Tag Archives: In Depth

In Depth: Keying: Part 5: Hawaiki Keyer

This is an article that I wrote for the In Depth Series on Keying that I’ve been working on over the past year or so. I’m reprinting it at Green Screen Made Easy. 

Introduction

In this sub-series in my In Depth: Green Screen series, I’m giving in-depth information on some of my favorite keying tools that work with After Effects, Premiere Pro, and other tools. The first in the series, In Depth: Keying: Part 4: Red Giant Primatte Keyer and Key Correct, went up this summer. After months of nasty computer issues, here’s the second article.

Hawaiki Keyer 3.0 Overview/Review

I’ve pretty much said everything that I need to say in the overview/review video, so this article is a bit on the short side. To sum it up, Hawaiki Keyer v3 does a great job of pulling keys from areas with feathery hair and sheer fabrics. I was impressed. I’ve tried a lot of keyers and it works really well, especially for the price. If you’re doing much keying and looking for a quality keyer that’s inexpensive, take Hawaiki Keyer for a spin. Try a demo first, if you don’t believe me!

Hawaiki Keyer 3.0Hawaiki Keyer v3

MSRP: $99.00
Toolfarm Price: $94.05

Download a free demo

Hawaiki Keyer System Requirements

Hawaiki Keyer works in After Effects, Premiere Pro, Final Cut Pro X, and Motion. Hawaiki Keyer is Mac only and requires FxFactory to run. FxFactory is a free download.

Hawaiki Keyer 3.0 Manual

Download the Hawaiki Keyer 3.0 Manual

Try a free demo of Hawaiki Keyer

FxFactory can be downloaded from the Toolfarm Downloads page (you must sign in first) and the demo version of Hawaiki Keyer can be installed through FxFactory. There are lots of freebies in FxFactory too!

Other Articles in the In Depth: Keying Series

I’ve done many articles in this In Depth Series on keying tools and several have featured Primatte Keyer and Key Correct. Here are a few.

In Depth: Keying: Part 4: Red Giant Primatte Keyer and Key Correct

PrimattePrimatte Keyer, Key Correct, and Warps have been used in a few major Hollywood blockbusters you may have heard of, such as Harry Potter, Lord of the Rings, Spider-Man, The Matrix, and King Kong. Both products Primatte Keyer and Key Correct are included in Red Giant Keying Suite, along with Red Giant Warp which includes six powerful plug-ins to help in compositing with control of shadows, reflections, glows and corner point warps. Warp runs in After Effects, Premiere Pro, and Apple Motion.

Read In Depth: Keying: Part 4: Red Giant Primatte Keyer and Key Correct

In Depth: Spill Suppression on Keyed Footage

In Depth: Spill Suppression on Keyed Footage

From the article: Spill is the colored light reflected from your background and onto your actor. Spill can show up on light colored clothing or hair, on shiny or reflective elements, around the edge of footage, and it can be a big problem! It can be very easy to fix, or difficult on finely detailed, extremely reflective or semi-transparent areas.

Primatte Keyer and Key Correct use the same Spill Killer technology. Both products are available together in the Red Giant Keying Suite. Spill Killer is very simple at the core. There are not a lot of bells and whistles, but it worked well on the footage. I used slightly different settings for Tolerance so that you can see the difference.

For Primatte Keyer, Enable Spill Killer needs to be checked and the Color Mode set to Green. I set the Range to 58% and set Tolerance and Strength to 100%.

To remove the spill with Key Correct Spill Killer, you just need to apply the effect to your layer. I turned down Tolerance to 51%, and the Range to 58%, which helped to avoid giving the model a red face.

Read In Depth: Spill Suppression on Keyed Footage

In Depth: Keying: Pre-Processing Greenscreen Footage for Keying

In Depth: Keying: Pre-Processing Greenscreen Footage for KeyingIf your green screen footage didn’t turn out as perfectly as you had hoped, here are some things that you can do to fix problems and not create new ones.

Read In Depth: Keying: Pre-Processing Greenscreen Footage or Keying

In Depth: Keying: Introduction & Frequently Asked Questions about Shooting Greenscreen

In Depth: Keying: Introduction & Frequently Asked Questions about Shooting GreenscreenKeying is part technical skill, part patience, and part sorcery. This series will take you through different areas of keying, not so much to teach you step by step, but to talk about some of the problems you’ll run into and how to fix them.

