dpi, lpi – What is that? Resolution of files explained simply

Dec 7, 2018

Dec 7, 2018
Dec 7, 2018
Dec 7, 2018

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14 minutes

14 minutes
14 minutes
14 minutes
dpi, lpi, resolution of files
dpi, lpi, resolution of files
dpi, lpi, resolution of files

Those who work digitally should know this

  1. A brief introduction

  2. dpi, lpi – what is what?

  3. Halftones vs. pixel dots in the printing process

  4. The “mystery” of file resolution

  5. Interpolation?

  6. 72 dpi vs. 300 dpi

  7. Pixels help

  8. Conclusion

A brief introduction

As a content agency in the Frankfurt area, we have heard a lot of half-knowledge about the resolution of data over time. Unfortunately, the camps of digital and print often still face each other. The "Bastion 300 dpi" belongs to print professionals, while the "Company 72 dpi" is firmly in the hands of digital. So everything is nicely divided. Everyone has something they can claim for themselves. But what do 72 dpi and 300 dpi actually mean, and where does this convention come from? I try to contribute a little with this article to clarify the fronts and show what is really important and what influence it has. To approach the topic, we first need to delve a bit into theory.

2. dpi, lpi – what is what?

In practice, resolution is specified as dpi = dots per inch. This means dots per inch. One inch equals exactly 2.54 cm. Since we are describing a square area (who paid attention in math?), this refers to an area of 2.54 cm x 2.54 cm = 6.4516 cm².

So remember:

  • dpi = dots per inch; dots per inch²

  • lpi = lines per inch; halftones per inch²

In contrast with the measurement in “cm”

  • dp/cm = dots per cm; dots per cm²

  • lp/cm = lines per cm; halftones per cm²

3. Halftones vs. pixel dots in the printing process

A pixel dot defines the smallest displayable point in a printed product. Halftones, on the other hand, define the smallest dots in a row. Halftones are also referred to as screen ruling. It is about how close these lines are to each other. The

Those who work digitally should know this

  1. A brief introduction

  2. dpi, lpi – what is what?

  3. Halftones vs. pixel dots in the printing process

  4. The “mystery” of file resolution

  5. Interpolation?

  6. 72 dpi vs. 300 dpi

  7. Pixels help

  8. Conclusion

A brief introduction

As a content agency in the Frankfurt area, we have heard a lot of half-knowledge about the resolution of data over time. Unfortunately, the camps of digital and print often still face each other. The "Bastion 300 dpi" belongs to print professionals, while the "Company 72 dpi" is firmly in the hands of digital. So everything is nicely divided. Everyone has something they can claim for themselves. But what do 72 dpi and 300 dpi actually mean, and where does this convention come from? I try to contribute a little with this article to clarify the fronts and show what is really important and what influence it has. To approach the topic, we first need to delve a bit into theory.

2. dpi, lpi – what is what?

In practice, resolution is specified as dpi = dots per inch. This means dots per inch. One inch equals exactly 2.54 cm. Since we are describing a square area (who paid attention in math?), this refers to an area of 2.54 cm x 2.54 cm = 6.4516 cm².

So remember:

  • dpi = dots per inch; dots per inch²

  • lpi = lines per inch; halftones per inch²

In contrast with the measurement in “cm”

  • dp/cm = dots per cm; dots per cm²

  • lp/cm = lines per cm; halftones per cm²

3. Halftones vs. pixel dots in the printing process

A pixel dot defines the smallest displayable point in a printed product. Halftones, on the other hand, define the smallest dots in a row. Halftones are also referred to as screen ruling. It is about how close these lines are to each other. The

Those who work digitally should know this

  1. A brief introduction

  2. dpi, lpi – what is what?

  3. Halftones vs. pixel dots in the printing process

  4. The “mystery” of file resolution

  5. Interpolation?

  6. 72 dpi vs. 300 dpi

  7. Pixels help

  8. Conclusion

A brief introduction

As a content agency in the Frankfurt area, we have heard a lot of half-knowledge about the resolution of data over time. Unfortunately, the camps of digital and print often still face each other. The "Bastion 300 dpi" belongs to print professionals, while the "Company 72 dpi" is firmly in the hands of digital. So everything is nicely divided. Everyone has something they can claim for themselves. But what do 72 dpi and 300 dpi actually mean, and where does this convention come from? I try to contribute a little with this article to clarify the fronts and show what is really important and what influence it has. To approach the topic, we first need to delve a bit into theory.

2. dpi, lpi – what is what?

In practice, resolution is specified as dpi = dots per inch. This means dots per inch. One inch equals exactly 2.54 cm. Since we are describing a square area (who paid attention in math?), this refers to an area of 2.54 cm x 2.54 cm = 6.4516 cm².

So remember:

  • dpi = dots per inch; dots per inch²

  • lpi = lines per inch; halftones per inch²

In contrast with the measurement in “cm”

  • dp/cm = dots per cm; dots per cm²

  • lp/cm = lines per cm; halftones per cm²

3. Halftones vs. pixel dots in the printing process

A pixel dot defines the smallest displayable point in a printed product. Halftones, on the other hand, define the smallest dots in a row. Halftones are also referred to as screen ruling. It is about how close these lines are to each other. The

Those who work digitally should know this

  1. A brief introduction

  2. dpi, lpi – what is what?

  3. Halftones vs. pixel dots in the printing process

  4. The “mystery” of file resolution

  5. Interpolation?

  6. 72 dpi vs. 300 dpi

  7. Pixels help

  8. Conclusion

A brief introduction

As a content agency in the Frankfurt area, we have heard a lot of half-knowledge about the resolution of data over time. Unfortunately, the camps of digital and print often still face each other. The "Bastion 300 dpi" belongs to print professionals, while the "Company 72 dpi" is firmly in the hands of digital. So everything is nicely divided. Everyone has something they can claim for themselves. But what do 72 dpi and 300 dpi actually mean, and where does this convention come from? I try to contribute a little with this article to clarify the fronts and show what is really important and what influence it has. To approach the topic, we first need to delve a bit into theory.

2. dpi, lpi – what is what?

In practice, resolution is specified as dpi = dots per inch. This means dots per inch. One inch equals exactly 2.54 cm. Since we are describing a square area (who paid attention in math?), this refers to an area of 2.54 cm x 2.54 cm = 6.4516 cm².

So remember:

  • dpi = dots per inch; dots per inch²

  • lpi = lines per inch; halftones per inch²

In contrast with the measurement in “cm”

  • dp/cm = dots per cm; dots per cm²

  • lp/cm = lines per cm; halftones per cm²

3. Halftones vs. pixel dots in the printing process

A pixel dot defines the smallest displayable point in a printed product. Halftones, on the other hand, define the smallest dots in a row. Halftones are also referred to as screen ruling. It is about how close these lines are to each other. The