Thank you for reaching out to the Samsung community! We really apologize as the device does not have requested features, however Galaxy S8 comes with the Selective focus. With Selective focus mode you're able to choose the depth of field after taking the shot to choose whichever focus you fancy: foreground, background, or both.
Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
