It’s down to the amount, and quality of glass required for a wider aperture – bigger lens. That makes it bigger, heavier, and more expensive. Why are some camera lenses so big? They have to be tubular because the optical … Continue reading →

“USM” signifies the lens has an UltraSonic Motor for autofocus. That means AF is faster and quieter then the less expensive lens, which uses a conventional motor. It also means that you can manually focus the lens without having to … Continue reading →

Yes, 400mm is enough for bird photography. Don’t just take our word for it either, have a quick look at the Canon 400mm lens group on Flickr to see an impressive assortment of bird photography images shot at this focal … Continue reading →

The difference between 300mm and 400mm isn’t that great, but bear in mind that the 400mm prime will almost certainly be sharper than the 70-300. As somebody said in a another thread, the angle of view of the 400mm lens … Continue reading →

Sony a6100 E-mount APS-C Mirrorless Camera Thanks to stunning image quality and speed based on technology developed for our full-frame models, you can leave the hard work to the camera. The α6100 ensures you’ll never miss an instant. Does Sony … Continue reading →

The T7 supports SD, SDHC, and SDXC memory, which is in the same compartment as the battery. The battery powers up outside the camera, in an included wall charger. Battery life is solid, with a 500-shot CIPA rating when using … Continue reading →

An aperture indication of “00” means that the cameras thinks there is no “compatible” lens attached (as when a older lens not having an EF mount is attached through an adapter). Why is my aperture 00? An aperture of 00 … Continue reading →

Leica’s series of lenses for single lens reflex cameras are designated R-series lenses, and are generally identified by the addition of the letter “R” after the lens name. The Leica R-mount is a three lug bayonet mount with a 47mm … Continue reading →

If you’d prefer to invest in some professional baby photographs, now is the ideal time to do it. Between 6 and 10 months of age, when your baby can confidently sit up but isn’t yet crawling is one of the … Continue reading →

Magnification of a lens is defined as the ratio of the height of an image to the height of an object. It is also given in terms of image distance and object distance. It is equal to the ratio of … Continue reading →

A microscope’s total magnification is a combination of the eyepieces and the objective lens. For example, a biological microscope with 10x eyepieces and a 40x objective has 400x magnification. What is the magnification of 40x? 400xA 40x objective has a … Continue reading →

‘-The object should first be focused under low power, then high power prior to using the 100x objective lens. -The intensity of light may need to be adjusted to optimize illumination. -A drop of immersion oil must be placed between … Continue reading →

Unlike the analog AUX connection, USB allows transferring clean, digital audio, and the wired connection allows higher data transfer than Bluetooth, translating to better, more detailed audio. Does USB have better audio quality? USB headsets bypass your computer’s sound card … Continue reading →

Overview. The USB-C to 3.5 mm Headphone Jack Adapter lets you connect devices that use a standard 3.5 mm audio plug — like headphones or speakers — to your USB-C devices. What does a USB-C Jack look like? The USB-C … Continue reading →

Change the way music sounds on iPhone with EQ, volume limit settings, and Sound Check. Choose an equalization (EQ) setting: Go to Settings > Music > EQ. Normalize the volume level of your audio: Go to Settings > Music, then … Continue reading →