If you wear varifocal prescription glasses your eyes will appear bigger in one place and smaller in another. When you apply your make up you will need to take this into consideration. In most cases, the top half of the … Continue reading →

Currently, SIGMA offers several lenses that are designed exclusively for full-frame mirrorless cameras in Sony E-Mount, as well as L-Mount Alliance cameras from SIGMA, Leica and Panasonic. Do sigma lenses work on Sony E-mount? In addition to a growing line … Continue reading →

25.1×16.7 mm. Advanced Photo System type-C (APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C (“Classic”) format, of 25.1×16.7 mm, an aspect ratio of 3:2 and Ø 31.15 mm … Continue reading →

Security systems can do more than deter burglars. The right system can keep you linked to your home no matter where you are. It will also let you know when doors are opened and closed and if attempts are made … Continue reading →

The Canon EF-M lens adapter kit for Canon EF/ EF-S lenses enables you to mount Canon EF and EF-S lenses onto the Canon EOS-M mirrorless Digital Camera, which has an EF-M lens mount. It is fully compatible with all lens … Continue reading →

An equatorial mount is made up of a tripod and a mount head, which holds the telescope and moves it about on two axes, one called right ascension (RA; east-west) and the other called declination (Dec.; north-south). The mount may … Continue reading →

Generally, pro lenses deliver better optical performance than lesser lenses, quicker and more accurate autofocusing, and are more ruggedly built. They also offer the fastest maximum apertures, so you can use lower ISO settings or shoot in dimmer light. What … Continue reading →

A telephoto lens is a long-focus lens that allows photographers to utilize a focal length that is in fact shorter than the lens’ physical length. What’s the difference between a zoom lens and a telephoto lens? The basic difference between … Continue reading →

How do you remove tempered glass from camera? Use a toothpick to create a gap between the tempered glass protector and the screen. The goal is to lift the screen protector up from each corner. When you can, fit a … Continue reading →

So (@Rob_92) tweeted the West Midlands branch of Highways England saying: “Why is there a speed limit of 60mph on the M42? Hardly smart, it’s not even busy! Does M42 have speed cameras? This M42 Active Traffic Management (ATM) scheme … Continue reading →

A breech-lock is a system for mounting camera lenses to camera bodies. The lens is attached to the camera by means of a rotating ring which is used to tighten the lens to the camera by friction. Other methods for … Continue reading →

The distance between the projection plane and the lens of the camera is image distance. Object distance can be obtained by applying image distance to lens formula. This method is proved to be effective and a single distance measurement can … Continue reading →

The Canon RF lens mount is an interchangeable-lens mount developed by Canon for its full-frame mirrorless interchangeable-lens cameras, and featured first by the EOS R, followed by the EOS RP. The RF mount was announced in September 2018. What’s the … Continue reading →

The lens is the camera’s most important part. More than any other camera component, the lens determines the quality of the image. The most important part of a camera is its lens since the quality of an image is so … Continue reading →

The method usually employed to preserve a specimen of a fungus colony which has been prepared for microscopic study is to “ring” the edge of the cover slip with balsam, petrolatum, de Khotinsky cement, melted shellac or some similar preparation. … Continue reading →