precognito
Forum Enthusiast
Due to the slim depth of field close up, I doubt that the babies would demand f:1.4. In terms of focal length, which has worked best with your zoom? Should help in deciding between an 18 or 23. The choice should really be determined by comfortable working distance, camera angle and light source direction. My recommendation to use your zoom to sort out the optimal focal length seems before making a prime purchase may make sense.