Brightness is black level and contrast is white level. Now, what are we doing when we change those controls? Black level/brightness refers to the minimum level of light a display will produce. White level refers to the maximum level of … Continue reading →

Knee airbags are increasingly common in passenger vehicles, but new IIHS research shows they have a negligible effect on injury risk. Airbags are essential, lifesaving devices that have prevented tens of thousands of deaths. Are knee airbags required by law? … Continue reading →

The Best Minolta Lenses: Our Picks Minolta 85mm f/1.4. Minolta MC Rokkor 58mm f/1.2. Minolta 100-300mm f/4.5-5.6 APO D. Minolta 35-105mm f/3.5-4.5. Minolta 70-210 f/4. Minolta 28-85mm f/3.5-4.5. Minolta 100mm f/2.8 Macro. Minolta 50mm f/1.7. What lens mount is Minolta? … Continue reading →

Most of Alexa’s functionality is 100% free. The only thing you would need to access Alexa services is an Amazon account. There will be no subscription fees or ongoing costs associated with your smart devices. Is there a monthly fee … Continue reading →

Amazon has now made Alexa available to ALL Android phones via the official Amazon Alexa app, which you can now pick up inside the Google Play Store. Previously, the Amazon Alexa app could only be used to interact with Amazon … Continue reading →

USM lenses are a series of autofocus lenses made by Canon. The letters “USM” stand for “Ultrasonic Motor,” and that refers to the autofocus technology built in the lenses. Which lens is better STM or USM? USM vs STM USM … Continue reading →

The Sony a6400 allows for a microphone input and HDMI output. But there’s no headphone port, and you cannot output 10-bit video over HDMI. The Sony a6400 shoots nicely detailed 4K video, has a full suite of capture aids and … Continue reading →

How do I turn the flash on my Sony camera? To turn on the flash so it works regardless of lighting, press the flash button on the camera (or touch-screen LCD, if equipped) until the forced flash (aka fill-flash) icon … Continue reading →

Most people have stopped using USB drives for data storage, opting instead for cloud services like Microsoft OneDrive or Google Drive. Still, these devices make a handy backup for situations like public presentations where you cannot access your cloud drive … Continue reading →

Since the HDMI voltage specification allows for the output port voltage to be between 4.8 V–5.3 V, there is the possibility that the downstream source is a higher voltage than the upstream source. Do HDMI cables carry voltage? HDMI is … Continue reading →

The Micro-HDMI is a Type D connector. This cable provides HD viewing and allows for the connection of small portable equipment and devices including GoPro action cameras, SmartPhones, small video recording devices and portable media players. What are mini HDMI … Continue reading →

HDMI is 5 volts but has . 3 volt drop in the spec, so it should work if it gets a 4.7 volt signal. Is HDMI cable low voltage? HDMI cable is considered low voltage so you can install it … Continue reading →

A refrigerator should be plugged into a 110-120 volt grounded electrical outlet on its own dedicated circuit. This will ensure the safety and effectiveness of the appliance. Avoid using an extension cord or adapter, removing the ground prong, and plugging … Continue reading →

HDMI cables run electrical signals through twisted pair wiring, and like any other sort of cable, can suffer from radio frequency interference. You can identify HDMI interference by seeing some speckles (usually green or red) on your high-definition TV. How … Continue reading →

Feel the wall where the outlet is located. If you feel that its hot or there’s more smoke pouring out of it, evacuate and call 911. Waiting for help is the safest. But if you feel that you can tackle … Continue reading →