Here's a camera carryover from the Galaxy S8 phones. If you tap and pull the shutter button, you can drag a floating shutter button onto the screen. That might help you take photos without reaching your hand so far.
To translate a whole sentence instead of a word, tap the teal button in the translation box (to the left of the word "Spanish" in this picture) and highlight the sentence you want. Then hover the S Pen and your translation will pop up.