This was shot with a pretty dust-filled 105 f/2.5 AiS lens I bought brand new in 1983. This lens has a pretty good amount of internal dust and gunk in it,and it has been used and carried extensively. I used the SB-28DX flash in full Manual exposure mode and set to 85mm zoom setting, firing a flash burst to illuminate the shaded background of Photinia and a large clay flower pot. With the flash held very high on a SC-17 cord,I managed to keep "almost" all flash illumination off of the foreground. Virtually all of the flash burst hit the background.Without flash fill on the background, the shaded area would go very dark. Here, with background flash fill,the overall scene is rendered about like it appeared to the naked eye.