If anybody knows how to find 35mm equivalent focal length then please let me know. I have tried using ex if interface and hardware camera. The 35mm equivalent would be your obtained focal length multiplied by a certain number, known as crop factor. This factor is very much different for different manufacturers and even models. To the best of my knowledge, Android does not provide an API to determine the crop factor of the device's camera. There's one trick you can try using though. Once you take a photo with the device's camera, some devices will populate FocalLengthIn35mmFilm exif tag - so you can try using this technique.

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Not all phones do this though, for example, my Huawei doesn't. Some other devices will populate two fields for Focal Length - the first being the actual focal length used, the second being the 35mm equivalent. Again, not all do. The same Huawei phone doesn't, but my iPhone 5 does. To make the long story short, there's no guaranteed way of figuring out the 35mm equivalent from the focal length you obtain on the device. We now integrate with Microsoft Teams, helping you to connect your internal knowledge base with your chat.

Learn more. How to find 35mm equivalent focal length? Ask Question. Asked 4 years, 4 months ago. Active 4 years, 4 months ago. Viewed times. I can get focal length easily but I am not able to find 35mm equivalent focal length. Noise levels are very well under control in bright light and under typical indoor conditions, and creep up only in low-light situations; and the autofocus system works swiftly and accurately in almost all circumstances. The Xiaomi Mi 9 camera is clearly very good for still imaging in most respects, but some opportunities for improvement remain.

Compared to the best in class, dynamic range is slightly limited, with less detail in the shadow areas of the frame. A tone compression effect results in very low contrast and a fairly unnatural rendering of the bright parts in high-contrast scenes.

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When viewed close-up, results from the Mi 9 show less fine detail than those from such high-end competitors as the iPhone XS Max and the Huawei Mate 20 Pro, with fine textures rendered visibly softer. Our testers also noticed a lot of luminance noise when zooming into the scene, especially when shooting in low light. While the Mi 9 is very good for still images, it really shines in video mode, achieving 99 points—the best Video score we have seen so far.

The Xiaomi is the first camera we have tested that records 4K footage by default, which to a degree explains the excellent detail rendering in bright light and when recording indoors. At the same time, it keeps noise levels low in those conditions. The system works efficiently both when holding the cameras still and when walking while recording. Exposure is good even in low light, and the camera captures pleasant colors with accurate white balance. Overall, though, the Xiaomi Mi 9 is an excellent choice for mobile photography and video recording alike. It is calculated from sub-scores in tests that examine different aspects of its performance under different lighting conditions.

The Mi 9 achieves excellent results for exposure. Target exposure is accurate in all conditions, and the results are very consistent and repeatable across a series of shots.

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In the target exposure analysis below, you can see that the Mi 9 camera is consistent across a variety of light sources and levels, down to very dim illumination. The Mi 9 images show a little less shadow detail, and bright areas have very low contrast and look unnaturally flat. The comparison shots of our test scene below were captured at a very low light level of 5 lux. As you can see, the Xiaomi Mi 9 exposure system is capable of recording a usable image in such difficult conditions. Overall color performance on the Xiaomi Mi 9 is very good, without any real problems.

White balance is accurate, resulting in neutral and pleasant color rendering across all shooting situations, including low light.

Basic Picture Comparison

Only on very few occasions did we see some slight color shading—different color casts at the center and edges of the frame—but overall, color casts and other color-related issues are very well under control. As in bright outdoor light, white balance is generally very good under typical indoor lighting. In only a few of our indoor sample shots did we notice a greenish or yellowish color cast, such as in the image below on the right. The Xiaomi Mi 9 scores well in the Autofocus category, thanks to fast, accurate, and repeatable focusing in all situations.

For our autofocus lab test, we shoot 30 consecutive exposures and defocus the device between each shot, and then wait either a short ms or long ms delay before requesting focus during our benchmark lab tests. As the graph below shows, the Mi 9 consistently delivered sharp images with hardly any delay. The only situation during our testing in which the autofocus system got into trouble and produced out-of-focus results is in the one backlit portrait scene below. Neither the foreground subject nor the background is in focus, but the autofocus system worked flawlessly in all our other test scenes.

