer.

Converting to a screen resolution, where both 72 dpi and 96 dpi are involved, guarantees correct display on most monitors. This does not correct, however, problems with the monitor itself. It can be distressing to see your image looking not so good on certain monitors, but that's the way of the world.

On the PC, PaintShop Pro probably has the best algorithm. On the Mac, it's PhotoShop, or in fact, both iPhoto and Preview. Preview is free on all Macs.

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May 14, 2012 05:19:02   #
dpullum Loc: Tampa Florida
 
robertcull wrote:
Hello One and All: I am trying to ... reduce it to 72 DPI? Doc :thumbup:

Again the reduction and other manipulations of image size are well accomplished with a program designed to do specifically that deed, Faststone Resize. Read an independent review of this freeware program on CNET: http://download.cnet.com/FastStone-Photo-Resizer/3000-2192_4-10319476.html

It is counter intuitive to use PS or other dismally cluttered multi-trick programs when Faststone is specifically designed to do "Resize"ing well. Other Faststone programs are available at http://www.faststone.org/

Regarding the understanding of DPI, why bother trying, accept that is a ghost from Seurat’s past, and still drags its chains around at Halloween and Christmas. Do not try to involve Easter and resurrect it by discussion. If a printer asks for dpi for the billboard of your love, then in your benevolence, why not make your printer happy giving them what they ask - meaningful or not - why argue or try to understand a traditional ceremonial incantation. Numerologists have long employed both the Canonized number 72 dpi and the more bold Nikonic 300 dpi in predictions.

DPI is better left as a religious unknown, to be understood only by Jesuit theologians. Certainly not in the realm of the common photographer; not to be pondered lest you grow hair on the palm of your brain. Better to know that the dpi cult constitutes one of the most impressive applications of Divisionist theory. This theory is one of the few "theories" accepted by the fundamentalist Republican die-hards since it was part of the evolution of fine printing. The much revered order of the "NINE PIN PRINTERS." See the purity of these: www.wikipedia.org/wiki/Dot_matrix_printer

Jesuit tradition holds that "St. Bons" was founded in 1857 under the Franciscan Friars who are the Pope appointed keepers of DPI knowledge. (also review Andy Warhol, and Pope Culture) ... In 1889 Saint Bons name was changed in honor of Saint EPSON. This Jesuits in this cloister are caring on from the revelation, not of Fatima, but rather of the 1880s Pointillism tradition and their efforts with fine printers in the AD (Now meaning; After Digital) era. This cult like movement simply constitutes one of the most impressive applications of Divisionist theory. Enjoy photography and do not try to understand the internal workings of the camera, printers, inks, or other non artistic trappings. Long live Pointillism.(http://www.webexhibits.org/colorart/jatte.html)

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May 14, 2012 09:37:55   #
Mudshark Loc: Illinois
 
oldtool2 wrote:
Mudshark wrote:
oldtool2 wrote:
Mudshark wrote:
snowbear wrote:
DPI is actually a misnomer - it means dots per inch and is a holdover from dot-matrix printers. It is nothing more than how many pixels (dots) are in an inch.

I use Adobe Lightroom for most of my processing. Since I shoot raw, I have to convert the images to jpeg for publication. I just tell Lightroom what to make the dpi when I convert.


I'm not sure what DPI had to do with dot-matrix printers but it has everything to do with printing photos on paper with a press...
quote=snowbear DPI is actually a misnomer - it me... (show quote)




Basically the same thing. When they first came out you had to specify how many dot per inch you wanted the printer to use. I think it became a big selling point. My printer will do 240 dpi, so what, our manufacture does 241.


Jim D
quote=Mudshark quote=snowbear DPI is actually a ... (show quote)


I think you are absolutely correct...I'm just saying that "dpi" actually was there long before in the printing biz...and all of this is just sort of borrowed language in the digital world...and it is all confusing to most people...including myself. I suspect by the time we all figure this stuff out and it all seems like everyday, common language...the world will again have changed and there will be some other source of chaos and confusion...
quote=oldtool2 quote=Mudshark quote=snowbear DP... (show quote)


You mean like Bokah?

