How to shoot the slow door effect by superposition method

Equipment: stable tripod, regular pay-off, computer with cs6 PS.

2. Shooting parameters

According to normal exposure, it is generally necessary to take more than 20 shots, and the interval between each shot is 1- 10 second. The selection is based on the flow rate of the cloud or water. Short intervals can make the trajectory of the cloud look delicate, while long intervals can make the cloud pull out the distance or space when moving, thus forming a step-by-step visual picture.

Because each scene has different cloud and water velocity, different interval time and different shooting quantity, everyone should choose the operation among the above interval values. It is suggested to try the first shot: 20 shots every 5 seconds.

About picture format: If the computer configuration is relatively high, take the RAW format, otherwise take the JPEG format.

3. Post-processing

PS synthesis method:

① Open file-script-load the file into the stack (remember to check "Create smart object after loading layer")-browse-select the picture to load;

② Layer-Smart Object-Stacking Mode-Average;

The effect diagram is as follows:

And (3) splicing the images, that is, finishing.

5. About photometry

It must be measured according to the highlights of clouds or water to ensure that the details of the two are not lost; For the underexposed part of the picture, you should take a new one after exposure. Finish the above overlay, import this exposed picture, and use the relationship between the layer and the mask to get a reasonable exposed picture.

The final effect diagram is as follows:

In addition, the advantages of the stack method are:

① It is inconvenient to omit the filter, especially the ultra-wide angle filter, which is expensive;

2 to avoid the color cast produced by the filter, I am really helpless about the color cast in the later period;

③ Avoid the noise caused by long exposure of the filter;

The most important thing is not limited by time. Especially when participating in team activities, the shooting time of a certain point is very short or uncertain, so how many pictures can be taken by this method, and when it comes back, it is also a slow picture.