Although you will need time to adapt to them, the significant majority of wearers get used to varifocal glasses within hours and overall success rate is over 98%. The latest designs with wider fields of vision and less edge/peripheral distortion … Continue reading →

A mode dial or camera dial is a dial used on digital cameras to change the camera’s mode. Most digital cameras, including dSLR and SLR-like cameras, support modes, selectable either by a rotary dial or from a menu. On point-and-shoot … Continue reading →

Sigma has posted a firmware update of SIGMA Optimization Pro, the dedicated software for the SIGMA USB DOCK, that enables the D5300 to be fully functional with the following lenses: 35mm F1. 4 DG HSM A012 NIKON. 17-70mm F2. Does … Continue reading →

Ringing is a procedure for sealing the edges of coverslips so that the mounting medium is no longer exposed to the air and evaporation of the solvent is inhibited. The ringing media harden fairly rapidly trapping the fluid mounting medium … Continue reading →

Focal lengths and lenses used by great directors S. No. Director Focal length, Lens 3 Roman Polanski 18mm, 40mm anamorphic (Chinatown) 4 Wes Anderson 40mm anamorphic, 27mm (The Royal Tenebaums, The Grand Budapest Hotel) 5 Quentin Tarantino 40mm or 50mm … Continue reading →

Panasonic Lumix DMC-GH4 Overview Type Micro Four Thirds system Lens Lens Micro Four Thirds system mount Sensor/medium What lens mount is Panasonic GH4? Micro Four ThirdsThe Panasonic GH4’s Micro Four Thirds (MFT) mount may just be the most versatile lens … Continue reading →

With these caveats, the Nikon 50mm f/1.8 G is among Nikon’s sharpest lenses. As expected for the latest aspherical designs at any price, the 50/1/8 G is sharp at every aperture. At f/1.8, it’s only slightly less sharp in the … Continue reading →

As a professional photographer for four decades, the short answer is of course professional photographers use camera straps and on rare occasions we take them off; though when they are on, we rarely use the “stock” or lightweight camera straps … Continue reading →

A condenser is an optical lens which renders a divergent beam from a point source into a parallel or converging beam to illuminate an object. Condensers are an essential part of any imaging device, such as microscopes, enlargers, slide projectors, … Continue reading →

It is no coincidence that Henri Cartier-Bresson preferred a 50mm lens on his Leica 35mm rangefinder camera. His special ability was to use a 50mm lens but allow the photo to “breathe” almost as if shot with a 35mm. What … Continue reading →

The typical minimum focal length of the human eye is 22.7 mm (2.27 cm). The typical maximum focal length of the human eye is 25 mm (2.5 cm). Therefore, the nominal focal length of the human eye is generally taken … Continue reading →

Tamron’s 90mm macro lens, often referred to as “the portrait macro” and loved by photographers all over the world, is now reborn as a Di lens that is perfect for use with both film and digital cameras. The item includes … Continue reading →

Do you need a UV filter with a lens hood? It’s entirely up to you whether you use a lens hood or a UV filter. It mostly depends on what you’re looking to get from either of these, as well … Continue reading →

So we have good news, and we have bad news: audio quality is affected by the wire length, but some cables are better at protecting the sound and minimizing interference. Common workarounds are getting thicker cables, or getting cables with … Continue reading →

USB speakers: You can plug USB speakers or headphones into any USB port on the computer. Can USB port be used for audio? USB Audio Class 1.0 supports up to 32-bit/96kHz or 16-bit/192kHz stereo audio. However, Android’s default implementation caps … Continue reading →