The photographer understands a fast lens to be a lens that enables the largest possible aperture opening. You will usually find this value together with the focal length. A lens marked 2.8/150 is a telephoto lens with a focal length of 150mm and a maximum aperture of 2.8. With some zoom lenses, the light intensity decreases with increasing focal length. Such lenses, for example, have a designation such as 2.8-4/24-70. The largest aperture decreases from 2.8 in the wide-angle range to 4 in the slight telephoto range.

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Another benefit of a camera like the Insta360 X3 is the Invisible Selfie Stick. This allows you to capture all sorts of creative angles and shots - such as third-person shots or even "fake drone" shots - without actually having a drone. It's invisible as the stick falls between that overlap in footage between the two lenses, and is stitched out of the shot automatically. If you're curious, check out our guide on how to use an invisible selfie stick.

Changing the f-number can be used to design your images, for example via the depth of field. It indicates which distance range in your photo is perceived as sharp by the viewer. The smaller the f-number (i.e. the larger the aperture opening), the shallower the depth of field. at portrait shots Many photographers choose an open aperture to isolate the subject from the background. Only the face is sharp, the background is blurry and not distracting. On the other hand, if you have a subject that is staggered in the landscape, such as a tree in the foreground and a village in the background, close the aperture so that all planes are in focus. With a high aperture is then usually with the ISO sensitivity or one tripod worked, because at the same time it means lower and lower shutter speeds.

The shortest possible exposure time is not always important. Sometimes it is necessary to increase the exposure time by using a small aperture opening, for example to depict flowing water or other movements. However, you cannot make an aperture opening arbitrarily small, because the quality decreases significantly due to so-called diffraction effects. It is best to start a small test series with your own equipment and see what the lens can do with a small or large aperture.

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Insta360

So you understand how a 360 camera works, but is actually using one simple? The short answer is yes. Capturing footage with an Insta360 camera doesn't require any technical knowledge. All you have to do is press the shutter button as you would with any other camera. It then automatically shoots in all directions, giving you a 360 video ready for you to edit on your phone.Once captured, the footage can be exported as a traditional photo or video format – ready for social media for example. However, if you wish you can also use the 360 video as is, or export it as an "equirectangular" image.

Insta360 camera

There is no substitute for light intensity when it comes to flexibility in image design. Unfortunately, it also comes at a price. One f-stop more can more than double the price between two otherwise comparable lenses. For a bright super telephoto on ar full frame camera professionals have to spend a five-digit amount.

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While it sounds complicated, there's a great example of an equirectangular projection almost everyone knows. The world map. While we live on a 360 sphere - otherwise known as planet Earth - when we look at a map, the surface of that sphere is placed on a rectangle. The same is true of an equirectangular image outputted by a 360 camera. It's the whole 360 sphere being placed onto a rectangular frame.

If you've heard about 360 cameras, but you're not quite sure what they are, this article is for you. In this post, we'll break it down for you without any jargon or hard-to-understand concepts. All while using the Insta360 X3 as an example. By the end, you'll have a full understanding of what a 360 camera is, how one works, and why you might want to use one.

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In order to properly expose an image, the aperture, exposure time and ISO value must match the given lighting conditions. However, there are different combinations that all lead to the right exposure and thus give the photographer creative freedom. Shutter speed and aperture affect the amount of light that hits the sensor or film. Film sensitivity, given in ISO, determines how strongly the film reacts to light. In a digital camera, film sensitivity is simulated by amplifying the sensor's signal to a greater or lesser extent. Here, too, the specification is traditionally given as an ISO value. Doubling this value means doubling the sensitivity or halving the exposure time.

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You can make clever use of the connection between aperture and exposure time if you are concerned with particularly short or long exposure times. Take pictures of fast moving cars, trains, children, animals or sports scenes, open the aperture wide to avoid motion blur. If your camera has a Sport scene mode, it will make these settings automatically. In poor light conditions at dusk, a high-speed lens helps to photograph scenes simply by hand without a tripod.n.

If you just want to use your Insta360 X3 as a traditional camera, you can use the 4K Single-Lens mode. This is just like using a regular action camera and captures traditional rectangular footage. This is great for point-of-view shots.

An example shows the relationship between the three parameters of exposure time, f-number and sensitivity: In sunny weather, your exposure meter suggests an exposure time of 1/500 second at aperture 8 and ISO 100. You also get the same brightness of the image with 1/1000 second (half exposure time) at aperture 5.6 (next smaller f-number) and unchanged ISO 100; or with 1/1000 second and unchanged aperture 8 at ISO 200 (double sensitivity).

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In this context, it is important to look at the somewhat difficult concept of aperture row. When it comes to exposure times, it quickly becomes clear that twice as long means twice as much light and half the time only half the amount of light. Unfortunately, this is not so easy with the aperture. Here, the factor between adjacent f-numbers is approximately 1.4 (actually, it is the square root of 2, i.e. 1.414)..

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Dec 21, 2021 — The focal length of the lens determines the image magnification. The wider the lens, the shorter the focal length. This allows you to capture a ...

Overall, 360 cameras sound complex, but they're simple from a user perspective. Cameras like Insta360 X3 come with all sorts of easy-to-use features that are simply impossible with a traditional camera. And with the Insta360 app, even a beginner can edit 360-degree footage like a pro. Sound like a tool you need in your setup? Try the Insta360 X3 today.

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Reframing is handy for sharing your videos on social media, where people are used to seeing regular rectangular videos. Typically you'll find 9:16 (as on TikTok/Reels), 1:1 (as on a standard Instagram image), or 16:9 (as on YouTube) aspect ratios on social media. All these can be framed easily within the Insta360 app.

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One of the coolest things about 360 cameras is that you can reframe your footage. This means you can take your 360-degree video and create a regular rectangular video that focuses on the most important parts of the scene. In other words, you don't need to aim the camera. You can also show multiple views in one video by switching the camera direction (see below as an example). Here's a post that dives deep into this topic, but we'll keep it brief for this article.

Insta360X3

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Strictly speaking, the aperture is nothing more than a mostly mechanical device in the lens. Normally, the aperture is fully open so that the brightest possible viewfinder image is produced, for example in a single-lens reflex camera. The photographer sets how far the aperture should close at the moment the picture is taken. The set value is the aperture number, which is usually referred to as the aperture. A large f-number (e.g. 22) corresponds to a very small opening, a small f-number (e.g. 2.8) corresponds to a wide opening.

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Photo credit:„Lenses with different apertures“ fromKoeppiK – Own work. Licensed underCC BY-SA 3.0 aboutWikimedia Commons.Aperture comparison: Stefan Englert

There's even a Me Mode feature that lets you skip reframing altogether. It focuses on you the whole time, meaning you don't need to aim and you don't need to edit either. Beyond that, you can explore Shot Lab for cool effects on your footage.

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You can then use that footage to frame a traditional square or rectangle video. Imagine a sphere with a picture stretched out across it, you can pick any square on the surface of that sphere and use that for your end result. This opens up a world of editing possibilities (more on that later).

A 360 camera works by using two or more lenses to capture a 360-degree view of everything around it. It's a little like having multiple cameras in one, where the camera then stitches these images together into a 360° sphere. Using the Insta360 X3 as an example, each of its two lenses captures over 180° (half of 360°), then it stitches using leeway where the images overlap. This allows for high-quality seamless video or photos.

Now, you may be thinking that editing 360 footage sounds difficult, but it's not hard at all using the Insta360 app. From your phone you can edit footage with ease, whether it's using ViewFinder to literally aim your phone to reframe, or just swiping and placing keyframes - it's simple to edit your 360 footage.