What SIGMA lenses fit my full-frame Canon and Nikon DSLR cameras? SIGMA lenses with DG in the lens name — that do not have DN in the lens name as well — are designed for Canon and Nikon full-frame DSLRs. … Continue reading →

So yes, as long as a camera comes equipped with infrared lights, then it will work in the dark and provide fairly good visibility and images. Make sure when you choose your video surveillance equipment that you go with cameras … Continue reading →

Is it okay to leave camera on tripod? Unlikely. But you could end up stripping threads, damaging your camera mount, or weakening the tripod head locking mechanisms so that they are not as effective as they once were. Yes professional … Continue reading →

Standard/Normal Lens What is this? The standard lens has a fixed focal length (50mm, 85mm, 100mm), and reproduces fairly accurately what the human eye sees – in terms of perspective and angle of view. For a 35mm film camera or … Continue reading →

50mm lenses are fast lenses with a fast maximum aperture. The most basic 50mm lenses are typically F1. 8 – a very wide aperture. This means they are great for low-light photography (e.g. low-light portraiture or indoor shooting) as they … Continue reading →

What is the Difference Between a Four Thirds Camera & a Micro Four Thirds Camera? A Micro Four Thirds camera runs very similar to a standard Four Thirds, however it is even more compact. This is due to a smaller … Continue reading →

An adapter allows classes to work together that normally could not because of incompatible interfaces, by providing its interface to clients while using the original interface. Why do we need adapters in Java? An Adapter wraps an existing class with … Continue reading →

HDMI. If you’re looking for the best audio quality, HDMI is your choice. While an optical cable can still pass surround sound and super high-quality audio, thanks to the added bandwidth in the latest HDMI versions (2.0) you’ll be able … Continue reading →

List of lens mounts Mount name Flange focal distance Mount type Fujica X 43.5 mm Bayonet Fujifilm X 17.7 mm Bayonet Olympus Pen F 28.95 mm Bayonet Olympus OM 46 mm Bayonet What are the types of lens mount? Everything … Continue reading →

USB headsets bypass your computer’s sound card and use their own sound processing system, for better sound quality than 3.5mm headsets. USB headsets benefit from digital-to-analog processing outside of the computer. Does USB audio sound better than aux? USB cords … Continue reading →

How do you calculate the total magnification of two lenses? The total magnification is calculated by MULTIPLYING the ocular lens magnification and the objective lens magnification. Total magnification of a microscope is determined by adding the eyepiece lens magnification to … Continue reading →

thanks. F00 means the camera cannot establish electronic contact with a lens. Which is to be expected because you, in fact, do not have a lens with electronic contact. To allow your camera to shoot when F00 is displayed, you … Continue reading →

F stops generally range from f/1.4 (let in lots of lot for darker areas) to all the way to f/22 (let in little light for bright areas). A wider aperture will keep less of the scene in focus. A narrower … Continue reading →

A cable release is a device – generally a cord with an input on one end and a small remote on the other – that attaches to your camera and triggers the shutter to fire, as an alternative to pressing … Continue reading →

What is an on-camera microphone? An on-camera microphone is a special kind of mic that’s been designed to work well with a camcorder or a video-enabled DSLR camera. It’s typically lightweight (to help keep the overall weight of the camera … Continue reading →