Jim D
quote=Mudshark quote=oldtool2 quote=Mudshark q... (show quote)


Yes...all soft and fussy and just sort of a blur...of course by that time my primary concern will be how many raisins I got in my oatmeal and if the new candy stripper will let me pat her behind....Oh wait...it's sing along time...

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May 14, 2012 10:00:27   #
GoofyNewfie Loc: Kansas City
 
PhotoArtsLA wrote:

On the PC, PaintShop Pro probably has the best algorithm. On the Mac, it's PhotoShop, or in fact, both iPhoto and Preview. Preview is free on all Macs.


What about a Commodore 64? Still Paintshop Pro?

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May 14, 2012 15:56:15   #
dpullum Loc: Tampa Florida
 
Commodore 64,,, were taken off the market originally because they were considered as class one narcotics.... addictive with all the games and actual color and not green or amber screens..

Commodore 64 were great computers and as i recall used with TOASTER for Video work... very expensive compared to the modern world!!

Commodore 64... buy a new one!!
http://bits.blogs.nytimes.com/2011/04/06/the-new-commodore-64-updated-with-its-old-exterior/

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May 14, 2012 15:59:17   #
GoofyNewfie Loc: Kansas City
 
dpullum wrote:
Commodore 64,,, were taken off the market originally because they were considered as class one narcotics.... addictive with all the games and actual color and not green or amber screens..

Commodore 64 were great computers and as i recall used with TOASTER for Video work... very expensive compared to the modern world!!

Commodore 64... buy a new one!!
http://bits.blogs.nytimes.com/2011/04/06/the-new-commodore-64-updated-with-its-old-exterior/


I was just kidding,or so I thought!
What's old is new again.
Just like the B&W only Leica.

Reply
May 14, 2012 17:16:28   #
Mudshark Loc: Illinois
 
If we could just add audio files...I'd post the "twilight zone" theme here...
Oh...Oh...SH--...there's some guy out on the wing....Marge...gimme your iPhone...damn plastic airline windows....hey...he's dropping trou....

Reply
 
 
May 14, 2012 17:28:54   #
GoofyNewfie Loc: Kansas City
 
Mudshark wrote:
If we could just add audio files...I'd post the "twilight zone" theme here...
Oh...Oh...SH--...there's some guy out on the wing....Marge...gimme your iPhone...damn plastic airline windows....hey...he's dropping trou....


Wasn't that William Shatner?

Reply
May 14, 2012 20:23:02   #
Mudshark Loc: Illinois
 
GoofyNewfie wrote:
Mudshark wrote:
If we could just add audio files...I'd post the "twilight zone" theme here...
Oh...Oh...SH--...there's some guy out on the wing....Marge...gimme your iPhone...damn plastic airline windows....hey...he's dropping trou....


Wasn't that William Shatner?


Warp Speed Sir! He's dropping trou on the starboard wing...
Bill...Bill...Get back in the cabin you fool...!!

Reply
May 14, 2012 20:46:33   #
dpullum Loc: Tampa Florida
 
Vector, vector, we need more dpi, max out the raster, pile on the knowledge...
All electronic art images are divided into one of two core types, raster images (also know as 'bitmaps') and vector images. In a nutshell raster images are composed of connected dots and vectors are images composed of connected lines.

Raster Images versus Vector Images
http://www.signindustry.com/computers/articles/2004-11-30-DASvector_v_raster.php3#story
By Jay Busselle, Director of Business Development, Digital Art Solutions

May the force be with us all...as we read the rest of the article. d/p

PS: Thanks Guys & Gals for finally motovating me to trip across the explanation of DPI... it appears to have its core in raster images are composed of connected dots

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