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Editing Tip: Still Image dpi vs. pixels

CreativeCOW presents Editing Tip: Still Image dpi vs. pixels -- Apple Final Cut Pro Tutorial


Biscardi Creative Media
Buford Georgia USA
CreativeCOW.net. All rights reserved.


There is much confusion about dpi vs. pixels when it comes to still images and video editing. In this short tip, Walter Biscardi, Jr. helps to take some of the mystery out of the process.



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Comments

Re: Editing Tip: Still Image dpi vs. pixels
by David Lewis
Walter:

Thanks for the clarification. Actually on some of the graphics and photos there is some significant zoom in, but many are minor moves or shifts.

I will keep the photos at 72 DPI and see if they can enlarge the frame size while scanning photos for the project. I know they already sent me some 300 dpi photos that I may photoShop back down to 72 dpi and increase the frame size.

All the best and thanks again.

David C. Lewis
Editor- Director
DCL Video Productions
Re: Editing Tip: Still Image dpi vs. pixels
by David Lewis
Walter, thank you for responding.

So, to clarify, if I have video at 1920X1080 Apple Pro Res 422 and I want to create a graphic for the edit or import a photo for the edit, both with the intent to use with a significant zoom-in, I would double the frame size (to compensate for that zoom in) to a size of 3840 X 2160.
Correct?

David C. Lewis
Editor- Director
DCL Video Productions
@David Lewis
by walter biscardi
Somewhere in that range. If you're doing a small zoom, maybe not so much, but if you plan to zoom in significantly, then double would good. Just make sure they're 72dpi because if the files get too large, FCP really doesn't like them.

Walter Biscardi, Jr.
Editor, Colorist, Director, Writer, Consultant, Author, Chef.
HD Post and Production
Biscardi Creative Media

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Re: Editing Tip: Still Image dpi vs. pixels
by David Lewis
Walter:

Thanks for clearing up an issue I've been messing up for awhile. I always knew that video can only take 72 dpi images, yet was never quite sure how to get a better image out of the stills.

So when I receive a photo from a client, I should import it into my project at a frame size AT LEAST as big as my project, correct? If I know I'm going to be zooming in on the photo, is there a proper ratio, or frame size I should use as an import setting?

Also, for graphics, I assume the same standard applies.
Again, do you recommend a ratio size for suppling to graphic artists in creating images for video?

Thanks again for some great information.

David C. Lewis
Editor- Director
DCL Video Productions
@David Lewis
by walter biscardi
There is no set size for creating your graphics for zoom. My general rule of thumb is double the size of the video frame if I know there's a need to zoom or do moves on the graphic.

Walter Biscardi, Jr.
Editor, Colorist, Director, Writer, Consultant, Author, Chef.
HD Post and Production
Biscardi Creative Media

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72dpi? Nonsense!
by Paul Roper
Even though your post was from a year ago, I felt compelled to comment - it is a total myth that "video is 72dpi". There is no such thing as dpi when it comes to video - it depends how big your TV is! It is purely pixels. A 1920x1080 image displayed on an HD1080 screen that is 10" wide will have a resolution of 192dpi. The exact same image displayed on a massive HD1080 screen, 16feet wide, would have a resolution of just 10dpi.

72dpi does not exist outside the world of print. The strange "72dpi for video" myth came into popular belief years ago and is completely misleading (there are some theories how it "came to be" - one explanation can be found here: http://www.scantips.com/no72dpi.html). It is only when something is printed to paper that its "dpi" is fixed, never before.

If someone gives you a file and says "it's 72dpi", you're probably going to have problems.
@Paul Roper
by David Lewis
Hi Paul!

Thanks for responding... when it comes to learnig something new or clarifiying an issue... time is no limit- I appreciate the information.

Since that last post I've been telling the graphic artists I work with to send me pictures at around 150 dpi (which I understand NOW, is irrelevant) and at around double the project size for zooms I may need to do. I guess I can go back to telling them to send them at 72 dpi now!

All the best and thanks again.

David C. Lewis
Editor- Director
DCL Video Productions
Re: Editing Tip: Still Image dpi vs. pixels
by John Davis
That was very helpful...Thank you!


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