Dots and DPI vs Pixels and PPI (Page 2): We have some Himalayan salt in a grinder.

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Dots and DPI vs Pixels and PPI

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Jan 18, 2021 15:53:29 #

Longshadow Loc: Audubon, PA, United States

Cany143 wrote:

Real butter? Sorry, but mention of that should be relegated to the *DUH* file. Some things are so a priori obvious that the mere mention of them surpasses the limits of disbelief. But rawthah than quibbling about it further, let me just say, harrumphhhhh!

Got a preferred brand of imported sea salt, Paul? I've only used domestic brands, and if I've somehow been missing out.....

We have some Himalayan salt in a grinder.

Jan 18, 2021 17:29:17 #

Strodav Loc: Houston, Tx

CHG_CANON wrote:

This is laughable, too laughable to bother responding in a serious way, the kind of misinformation that makes the internet such a cesspool.

The attachment has a DPI = 1. Check the file properties. Why doesn't the image show as blotch of overlapping red+green+blue color? Will it print to just 1 inch or 960 inches?

For someone who post as much as you do, I was hoping you had something positive to contribute to the conversation. Maybe challenge the definitions or the examples. Please show me what is in error.

Jan 18, 2021 17:44:54 #

User ID

Longshadow wrote:

Getting popcorn.

Thaaaaaaat’s infotainment !
Everything the traffic will allow ....

Jan 18, 2021 17:51:13 #

User ID

Cany143 wrote:

I keep suggesting people sprinkle some parmesan cheese on their popcorn, but nobody listens! <sigh!>

Dude !!! Bro !!!

I am locally famous for my jar of parm that goes everywhere with me. “Food” is just an excuse to dump cheese all over something (anything) edible. The parm in my jar is laced with garlic powder ;-)

Jan 18, 2021 17:52:28 #

CHG_CANON Loc: the Windy City

Strodav wrote:

For someone who post as much as you do, I was hoping you had something positive to contribute to the conversation. Maybe challenge the definitions or the examples. Please show me what is in error.

Pixel-based images are only concerned about pixels, whether electronically viewed or physically printed.

The DPI value of a pixel-based image is as useful and relevant to pixel-based image files as the human appendix is to humans. Whether the value is '1' or '50' or '100' or '300' or '1000', it makes no difference to how the image is displayed nor the file size nor how it prints nor anything else. (With one caveat: if you mistakenly resample a digital image based on a DPI value, here the DPI value has a negative impact and relevance.)

This link may seem like a lot of reading, but it's rather concise on specific topics, including the discussion and presentation of examples found in section What are DPI / PPI?, just scroll down to this heading within the text.

Link: Recommended resizing parameters for digital images

In January 2021, we're not printing with dot-matrix printers. Actually, the 'how' of how a printer prints is rather immaterial to the average digital photographer. All the typical photographer needs to understand is the pixel resolution of their edited image file relative to the intended print size, as measure in inches in a US-based environment. That you can google today something like "what is 72 dpi" and get any response other that "bad question" is disappointing, but we all have larger disappointments to worry about than this poor response from the internet.

Pixels are also relevant to display size, as explained in the link above, such that the closer you match the image pixels to the pixel resolution of the target screen display, the better you can control the file size and the viewer experience.

When the photographer decides how large to print their image, they just have to calculate the pixel per inch (PPI) ratio for the pixels in the image file.

Q1 Does the math deliver 300 ppi or higher? If yes, no additional action. Example: 6000 pixel / 12 inches = 500 ppi.

Q2 Does the math deliver less than 300 ppi? If yes, how much less than 300 ppi? If less than 200 ppi, now large will the print be? How close will the viewer stand? Can the photographer view example work from the printer at less than 200 ppi and is that resolution satisfactory to your needed print size? Example: 6000 pixel / 24 inches = 250 ppi.

Note that nothing about 'dots' is relevant to this discussion. Rather, the width in pixels and the height in pixels is divided by the print size that provides the pixels per inch (ppi).

Jan 18, 2021 17:59:28 #

User ID

Cany143 wrote:

Oh? I'll have to try that.... soon.

Do it. White sooooper sharp is second only to asagio parm. Chop it small and mix into chili.

Did I mention that “food” is merely a substrate for cheese ? I did ? Great !

Jan 18, 2021 18:00:12 #

User ID

Hey, did I mention CHEESE here lately ?

Jan 18, 2021 18:07:49 #

User ID

Longshadow wrote:

But with popcorn.

Mega buttered cheese popcorn. The butter makes plenty of cheese stick to the popcorn. Be sure to wear black !

Jan 18, 2021 18:14:12 #

TriX Loc: Raleigh, NC

CHG_CANON wrote:

Pixel-based images are only concerned about pixels, whether electronically viewed or physically printed.

The DPI value of a pixel-based image is as useful and relevant to pixel-based image files as the human appendix is to humans. Whether the value is '1' or '50' or '100' or '300' or '1000', it makes no difference to how the image is displayed nor the file size nor how it prints nor anything else. (With one caveat: if you mistakenly resize a digital image based on a DPI value, here the DPI value has a negative impact and relevance.)

This link may seem like a lot of reading, but it's rather concise on specific topics, including the discussion and presentation of examples found in section What are DPI / PPI?, just scroll down to this heading within the text.

Link: Recommended resizing parameters for digital images

In January 2021, we're not printing with dot-matrix printers. Actually, the 'how' of how a printer prints is rather immaterial to the average digital photographer. All the typical photographer needs to understand is the pixel resolution of their edited image file relative to the intended print size, as measure in inches in a US-based environment. Pixels are relevant to display size, as explained in the link above, such that the closer you match the image pixels to the pixel resolution of the target screen display, the better you can control the file size and the viewer experience.

When the photographer decides how large to print their image, they just have to calculate the pixel per inch (PPI) ratio for the pixels in the image file.

Q1 Does the math deliver 300 ppi or higher? If yes, no additional action. Example: 6000 pixel / 12 inches = 500 ppi.

Q2 Does the math deliver less than 300 ppi? If yes, how much less than 300 ppi? If less than 200 ppi, now large will the print be? How close will the viewer stand? Can the photographer view example work from the printer at less than 200 ppi and is that resolution satisfactory to your needed print size? Example: 6000 pixel / 24 inches = 250 ppi.

Note that nothing about 'dots' is relevant to this discussion. Rather, the width in pixels and the height in pixels is divided by the print size that provides the pixels per inch (ppi).

i Pixel-based /i images are only concerned about... (show quote)

And that guys, is THE answer, so now let’s get back to the subject of cheese (maybe a good cheese fondue with Emmental and Gruyere?)

Jan 18, 2021 18:27:59 #

User ID

TriX wrote:

And that guys, is THE answer, so now let’s get back to the subject of cheese (maybe a good cheese fondue with Emmental and Gruyere?)

Used to order the fondue at a jazz joint. Acoarst I dumped a lotta my own garlic laced parm into the fondue. Stuff gotta be right ! Right ? After all, cheese is just a delivery vehicle for more cheese .....

Jan 19, 2021 08:53:19 #