The problem of blur when shooting in the studio with DSLR

Use the center-weighted metering mode, use the LCD screen viewfinder shooting mode, turn off the anti-shake on the tripod, use ISO 100, use f8 as the aperture, use av mode, use a remote shutter or delayed shutter. If there is too much white in your composition, it may cause problems. Inaccurate metering leads to underexposure. At this time, you can tell whether it is insufficient by looking at the LCD screen. Once it is insufficient, +ev + until the exposure is normal, shoot in raw format and finally import it into the computer to set the white balance on a white background.

If the white color of your background is not accurate, buy a white balance card, place it in the center, and manually set the white balance on it