The Difficulties of Macro Focusing The first is depth of field. Because you are so close to the subject, usually with a moderate telephoto lens, the depth of field can be very shallow indeed.Any slight movement closer or further from … Continue reading →

This is probably the most common reason that your camera won’t focus. The camera and lens both have metal contacts that must be in communication with each other in order for them both to function properly. If the lens isn’t … Continue reading →

Why is line important in photography? Lines are an element of design and so add to the composition of an image. They direct the viewer’s eye into and along a photo to the focal point. They also impact the mood … Continue reading →

A filter is a device used to remove unwanted parts from something. For example, removing solid particles from a liquid. Filter can also mean the act of filtering: it can be used as a verb. The different branches of science … Continue reading →

So How Much Power (Watts) Does a Security CCTV Use? A typical CCTV camera consumes between 4 watts to 15 watts of power depending on the model, while the DVR device that is connected with the CCTV camera consumes from … Continue reading →

Residential examples of low voltage systems include doorbells, garage door openers, home security sensors, thermostats, and landscape lighting. Commercial low voltage systems cover a wide array of categories, from fire protection to security systems to sound and communication. Is a … Continue reading →

Most of the analog security cameras I use only require 0.5 to 1 amp at 12V DC. Some with a PTZ (pan, tilt, zoom) feature may need 2 amps. The amount they use also varies from day to night because … Continue reading →

But, according to Zachary Karabell, this thing we call the economy — this thing that we constantly measure with specific numbers — wasn’t really invented until the 20th century. “It was invented because of the Great Depression,” says Karabell, who … Continue reading →

Absolutely not. One 220 circuit, one receptacle only. The only remote possibility would be to connect the wiring from the dryer receptacle (if it’s got 4 wires – hot, hot, neutral AND ground) to a sub panel with 2 separate … Continue reading →

The quickest way to extend power outdoors is to install a receptacle back-to-back with one inside the house. You also can drill through the wall from a basement or crawlspace and attach a receptacle on the side of a house … Continue reading →

Yes. For code-compliance purposes: Each 14 gauge wire is 2 cubic inches, each 12 gauge 2.25. What can I use instead of a junction box? Types of Devices That Don’t Need Boxes Recessed lights (“can lights”) Bathroom ventilation fans. Wall-mounted … Continue reading →

Emphasis?is defined as an area or object within the artwork that draws attention and becomes a ?focal point. Focal point ?refers to an area in the composition that has the most significance – an area that the artist wants to … Continue reading →

Positive space is any part of the photo that jumps out from its surroundings. That includes your subject, for example, along with other noteworthy areas of detail. Negative space is just the opposite — parts of an image that don’t … Continue reading →

In communities across the country, from Old Lyme, Connecticut to San Antonio, Texas, green porch lights are displayed during Lyme Disease Awareness Month every May. It’s estimated that more than 300,000 people in the U.S. are diagnosed with Lyme disease … Continue reading →

Lighting is a key factor in creating a successful image. Lighting determines not only brightness and darkness, but also tone, mood, and atmosphere. Therefore, it is necessary to control and manipulate light correctly in order to get the best texture, … Continue reading →