How to shoot flowers with pure black background?

Many friends want to shoot a pure black background when they shoot flowers. Here I will share my learning experience with you.

The equipment I brought today is as follows

Make full use of natural light, the greater the light ratio, the better. Choose the subject where the light can shine, and the darker the background, the better. Blur the background with a large aperture. Spot metering, metering in the brightest part of the subject. Next you will take such a photo.

Second, use a flash calender. When the camera is set to M, the flash must have high-speed flash synchronization, and it is best to use off-camera flash to capture your ideal light and shadow effect. Use evaluation photometry. Take a sample first. Then adjust the flash intensity and shutter speed appropriately. Under the condition of keeping the exposure of the subject the same, the higher the flash intensity, the faster the shutter speed and the darker the background.

Three, if there is no flash. Then artificially create a black background. Like a black umbrella. Or a piece of black cloth. Really can't. You can use dark clothes.

Of course, this is just a little experience in my personal shooting. If you have any clever tricks, I hope you can tell me.