How to choose a camera image for a meshinstance texture?

:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By tem12qaz

I used
a shader that takes a texture with a viewport as an albedo parameter. But the picture comes out in the wrong colors.
How can I get the correct colors?
Using pow brings the colors closer to the correct ones, but the difference is still clearly visible.

shader_type spatial;
render_mode unshaded;
uniform sampler2D texture_albedo;

void vertex() {
}

void fragment() {
 vec2 base_uv = SCREEN_UV;
 vec4 albedo_tex = texture(texture_albedo,base_uv);
 ALBEDO = (albedo_tex.rgb);
 }

enter image description here