I'm trying to take pictures of flowers against a canvas cloth. But I'm not able to capture the background color accurately - it appears beige with yellow tinge - not the creamy white color. Also, it does not show the texture of the canvas cloth.
This is how I'm currently taking these pics -
* set custom white balance using grey card - took a shot of the grey card near the subject (flowers)
* distance between canvas cloth and subject is about 2 to 3 feet
* no extra light on the canvas cloth - just indirect light
* near a window - so, the pic is shot in natural light
I'd appreciate any tips on how I can take a picture with the true background color.