Welcome to the Part 2 of Inspire 2 image quality review. The Review Part 1 (Check the article: Inspire 2 Image Quality In-Depth Review-Part I ) tested the Resolution and the Dynamic Range. In this article, let’s see the Inspire 2’s performance on Color, ISO and Jelly effect.
Demonstrating minor color differences is no longer a challenge with modern digital technology. However, with different cameras, the effect of color reproduction can be different. Camera companies have been making great efforts in color reproduction. But in my opinion, color management is more important than color reproduction. Colohttp://store.dji.com/product/inspire-2?from=buying-guidesr science, which is one of the core technologies of camera companies, is critical to a photographer’s shooting strategy. The color test is thus prone to be subjective.
We gathered a group of objects (which were not so colorful) to test X5S’s sensitivity to colors.
Image exported from SD card using Auto Mode
Toned DLOG image
Here are our thoughts after toning a few images again and again:
- Images of CinemaDNG and DLOG record large amounts of information, which provides much space for post-processing;
- The image exported from the SD card under Auto Mode has higher color saturation;
- During the toning process, the SNR of the red channel is slightly lower than other channels. If you are going to shoot a picture with a large red area, you’d better take trial photos first;
- The balancing of channels can be optimized to reach better color transitions
There is a collection of photos on Inspire 2’s ISO. The photos are from a video recorded in 5.2KCinemaDNG and then transcoded without any toning. Let’s see the examples. (Note: there was compression when uploading to the website.)
ISO100-400: Very clean
ISO800: Very few particles in certain areas (in red channel)
ISO1600: A few particles in dark areas
ISO6400: Obvious flashing, colorful noises.
ISO3200: Flashing particles in picture
Personally speaking, Inspire 2’s ISO is good enough during normal use. At ISO3200 you can still acquire an image of “OK” quality. I recommend that you avoid ISO6400 unless completely necessary.
V. Jelly effect
Apart from resolution, color and tolerance, jelly effect, especially in sport photos, is also an important factor to image quality. If the exposure speed is not fast enough when using rolling shutter, a distortion called jelly effect may occur to your photo. Vertical lines could be distorted into diagonal ones, while diagonal lines might become arcs in the picture.
Here is a photo shot by Inspire 2 with the max spinning speed of its gimbal.
When the distance between drone and object increases, jelly effect decreases. As you can tell from the picture below, the distortion of the pole was only slightly visible.
The exposure time of X5S is as short as 16ms (same as cameras of FS7). When you use Inspire 2’s S Mode (with max speed of 94km/h), the jelly effect may become more obvious. In order to tackle this problem, you need to understand the shortcomings of Inspire 2’s camera. I recommend that you crop out larger proportions of the image to reduce jelly effect. You can choose a crop factor of 2.7 X, where a 15mm lens is equivalent to 40mm lens in a 135 frame.
Inspire 2 surprised me a lot during the testing process. Despite its gap with top cameras, it excelled in this test. Here are the ratings of Inspire 2’s camera in five dimensions (with 5 stars being the highest standard in the film industry).
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