Read In Depth: Keying: Introduction & Frequently Asked Questions about Shooting Greenscreen

Also check out…

Green Screen Made Easy, 2nd Edition

Green Screen Made EasyGreen Screen Made Easy, 2nd Edition

If you’d like more on keying tools and compositing, Green Screen Made Easy, 2nd Edition, which I co-authored with Jeremy Hanke of Microfilmmaker Magazine, is now available. It covers everything from creating your own green screen, setting up lights, keying your actors, fixing problems, and compositing methods and tricks.

Order today!

Toolfarm Professional Training for Primatte Keyer Pro: Toolfarm Expert Series

Professional Training for Primatte Keyer ProLearn the Method, Not Just The Software! Angie Mistretta demystifies the complex and powerful Primatte Keyer Pro plug-in from Red Giant Software, which can pull the matte, adjust spill suppression, handle color correction and handle the entire process of keying and matte creation. This training has been out for several years but it is still top-notch.

Get Toolfarm Professional Training for Primatte Keyer – Just $19!

In Depth: Fast and Easy Garbage Mattes in After Effects

I did a video over at Toolfarm that explained a simple technique to create super quick garbage mattes in After Effects.

Continuing with the series on keying, I decided to make this segment a video segment. All you need is After Effects for this one. Older version such as AE CS6 or even AE CS3 will work just fine.

Before you watch the video, here are a couple notes… in other words, stuff I forgot to mention in the video!

  1. You will still need to use a mask to remove equipment, the edges of your greenscreen or other stuff from your shot.
  2. This technique should work on most greenscreen footage but if it’s really poorly lit or shot greenscreen, best of luck to you. There are no guarantees!

Other articles in this series on Greenscreen:

This video was captured with Telestream ScreenFlow.

Looking for more keying training?

In Depth: Keying: Introduction & Frequently Asked Questions about Shooting Greenscreen

Greenscreen

Keying is part technical skill, part patience, and part sorcery. This series will take you through different areas of keying, not so much to teach you step by step, but to talk about some of the problems you’ll run into and how to fix them.

Check out this recent article I wrote as Part 1 to my In Depth Series on Greenscreen and Keying at Toolfarm!


Introduction

The scenario for this series of articles is that you have less than perfect greenscreen footage. How could that happen?

  1. You’re a novice filmmaker and you have never done any greenscreen work before.
  2. If you’re getting the footage from someone else and not involved with the shooting, you often don’t know what you’re going to get. I worked with producers at my old post-house who would bring in the footage and we did the magic. While we could have shot it in our studio, producers often wanted to save money and do it themselves. Also, if you join a film production after the film is already in full swing, you may not be able to be involved.
  3. Your equipment is not “professional”.

If your footage is crummy (i.e.: noisy, not properly lit, not properly shot, badly planned), no amount of post production will make it look good. “Garbage in, garbage out”, as they say. This series of articles will focus on problems that you’ll run into with less than stellar footage. This is not so much a “how-to key” article and I may not go in order as far as work flow, but I will talk about some issues you may run into in the post production process.

For this first article, I’m going to address some of the commonly asked questions I’ve had about working with greenscreen. These are mostly questions about production, not post production. The post production questions will be answered in future articles specific to topics such as spill, edge correction, holes in the matte, garbage mattes, light wrap, compositing tricks and more.

I want to give a special thanks to filmmaker Jason James, who gave me a bunch of footage to use in my book, Plug-in to After Effects. I’m re-utilizing some of the footage in this greenscreen series. Check out Jason’s film Dirty Bomb.

Jeremy Hanke and I co-authored a greenscreen book called Greenscreen Made Easy: Keying and Compositing Techniques for Indie Filmmakers. Although the title says “Indie Filmmakers” the fact is, it’s the perfect book for anyone who is new to keying or hasn’t done it in a while. We specifically wrote the book in a no-fluff manner, and very straight forward, because, hey, who has time for extraneous facts?

Jeremy wrote the first half of the book, which dives into topics like lighting, making your own  live monitoring, etc. I wrote the second half, about post production.

Keying Terminology

I’ll be throwing around a bunch of fancy words and so you know what I’m talking about, here’s a rundown of a few that I mention in this article.

