Why is it important that crystal violet be a contrasting color to safranin? The contrast allows you to differentiate between gram-negative and gram-positive cells by observing the color of the organism. What is the purpose of crystal violet in Gram … Continue reading →

What Makes Camera Tripods Universal? Almost all modern tripods have a 1/4 inch thread on which you would mount a camera. Almost all consumer and prosumer cameras also have a 1/4 inch female thread, which technically means that all cameras … Continue reading →

Base. Base: The bottom of the microscope, used for support. Which part provides support to the microscope? The Microscope Base The base provides stability and support for the microscope when it is upright. The base also typically holds the illuminator, … Continue reading →

For work with the high-dry (40x) and oil-immersion objectives (100x), however, the diaphragm should be closed slowly while looking at a sharply focused section until the level of illumination is just slightly reduced. This is the setting of the condenser … Continue reading →

shutter, in photography, device through which the lens aperture of a camera is opened to admit light and thus expose the film (or the electronic image sensor of a digital camera). Adjustable shutters control exposure time, or the length of … Continue reading →

Can you use varifocals for driving? Yes, you can drive in varifocals, they’re especially useful if you struggle to see both near and far. With the need to switch between a satnav/dashboard (near), the road (intermediate vision) and distant road … Continue reading →

Why are Gram-positive bacteria unaffected by the counterstain (safranin)? The Gram-positive cells are not affected by the counterstain because they are composed of 90% peptidoglycan. This acts as a seal so it retains its purple hue. Why do Gram positive … Continue reading →

Enhanced Reading Lenses and Occupational Progressive Lenses An easy solution to these problems are Enhanced Reading Lenses. These lenses are a great alternative to varifocals and offer a big benefit of larger mid-range and near areas and extra range to … Continue reading →

What is the advantage of the Gram stain over a simple stain such as methylene blue? Gram staining highlights different bacteria types through the use of special dyes. It aids in the diagnosis of a specific organism and tells the … Continue reading →

Canon Inc.. ( キヤノン キャノン 株式会社, Kyanon kabushiki gaisha) is a Japanese multinational corporation headquartered in Ōta, Tokyo, Japan, specializing in optical, imaging, and industrial products, such as lenses, cameras, medical equipment, scanners, printers, and semiconductor manufacturing equipment. Which is … Continue reading →

Manual over automatic. Focus peaking allows you to take advantage of many manual lenses to make manual focusing even more effortless. “You’re going to want to use it more with manual focus than with autofocus because, with manuals, you’re going … Continue reading →

Fujifilm has four (or three, depending on how you look at it) Manual Focus Assist modes. They can be cycled by long-pressing the rear command dial on cameras that have a rear command dial. Which Manual Focus Assist modes are … Continue reading →

The Olympus OM System was a line of 35mm single-lens reflex cameras, lenses and accessories sold by Olympus between 1972 and 2002. The system was introduced by Olympus in 1972. The range was designed by Yoshihisa Maitani, chief designer for … Continue reading →

An iris is a ring found around the outside of the camera lens that you use to adjust the aperture itself. Your iris also keeps track of your f-stop — or the number that measures how much light the aperture … Continue reading →

A C mount is a type of lens mount commonly found on 16 mm movie cameras, closed-circuit television cameras, machine vision cameras and microscope phototubes. C-mount lenses provide a male thread, which mates with a female thread on the camera. … Continue reading →