To clean the microscope eyepiece or the microscope objective lens, moisten lens paper with lens cleaning solution and clean the lens with a circular motion. You can dry the lens with a clean, dry piece of lens paper and when you are finished use an aspirator to remove any lingering dirt or particles.

Hold the microscope with one hand around the arm of the device, and the other hand under the base. This is the most secure way to hold and walk with the microscope. Avoid touching the lenses of the microscope. The oil and dirt on your fingers can scratch the glass.

It allows for better control of the slide in addition to avoiding accidental bumping that may knock the slide out of focus. Moreover, it allows a systematic scanning of the slide so that the entire specimen can be viewed.

The stage serves as a space for actors or performers and a focal point (the screen in cinema theaters) for the audience. As an architectural feature, the stage may consist of a platform (often raised) or series of platforms.

Mechanical Stage: A flat mechanism that sits on top of the stage and allows the viewer to move a specimen small distances – a task that is otherwise difficult at higher magnifications. Most mechanical stages are equipped with an X and Y axis so the viewer can see how far the slide has moved.

Functions of Stage Lighting

• Visibility. If the audience can’t see the actors, everything else the lighting designer does is a waste of time.
• Mood. “Mood” (or “atmosphere”) is the evocation in the audience of the appropriate emotion.
• Composition.
• Plausibility.
• Reinforcement.
• Revelation of Form.
• Punctuation.

Summary: Every light you use should fulfill one of five roles: key, fill, backlight, set, effects. If it isn’t, turn it off.

Visibility is the most obvious function of stage lighting.

The key light is vital for video production lighting: it is placed about 45 degrees to the subject, either left or right, usually above and aimed down between 30 and 45-degrees. It is the dominant light. Position this light as you would if it were the only light you had.

Three-point lighting is basically a method or a type of lighting setup where you have three distinct light source positions to illuminate a subject in a scene. It is not a formula or a set standard, but rather a guide as to how and where to place your light sources so as to light your subject and scene.

The fill light is usually about only about a quarter as bright as your key light — about two stops dimmer. You place it on the opposite side from the key light, at about the height of the camera.

The purpose of 3-point lighting—which is used in traditional photography, cinematography, and 3D visualizations—is to properly illuminate a subject in an effective and pleasing way by simply using three separate lights.

3 Basic Types of Lighting

• Ambient lighting.
• Task lighting.
• Accent lighting.

Three-point lighting is a traditional method for illuminating a subject in a scene with light sources from three distinct positions. The three types of lights are key light, fill light, and backlight. Key light. This is the primary and brightest light source in the three-point lighting setup.

3.12 Low-angle lighting is sometimes called “Light from Hell.”

Striplights are often used to color a cyclorama, or can alternately be positioned behind the proscenium arch to provide a general overhead color wash. Often, in older and low budget venues such as churches and schools, striplights are the primary lighting source.

Top lighting. It separates the object or actor from the background by casting form of shadow that comes from the lower portion of the object. Hope this is right.

Both tungsten film lights and ordinary domestic incandescent lamps use a tungsten filament to produce light. The primary difference is that tungsten film lights use halogen (an inert gas) to achieve higher color temperatures.

Tungsten lights Tungsten lighting kits for film and video production have been a tried-and-true, industry-standard lighting choice for years. They’re similar to the incandescent filament bulbs common in interior lighting, so they are a great choice for interior lighting setups.

Color temps are measured in degrees of Kelvin, with the scale ranging from 1,000 to 10,000. During the daylight hours, it’s best to keep your monitor relatively cool with a default color temperature of 6,500K. At night, the color temperature should be warmer, and around 3,400K.

Halogen bulbs

While cool white look great in modern kitchens and where the brighter the better, warm white works much better where you are looking for softer light. It’s particularly well suited to lounges, living rooms and traditional kitchen, like country styles, where the white light contrasts too much with the rest of the room.

Light around 2700K tends to have a warmer, cozier feel and is more flattering to skin tones and warmer color palettes. Light around 3000K has a brighter, crisper feel and tends to be more flattering to cooler color palettes it reads as more of a neutral white light.

If you’re specifically looking to convert your cool LED bulbs to warmer color temperatures, you need orange or red gels. These are often called CTOs (color temperature orange). Depending on the strength, orange gels can neutralize a cool LED or completely transform it into a warm white.

The Australian National University found that overexposure to “cool” or “bright white” fluorescent bulbs for over 45 hours a week put your eyes at risk for many health issues, such as cataracts and pterygia. The reason why these light bulbs are so bad for your eyes is because they emit an amount of UV rays.