Understanding Image Resolution - PPI and DPI: Ask David Bergman

David Bergman answers multiple questions from viewers' image resolution, how to size files for client delivery, how many PPI or DPI do you need to print an image, and how many pixels per inch will give you the best quality.

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THANKS SO MUCH FOR WATCHING!

[ihknilsen]

Thanks David for your insight. That's a big help!!

[felixrodriguez]

So it important to know the range that your printer print at to be sure of best printing image and it color range depending on how many colors the printer can print. It color palette can make difference in the spectrum of color production of the image as to deeper.blacks greys depth of color for the print out of the image. Good coverage of the PPI and DPI thanks

[tianmoezelaar]

Finally someone who says that 20 megapixels should be enough. Everyone called me crazy when I bought a 20.9 mp camera

[garrettfitzgerald]

Thanks so much for the video! Very much appreciated.

[avpjon]

Wow! Another beautiful job of explaining a complicated subject in an understandable way. Thank you, David. That is very helpful.

[anthonyeusebio]

Thank you for this informative video. Follow up question: Would the largest print you would make off of your 1DX Mark III 20 megapixel camera be 18”x12” with 300ppi? If you wanted to make a larger print than 18”x12”, you would decrease the ppi to 100 (for example) but then have the viewing distance of the print further from the audience than the 18”x12” with 300ppi?

[balamina]

Thank you so much David for the awesome explanation of the matter! Very useful and informative!

[gregshawphotography]

So you briefly touched on the megapixel count. The consensus with a lot of photographers concerning the new R5 and R6 cameras is why would you get a 20MP camera when you can get a 45MP camera. I’m really torn as to what to get and I’m coming off a 5DIII.

[MrDinky]

Does a PI need clear pictures or videos of you in the act? Thanks

[Black_Jesus]

What advice would you have a for a hobbyist who wants to print? Set up the photo in Ps for the exact ppi you want and dimensions before sending it to be printed?

[akibono]

hi David, what I dont get is the link between different DPI in RAW image format, what is the default DPI of canon crw. format comparing to nikon nef. format, if there is a printing size of A2 by default what the DPI of that image would be otherwise, I cannot reveal it in Lightroom though, if I'm going to export in Lightroom raw format (crw, nef) into jpg or tif for final usage what DPI should one use with it and what rule should one follow?

[joshuawood]

The only question that I have, how does 300 DPI correlate to bite-size in a file if I am scanning at 300 DPI and I'm scanning anywhere from 30 to 50 8 1/2 by 11:00 p.m.

[thomaseriksson]

I like to print A2 but my Camera generate 12 Mpix how shall I resize in PS only without AI

[adrianvanleeuwen]

I would agree that for large billboard images measured in 6 feet posters or larger files could be printed as posters at 100 dpi to 150 dpi done at printing houses. However, as I have an Epson P800 for in home printing and for my clients, I prefer to print at 300 ppi or even 360 ppi for photo prints 16x20 inches or smaller. In the magazine and brochure industry 300 dpi is the industry standard. As far as printing on printers inhouse for prints 16x20 in. if someone does not have a high enough Megapixel camera, all you would have to do is interpolate or resize the photo file in Photoshop (or another editing program) to achieve a higher ppi. Any print, at 2 feet or smaller as a wall print could be viewed across the room or at 2 feet away. Older Cameras at 12mp, 16mp, or newer at 20mp or higher can be printed large after resizing in Photoshop (or AI Gigapixel for example).

[brucestapleton]

What professional printer(s) would you recommend? I like the idea you mentioned about letting them set the resolution based on the size of the photo I need.

[pattymattes]

Okay, I just want to be a bit clear on this as I would like to get some large prints made. If I have a 3757 x 4696 image exported at 300 dpi can I get a large print, say 20 x 30, with good quality resolution?

[kalakesaricvr]

I have a question
if we need to print a 10feets * 20feets (200 square feets ) Banner how much resolution we need set...? Please clarify, i need to know bcoz iam confusing lot's of time while exporting the file to print..!

[RodrigoBejarano]

Biggest misconception is that you can control the ppi. PPI is determined by your viewing device.
If you have a monitor with pixel density of let's say 100ppi, no matter what you do in software pixel density is physically determined by your viewing device construction.

[b]

Here’s my question! I will layout a hypothetical more that a real situation. If I have an image with an area of 100 pixels ranging from deepest white to deepest black and I reproduce it on a printer size that is going to reproduce that same area as a single dot of ink does that mean that it will lay down a dot of ink that will be the average of those 100 pixels? Wouldn’t I figure that to be a 50% grey dot of ink?

[istvanglock]

Is the ppi value set on the Photoshop window actually contained within the file, or is the purpose of setting the ppi value simply to provide information to the viewer as to the size of print that would result if the printer is set to the dpi equivalent of the entered ppi? If ppi is contained within the file, then do I understand that the printer can (and probably will) change the ppi according to their requirement (and assuming file has sufficient resolution for their purposes)? - meaning that it doesn't matter what ppi I set, given that the file resolution is sufficient?