How a web browser works

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DNS resolution
tcp connection
hand shaking



understand with the help of chrome dev tools request pipeline

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Understanding focal length and aperture | Become a photographer with Shubham Part-9

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1. What if focal length Focal length is the distance from the center of the lens to the imaging point 2. Focal length and aperture relation: The aperture is a fraction that describes the ratio of aperture (entrance pupil) diameter to focal length. 3. How to differentiate between lenses: Camera name itself says, like: Nikon 18-55mm f/3.5-5.6 AF-P. Maximum aperture is f/3.5 but it shifts gradually from f/3.5 at the wide end to just f/5.6 at the longer focal lengths. It can be identified by column as well, like:Nikon 50mm 1:1.4G(Max aperture f/1.4). Nows lets get into the details: 1. What is focal length: Focal length is the distance from the center of the lens to the imaging point (focal plane) where the light for the image is collected. When a lens is described as a "50mm lens," it is referring to its focal length. Different focal lengths create different levels of magnification and change the viewing angle of the resulting photograph. As the focal length value decreases, the ...
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Timing tab of chrome dev tools

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Timing breakdown phases explained Here's more information about each of the phases you may see in the Timing tab: Queueing (no-color, transparent, white ) . The browser queues requests when: The request was postponed by the rendering engine because it's considered lower priority than critical resources (such as scripts/styles). This often happens with images. The request was put on hold to wait for an unavailable TCP socket that's about to free up. The request was put on hold because the browser only allows  six TCP connections  per origin on HTTP 1. Time spent making disk cache entries (typically very quick.) Stalled/Blocking (grey) . Time the request spent waiting before it could be sent. It can be waiting for any of the reasons described for Queueing. Additionally, this time is inclusive of any time spent in proxy negotiation. Proxy Negotiation (grey): Time spent negotiating with a  proxy server  connection. DNS Lookup (Dark green) . Time spent p...
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HDR photography and What is Auto bracketing | Become a photographer with Shubham Part-4

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What is HDR photography High Dynamic Range imaging How HDR work Instead of just taking one photo, HDR uses three photos, taken at different exposures. And combine all them together into a single photo. Over exposed Normal Under exposed When you should use HDR Landscapes : Big landscape photos usually have a lot of contrast between the sky and land, which is difficult for your camera to deal with in just one photo. With HDR, you can capture the sky’s detail without making the land look too dark, and vice versa. Portraits in sunlight : We all know that lighting is one of the most important aspects of a good photo, but too much lighting on someone’s face—like harsh sunlight—can cause dark shadows, bright glare, and other unflattering characteristics. HDR can even that all out and make your subject look better. Low-light and backlit scenes (see above): If your photo is looking a little too dark—which often happens if your scene has too much backlight—H...
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