Chroma Keying – You might have noticed that term just above. Chroma means color. Keying refers to removing an object by “pulling” the color or range of color from the foreground layer to make an area transparent, revealing the layer behind it.

Foreground (FG) Plate  – the greenscreen footage layer

Background (BG) Plate – the content that goes behind your keyed footage. This can consist of elements such as video, photographs, composites, 3D renders, and matte paintings.

Clean Plate – The greenscreen with nothing in front of it. Rolling 5-10 seconds of your greenscreen without your actors in it, can save you hours in post. Normally this shot is a locked down shot or you are using a motion controlled camera.

Spill – Reflected green on your subject.

spill

The collar of her coat has some very bad spill. Spill is easier to fix that you might think. I’ll go into that in a future article. Footage: Hollywoodcamerawork.com

Keying FAQ (Frequently Asked Question)

Which is better: green screen or blue screen?

If you’re shooting digital, most people will tell you to go for green. The question is a lot more complicated than this and has to do with color sampling. Digital green is brighter than digital blue. Lightcraft Technology has a nice article on their site that explains this.

motion blur

Notice how light the greenscreen background looks in the green channel.

Green and blue are much less prominent in skin tones than red so its easier to pull a key with those hues without screwing up the skin tone. You can really use any color. It will depend on what you are shooting.

Did you know that the first film to use keying technology was Mary Poppins and they did not use blue or green? They used the Sodium Vapor Process in which an actor is filmed in front of a white screen that is lit with powerful sodium vapor lights which glow in a very narrow spectrum. A special camera with a prism separated the created a matte and a counter matte. This technique was very accurate and did not create problems with spill or skin tones but was very expensive.

motion blur

Mary Poppins Image Source: nzpetesmatteshot.blogspot.com

What is the best shade of green to use for green screen? What should I make my greenscreen out of?

There are chroma paints, papers and curtains on the market that are exactly the shade of green you need, but they can be expensive. I highly recommend Greenscreen Made Easy: Keying and Compositing Techniques for Indie Filmmakers, and not just because my name is on the cover! Jeremy, my co-author, has a fantastic method of making a greenscreen on the cheap with linoleum, PVC pipe and paint. Plus, he did hundreds of color tests and found a shade of Olympia paint that is very close to the more expensive chroma paint.

If you’re doing it on the cheap, the key is to get the green as saturated as you can and a slightly brighter shade green.

It’s not just the color to consider, but the surface. If you’re using fabric, make sure that it’s not wrinkly or that you can’t see through it. Make sure you don’t have texture on your greenscreen either. I kid you not, I was sent some footage that was shot over plush green carpeting. The color of the carpet wasn’t bad but the texture was impossible, with shadows from the tufts of carpet. I’ve also seen a greenscreen painted with glossy paint which made hot spots a big problem.

Should I shoot my subjects over greenscreen or gather my BG plates first?

Get your background elements together first. It’s much easier to match lighting and camera angles in a studio with your actors than it is with background elements, especially if you’re using footage that you have no control over like stock footage.

bg plate
If you can’t shoot on location in Korea with your actors, make sure you have your background plates first so that you can match position and light your actors properly in the studio.

When you are shooting your greenscreen elements, use the background elements as reference. Either print out screen grabs, watch it on a laptop on set, or better yet, use a live keyer to test key your shots. Make sure your lighting angles and camera angles are right. It’s much easier to shoot it right than to fix it in post!

What are the best camera settings to use when shooting greenscreen?

Use the highest quality settings that your camera will allow, and capture your footage with the highest quality settings as well.

Set your camera to manual. You don’t want your camera to auto focus or auto iris as the actor moves through the frame.

Use a shallow depth of field to keep your subject in focus while blurring your greenscreen. This will hide any wrinkles in fabric greenscreens or any flaws. We’re not talking super shallow. In other words, with some lenses, you can have your actors hair out of focus and their nose in focus. You’ll want to keep all of your foreground elements sharp and soften your background only. Note: If you’re using tracking dots, do not use a shallow depth of field.

Do Not Use In-Camera Sharpening. This will increase contrast around the edges of your subject causing a halo or jagged edges.

motion blur

Notice the funky artifacting around the edges of the subject, likely due to the compression and the in-camera sharpening algorithms.

Motion blur is a big problem to key, so shoot with a high shutter speed. Motion blur is very easy to add in post with RE:Vision Effects ReelSmart Motion Blur, which is not expensive and looks realistic.

motion blur

Motion blur is problematic, so shoot with a fast shutter speed to minimize motion blur.

