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

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Peter VandallHow much can you zoom in on 4K footage in a 1080P timeline?
by on May 14, 2015 at 9:34:29 pm

Hi,

I shot an interview in 4096x2160. I am cutting in a 1080P timeline. When I place the footage into the timeline, scale at 100 percent shows how big the footage is in relation to 1080. I need to scale down to 51 percent in order to fill the frame.

My question is, how much can I zoom in past 100 percent before there is quality loss?

Thanks,

Pete V



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Ann BensRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 14, 2015 at 10:54:38 pm

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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Craig HowardRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 15, 2015 at 12:22:30 am

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



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Andrew KimeryRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 15, 2015 at 3:15:39 am

[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.


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Craig HowardRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 15, 2015 at 5:22:58 am

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



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Tero AhlforsRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 15, 2015 at 6:39:09 am

[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.


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Peter VandallRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 15, 2015 at 2:51:39 pm

Thanks everyone I appreciate all this information.



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James StrawnRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 15, 2015 at 3:56:33 pm

[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


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JP PelcRe: How much can you zoom in on 4K footage in a 1080P timeline?
by on May 19, 2015 at 8:36:39 pm

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%


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