During the May Day period, at the rose flower show in Daming Lake Park in the provincial capital, the nickname put a red color filter (i.e. red glass) in front of the camera lens to show a green-leafe

During the May Day period, at the rose flower show in Daming Lake Park in the provincial capital, the nickname put a red color filter (i.e. red glass) in front of the camera lens to show a green-leafed yellow flower.

D, red leaves and red flowers, or B, black leaves and red flowers. It depends on how your brain understands it.

Actually, this question was not a good one.

Because there is no limit to the camera or photoreceptor that can be used.

If you use a current digital camera or film camera to take color photos.

What you get will definitely be a deep and shallow red.

Most of the light reflected by the green leaves is cut off by the red filter, so it appears a deep red that is close to black;

The yellow flowers are bright and should appear light red in the photo;

Even if there is a red flower, it should be light red in the photo because there is a red color mask throughout the photo.

This question should have been raised under the premise of black and white photography.

Under normal circumstances, the R25# red filter should be a color filter used in black and white photography.

Can be used to improve the contrast of photos.

In black and white photos,

red flowers appear white;

green leaves appear black;

yellow flowers should be close to white light gray.