Sometimes it is needed to get an “invisible emitter”: An emitter not only being hidden to camera, but also not casting shadows in the scene, remaining completely invisible to the render but its emission. A very useful trick for photographers and cinematographers.
The material for an emitter to be invisible must have (obviously) the emitting component plus one single BSDF that must be set with Transmittance pure white (255) and Nd=1 (mimicking the vacuum).
Then just hide that emitter to camera and your emitter will be invisible and cast no shadow.
This videotutorial also explains how to set up an invisible emitter: (the video has been recorded in Maya, but this principle is 3D-platform independent)
Westcott, one of the Official Sponsors at Photoshop World, wanted to create an area and atmosphere at Photoshop World Conference & Expo where photographers can feel comfortable in a photo-shoot setting. Attendees are able to learn lighting and become more knowledgeable while adding beauty photographs […]
The Curve dialog in Photoshop hides some surprise features that aren’t immediately apparent at first glance. In Photoshop CS3 and later, one surprise is that you now have the adjusters under the chart that you’re used to using in the Levels dialog inside Curves. So […]
When it comes to taking photos of sports or other fast-moving subjects, you’d imagine that freezing the action is your best bet – and certainly that’s the case for some situations. But in others you’ll end up with a lifeless shot which looks static and […]
After many years as a keen amateur photographer, I decided to start a small landscape photography business called Lakescenes which I ran alongside my main job as an IT Manager. As business increased, I found myself working long, but rewarding, hours just to keep up […]
Rob Sheppard is a naturalist, nature photographer and videographer who says his favorite location is the one he is in at any time. He is the author/photographer of over 40 books, as well as a well-known speaker and workshop leader, and a Fellow with the […]
Gary Hart has photographed California’s natural beauty for over 30 years. Gary’s photos and writing have appeared in many publications, most recently Outdoor Photographer and Sierra Heritage magazines. You’ll also find his images in greeting cards, postcards, calendars, and many galleries and private collections throughout the world.
Originally from Poland, based in London UK, Jaroslav has background in Fine Arts, degree in Architecture, and wide array of experience. Being an Architect taught him how to be resourceful and to solve complex problems with simple, yet innovative solutions. Constant passion for graphic & […]
Architectural photography is a very rewarding subject. However, it does take practise and experimentation to get right. If you’ve a hankering to try architectural photography these four tips will prove useful… Choose your lens wisely The closer you are to a building, the more likely […]
Watch this photography tutorial video to learn the art of color correction and setting custom white balance. Color is a visual property of perception. Camera chip interprets the light that passes through the lens in a similar way as our brain interprets the light passing […]
The lightmeter in your digital camera is astonishingly clever. The default mode is known as Evaluative (or Matrix). This mode breaks a scene up into chunks, each of which are measured independently. And then, after a microsecond of thought juggling such factors as where the […]