Shoot progressive so you don’t lose half of your resolution when you remove field interlacing. Yes, you can key interlaced fields, but if you’re shooting vertically and plan to rotate or scale interlaced footage, you’re inviting a mess of problems.

scaling fields

Scaling fields is problematic!

You can try using a polarizing filter to manage glare and reflections, if you’re shooting a car, glass or other reflective surfaces. This is not a magic bullet (that is something entirely different!) and will change your colors so use it with caution.

Why should I shoot a clean plate?

Some keyers, like PHYX Keyer, Ultimatte (remember Ultimatte!? People loved Ultimatte but it’s no longer updated for Adobe products) and DV Garage DV Matte, will utilize a clean plate to help you pull a cleaner key by comparing the clean plate with the footage with your actor. When you’re shooting your clean plate, make sure you use the exact same settings as you do with your actor. Don’t zoom or refocus the camera lens reposition the camera or lights.

clean plate

This is a clean plate. Don’t get too excited.

What about using a luminance card for matching black levels in post? What does this mean and why should I do this?

Nothing yells “fake” like mismatched black levels between the background and foreground elements. A cheap and easy solution to matching them is to create your own card with a square each of black, 50% gray and white. Shoot 5 seconds before you shoot your greenscreen footage and your background plates. Just match them up by adjusting levels during your color correcting portion of the process (after keying).

luminance card

What is the #1 thing that most people don’t do when they’re shooting greenscreen that will cost them the most time and money in post?

Oh, that one is easy! Prepare and test! Take some test shots and if you’re on the VFX team, get involved in pre-production.

Let me tell you a little story about a film I worked on a couple of years ago. It was a low budget production with a talented DP and a director who had not worked on visual effects before. I joined the crew right as principal shooting was beginning. There were no storyboards, just the directors descriptions. When we go to the big scene, I finally realized what was going to be needed so I suggested that they get a large greenscreen and hang it above the set. They didn’t have any budget for this so the costume designer sewed together some bright green fabric. The color or the fabric was very close to what I needed, however, the lights behind it caused it to be very unevenly lit and it needed to be so high in the air that it was much too small. Because it was so high in the air and strung up with ropes, it wasn’t as taut as it should be and it waved and billowed. I bought ALL of the fabric from that store and we were out of time and budget anyway.

It’s probably needless to say but the shot didn’t turn out at all. I left the production before the end but I highly doubt they ended up using those shots. I saw the rough cut and they used 3D instead.

Other shots in the film used a smaller greenscreen and shots were so dark that it was impossible to get a decent key. Oh how some storyboards and getting some VFX people involved before shooting could have saved a lot of headaches, money, time and rotoscoping!

  1. Be prepared. Make sure everything is storyboarded out before your test. Make sure your angles will work and your greenscreen is not too close or far from your actors. Have printouts or some reference of your background elements so that you can match angles and lighting.too close
  2. Make sure your actor is not standing too close to your greenscreen because it will cause shadows.
  3. Proper lighting of your actor and greenscreen is CRUCIAL. Don’t over light or under light. It’s easier to increase the exposure of darker footage than it is to fix footage that has areas blown out, but underlit footage can cause dark shadows along the edges of your actor.
  4. Shoot test shots with actors (or stand-ins) in costume. You’ll want to make sure the costumes don’t bring in problems with the color, reflectivity or surfaces that are difficult to key. Colors look different over green screen.
  5. Make sure you don’t have bad spill on your actor. This is often tough to see on set and you won’t know until you do some test keys. Maybe the bright green burns the retinas. I don’t know. Believe it or not, grays and tans can look slightly green and will cause issues with color change when you’re keying.
  6. Look closely at your greenscreen. Make sure you can’t see light through your greenscreen and that it’s not too wrinkly or moving. Look for hot spots and shadows. Make sure it is evenly lit, especially in the areas where you will need to key around your actor.evenly lit
  7. Test camera settings.
  8. Slate your tests and take notes as you make changes. When you get back into your NLE to check your tests, cross reference what worked and what didn’t.

Yes, it will definitely take extra time up front, but this can potentially save days from your post-production budget and can save your entire film.

Stay tuned for the next article in this series which begins the focus on post-production.