How much can you zoom in on 4K footage in a 1080P timeline?

[Ann Bens]

You loose quality as soon a you pass the 100%.
Trial and error on how far you can go until it gets visible.
I sometimes zoom in but dont go 110%.

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Adobe Certified Expert Premiere Pro CC
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[Craig Howard]

Ann

He is talking about 4K in a 1080 Sequence.

He should be able to zoom in until he gets to the “equivalent 1080 sensor area” which would be approx. 200%

Craig Howard
Shooter Film Company
Auckland
New Zealand

Adobe CC2014 Suite, Resolve
Windows 7-64 bit:Assus P6T Deluxe Mob, 24 GB BM SDI Decklink, . HD Workflows

[Andrew Kimery]

[Craig Howard] “He should be able to zoom in until he gets to the “equivalent 1080 sensor area” which would be approx. 200%”

At 100% the 4k image is being displayed full size and since the OP is in a 1080p timeline that means a 4k image at 100% will appear ‘zoomed in’ on. Like the OP said, to see the entire 4k frame in his 1080p timeline he had to reduce the 4k image to 50%.

How much you can enlarge the 4k image beyond 100% w/o noticeable quality loss depends on the quality of the footage and how much fine detail is in the image. I’d say 110% is safe and maybe 120% if the footage is super clean and there’s not a lot of fine detail in the image. Since it’s an interview the person’s features (like their eyes) might start going soft. You can apply a little bit of sharpening to try and hide that.

[Craig Howard]

I had assumed that the OP would have already had the 4K in the 1080 Sequence displayed to fit properly in the 1080. ie 50% as base for scaling from.

Cant see any reason why he would have used a 1080 sequence at all if had intended to start off “cropped” at 50% and then be limited from there.

Craig Howard
Shooter Film Company
Auckland
New Zealand

Adobe CC2014 Suite, Resolve
Windows 7-64 bit:Assus P6T Deluxe Mob, 24 GB BM SDI Decklink, . HD Workflows

[Tero Ahlfors]

[Peter Vandall] “My question is, how much can I zoom in past 100 percent before there is quality loss?”

As much as the footage allows. Use your eyes.

[Peter Vandall]

Thanks everyone I appreciate all this information.

[James Strawn]

[Tero Ahlfors] “As much as the footage allows. Use your eyes.”
I second this, but modify it too say:
Until it starts looking bad in your external monitor, or wherever you plan to output to.

Software Quality Assurance – Digital Video at Adobe Systems

[Jp Pelc]

Yeah technically 100% is as far as you should go, but as stated before you can sometimes cheat just a few percent. It’s highly circumstantial. If your focus is at all soft you will notice it pretty quick when you go above 100%