In the outdoor comparison shots below, you can see that both the iPhone and the Mate 20 Pro capture better detail than the Mi 9, especially in the low-contrast areas of the image, which look quite mushy on the Xiaomi. Under typical indoor lighting and in low light, the differences are less pronounced, and the Xiaomi Mi 9 is closer to the competition.

In the 20 lux studio samples below, noise is more visible on the Mi 9 than on the Mate 20 Pro, but the Xiaomi image is cleaner than the iPhone XS Max image. In the noise chart below, you can see that chromatic noise stays at a very low level across all light levels, but luminance noise becomes slightly more intrusive as the light gets dimmer. In outdoor images, noise is very well under control and there is very little luminance noise visible in areas of plain color, such as in the blue sky in the samples below. The situation is similar for the 5 lux low-light shots below.

Most common artifacts, such as ringing , chromatic aberrations, and ghosting are very well under control on the Xiaomi Mi 9. The effect is very visible in the bright backgrounds in the images below. We also observed a kind of dark halo along some high-contrast edges. In the Mi 9 sample below, the wall to the right of the window is very dark before it increases to a brighter tone. In the iPhone XS Max image on the right, which is much closer to the real scene, the tones of the wall are much more consistent. On the plus side, the Mi 9 controls flare much better than the iPhone in this particular scene.

The Xiaomi Mi 9 achieves the best Flash score of all devices we have tested so far, thanks to good exposure with very little vignetting , excellent repeatability , well-controlled noise levels, and fairly accurate white balance when shooting both with flash only or when using the flash with 5 lux of ambient tungsten illumination.

The Xiaomi Mi 9 comes with a 2x optical zoom lens and uses a multi-frame super-resolution algorithm to optimize image quality for transitions between the 1x and 2x zoom settings. The result is one of the best scores for Zoom in our test database, albeit not quite on same the level as the class-leading Huawei Mate 20 Pro. Overall, the Xiaomi zoom performs very well in all conditions, but images are noisier than on the Huawei and artifacts are sometimes visible. In outdoor conditions, detail rendering is good even at medium- and long-range zoom settings, but some luminance noise is visible.

The Huawei Mate 20 Pro is capable of capturing a much cleaner image in dim conditions, though. The Xiaomi Mi 9 triple-camera also works very well in Bokeh mode, achieving the second-best score to date. Results are very repeatable and the simulated bokeh has a good shape, along with very smooth blur transitions into the background, although on occasion the blur gradient in the foreground can change a little abruptly. Foreground subject isolation from the background is generally very good, but some motion blur is visible on moving subjects in the scene.

Spotlights in the background are rendered with good contrast, but the shape is not circular, resulting in a slightly unnatural effect. At 99 points, the Xiaomi Mi 9 achieves the best score for Video we have seen so far, making it the current go-to device for mobile videographers.

The overall video score is derived from a number of sub-scores in the same way as the Photo score: Exposure 85 , Color 91 , Autofocus 94 , Texture 70 , Noise 78 , Artifacts 80 , and Stabilization This gives the device a distinct advantage in the texture and detail department. As you can see in the graph below, in video mode the camera captures very good texture in bright light.

Detail levels reduce with light levels, but the camera still captures good textures under interior lighting, and edge detail is consistently good down to low light. Overall, the Mi 9 is the best phone for video texture we have tested so far. The camera not only manages to capture excellent video detail, it is also capable of keeping noise low across most illumination levels.

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Noise becomes more visible in low light, however, especially on moving subjects in the scene. Given that video footage in 4K resolution requires a lot more processing power for efficient stabilization than Full-HD video, the Xiaomi also performs impressively well for stabilization, achieving a score of 92 points. Stabilization is slightly more efficient in bright outdoor light than under typical indoor lighting conditions, but works equally well when holding the camera still or when walking while recording.

The Mi 9 is also our top device for video color, thanks to generally pleasant color rendering in all situations and no color shading. White balance transitions under changing light sources are fine as well, with only some slight stepping under indoor lighting. Target exposure is very good, even in low light, and transitions are smooth. Dynamic range is somewhat limited, but the Mi 9 has that in common with most of its direct competitors and overall, only the Apple iPhone XS Max with its HDR video algorithm achieves better dynamic range in video mode.