How to solve the problem of exposure in high light ratio environment in landscape photography
- Dec 11, 2019
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When we are shooting scenery, we will inevitably encounter some environments with large light ratio. Unlike our naked eyes, the camera can adjust itself automatically. The limited tolerance of the camera does not give a good consideration to both high light and dark part. For example, if the light ratio between the sky and the ground is too large, we will find that either the dark part is dead black or the sky is dead white after shooting. At this time, we will solve the problem by some special means.
&There are many methods, such as the black card technology, the use of gradient mirror, HDR post production and so on. Each method has its advantages and disadvantages. I've tried all kinds of methods. Let's talk about my personal feelings.
Shake black card technology:
&Nbsp; & nbsp; & nbsp; advantages: natural transition of light and shade, real color restoration.
&Nbsp; & nbsp; & nbsp; disadvantage: the success rate is low, and it is easy to succeed when the exposure is long. Of course, the success rate will increase a lot after proficiency.
&Nbsp; & nbsp; & nbsp; a method used more by individuals, but usually before sunrise or after sunset. Keep a long exposure time to ensure the success rate.
As shown in the figure below, shooting parameters: manual exposure, aperture 11 & nbsp; & nbsp; exposure time 4 seconds
Use of gradient mirror:
&Nbsp; & nbsp; & nbsp; advantages: convenient, and the price of gradient mirror is very cheap, which can be used for one-time imaging.
&Disadvantages: hue is easy to change, image quality is easy to get worse, and there is also a problem of light gear in gradient mirror. For each different light ratio, gradient mirror with different light ratio gear is used.
&Personally, I'm not used to gradients, though I carry them every time I go out.
As shown in the figure below, shooting parameters: aperture 11, exposure time 1.3 seconds. The hue of the sky changed significantly. (the picture is a film I gave up, just for example)
HDR post production:
&Nbsp; & nbsp; & nbsp; advantages: it is convenient and easy to take several photos with different exposure by surrounding exposure. Through post production, it can better take into account the details of dark part.
&Disadvantage: it is not natural, especially the edge is easy to produce bright edge.
&Nbsp; & nbsp; & nbsp; I don't like to use HDR to make pictures because I prefer the natural and real feeling.
As shown in the following figure: taken in Weizhou Catholic Church, surrounded by three different exposure pictures, Canon DPP software later HDR production.
&In addition to the above methods, I'd like to share some of my personal tips below, hoping to help you, and also hope that you can give more suggestions and make progress together.
&Nbsp; & nbsp; & nbsp; personal methods are as follows:
&Nbsp; & nbsp; & nbsp; take two photos with different exposures, or take them in raw format, adjust two photos with different exposures in the later stage, and then process the photos with PS post mask tool to take into account the exposure of highlights and shadows.
&Nbsp; & nbsp; & nbsp; 1: measure the highlights and darks respectively, record the parameters at that time, fix the camera on the tripod, and compose the picture. Manual m exposure, respectively adjust two different parameters and take two different photos (one high light exposure is normal, one dark exposure is normal)
Highlight exposure photo: sky exposure is normal, dark part is too dark.
Shooting parameters: manual exposure, TV (shutter speed) 1 / 13, AV (aperture value) 11.0
Dark exposure photo: normal water exposure, sky overexposure,
Shooting parameters: manual exposure, TV (shutter speed) 1 / 4, AV (aperture value) 11.0
2. The later method is as follows:
(1) open two pictures and overlay them to get the background layer and layer 1. Add a mask to layer 1. The following picture:
(2) select the gradient tool, as shown below:
(3) use the gradient tool to pull out the gradient on the mask of layer 1, so that the transition between highlights and shadows is natural (this step should be handled carefully, you can try more until you are satisfied)
(4) merge the layers after proper adjustment, and output the photos after completion. (because in the above steps, I use small pictures to process and take screenshots. Maybe the picture quality is not ideal. The original picture I used is large and more detailed, so the picture quality is better. But the steps are the same, sorry
Here is the final picture.
&In my opinion, this method is simple in both pre shooting and post-processing, and it can ensure the normal exposure of highlights and dark areas, as well as the excellent image quality and color. Of course, it's just some of my personal skills sharing. If it's wrong, please point out.
&Photos with the same shooting method and processing method:
People with different sunrise postures:
&Nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2: when there is no tripod, take raw format, adjust two photos with different exposure in the later stage, and then synthesize them by the above later stage method. The premise is to ensure that both highlights and shadows can retain certain details.
&Nbsp; & nbsp; (1) shoot raw format original film. The highlight of this film is not overexposed, and the dark part can retain certain details.
As shown in the following figure: shooting parameters: shooting mode aperture priority auto exposure & nbsp; TV (shutter speed) 1 / 200 & nbsp; AV (aperture value) 11.0 & nbsp; metering mode evaluation metering
(2) adjust the highlight to a satisfactory effect. At this time, the dark part is completely black, but the highlight is normal.
The following picture:
(3) adjust the dark part to a satisfactory effect. At this time, the highlight position is dead white, but the dark part is normal. The following picture:
The above PS method is used to synthesize the image. (the method is the same as above, and will not be repeated here)
The following picture:
&Nbsp; & nbsp; this method is to be carried out on the premise of raw format, and to ensure that the time ratio of shooting can not be too large, and in the later appropriate remedy can get more satisfactory photos. However, no matter how to remedy it, such treatment will lose certain image quality. If the dark part is bright, there will be obvious noise. Therefore, I strongly suggest that if conditions permit, don't be afraid of trouble, try to use the first method to shoot. Of course, you can choose other methods. The best one is the one that suits you.
&Large light ratio environment is an inevitable situation in our landscape photography, but if the light ratio has exceeded a certain degree, even if you use any method to shoot and deal with it, it doesn't make any sense. This is also the reason why our landscape photographers get up early to shoot in the dark, because the light light ratio in the early morning and in the evening is relatively small, and the color is rich Rich, changeable. Here, to all the landscape photographers.
&Nbsp; & nbsp; the above are just some of my shooting experience and skills to share, welcome to point out the shortcomings, welcome to discuss. Let's make progress together.