Canon 600D camera verification and use of dynamic range method resolution

Let's take a closer look at how the Canon 600D camera verifies and uses dynamic ranges.

Analysis and sharing:

The dynamic range indicates how much light and shade can appear in a photo. Generally, the wider the dynamic range, the better the camera performance. Use a dynamic range test piece to verify the dynamic range of the EOS 600D.

Highlight Tone Priority: Disable/automatic brightness optimization: disable 7 + 2/3

 

 

With the center brightness as the benchmark, the highlight area shows 3 + 2/3 levels, and the dark area shows 4 levels. It can be said that the dynamic range is wide enough to prevent high-light overflow and missing dark parts. In addition, there is a good balance between the highlight and the dark, and the ease of use can be compared with the superior model.

Highlight Tone Priority: Enable/automatic brightness optimization: disable 8 + 2/3 levels

 

 

After highlight tone priority is enabled, the dynamic range of the highlight area is increased by one level, and a total of 8 + 2/3 levels can be displayed. If you do not want a highlight overflow, this setting is very effective. At the same time, the image contrast will not decrease because the middle tone and the dark part are not affected.

Highlight Tone Priority: Disabled/automatic brightness optimization: enabled 7 + 2/3

 

 

Automatic brightness optimization is a function for the camera to determine the brightness and shade of the subject and perform corresponding processing. Because the dark part of the photo is automatically highlighted, you cannot use a chart to speculate on the real-time results. The effect of automatic brightness optimization on the dynamic range can be said to have not been shown in the verification of using charts.

Test method: Use a dynamic range test piece for testing.

A dynamic range test film is a 10-level film with a brightness difference, measured in 1/3 units according to the camera's exposure value. Take this test piece and use the intermediate brightness of RGB (RGB = 118) as the benchmark to measure how many levels of highlights and shadows can be reproduced.

Highlight Tone Priority and automatic brightness optimization

The highlight priority function can broaden the dynamic range of the highlight part, so that the highlight overflow can be prevented when a subject with a large brightness difference is taken. Automatic brightness optimization is the function that the camera automatically compensates for the brightness and contrast of the photo as needed.

Highlight Tone Priority and automatic brightness optimization are not available at the same time.

View the effects of automatic brightness optimization from real-time photos ① most images are displayed with moderate brightness

During chart shooting, the automatic brightness optimization function of eos d was not displayed. Therefore, we will verify the image in real time. In this scenario, most of the images have moderate brightness and both the highlights and the dark parts. In this case, what is the role of the automatic brightness optimization function that can compensate for brightness and contrast? You can view the imaging effect while changing the overall brightness of the photo through exposure compensation.

 

 

Change the exposure level by 1/3 each time. You can see the effect of the change in the exposure settings on the brightness in the bright, middle, and dark parts.

The same as when the video is disabled, the video is shot every time the exposure level is changed to 1/3. It can be seen that the exposure compensation has a certain effect on the brightness, but under the automatic brightness optimization, the dark part is moderately brightened, and the bright part is adjusted to avoid the brightness being too high, the overall contrast is also adjusted. With the automatic brightness optimization function, even if the correct exposure level is deviated to a certain extent, the photo can still be compensated to prevent failure.

View the effect of automatic brightness optimization from the real-time photos ② the overall picture is relatively dull

The automatic brightness optimization function can automatically compensate for the contrast of the image. What is the performance of the image when there is neither a highlight nor a dark part? Next, we will continue to pass the real-time photo verification.

 

 

There is neither a highlight nor a dark part in the screen, and the contrast is low, which makes people feel dull.

After automatic brightness optimization, the black color of the ship in the photo is slightly darker, and the white color of the water tank is slightly brightened. The overall effect is to increase the image contrast, and the photo looks less dull.

Simple and easy-to-use automatic brightness optimization and try to reproduce the brightness of the highlight tone is preferred

The automatic brightness optimization of the EOS 600D not only compensates for the dark part, but also adjusts the brightness balance between the bright part and the dark part. In multiple scenarios, this function can moderately compensate for the brightness and contrast. The priority of highlight tones is to extend the dynamic range of the highlight area to a higher level, so that the imaging of the highlight area is more natural and the level is more delicate and smooth. It can be seen from this that it is recommended for beginners of photography to use simple automatic brightness optimization. For users who want to faithfully reproduce the original brightness of the highlight, the highlight tone is preferred.

Flexible use of the highlight-Tone Priority function to give full play to the dynamic range of EOS 600D

When shooting scenes with high brightness differences, if you can flexibly use the highlight-Tone Priority function to suppress the highlight overflow, you can take a wide range of photos. For the specific effect, see the following real-time photo.

 

 

Photograph the atrium from the building inside the temple. High-light overflow occurs in direct sunlight such as the entrance.

 

 

When the highlight tone is set to disabled first, the highlight overflow is restrained, and the texture of the stone is fully reflected.

 

 

When you take a picture of a subject with a large gap in light and shade, it is easy to produce a high-light overflow phenomenon. Setting the high-light tone first can effectively reduce its impact on the image. Some users want to reduce the exposure to achieve this effect, but in this way, the entire photo will become dimmed, which may easily lead to missing hidden parts. However, the highlight tone gives priority to the dynamic range of the highlight part. Therefore, the brightness of the highlight part can be enhanced without affecting the overall brightness of the photo. In this photo, we can see that when the highlight tone is set to disabled first, some images almost completely lose the sense of attention, these parts have recovered lost details.

Setting method

1. Display the custom function (C. Fn) screen

 

 

Click MENU, select "C. Fn" from MENU 3, and click SET.

2. Enable the highlight-Tone Priority function

 

 

Select "Highlight Tone first" in "C. Fn II: image" and press the SET button. Select 1: Enable and click SET.

All right, the above information is the detailed Canon 600D camera verification and dynamic range resolution for photography enthusiasts, you can see that photography enthusiasts here, Xiaobian believes that you are now a very clear way to verify it, so all of you will follow the methods provided above to verify and use the dynamic scope to see the results.