This question is asking for an individual reader's opinion, so you can feel free to state your opinion and explain it. It is a great question, because this poem does provide readers with quite a bit of vivid, visual images. The fields of grain and setting sun are both favorites of mine, but they are not the image that sticks with me time and time again. The image of death being carried by a carriage is what strikes me over and over again. Some people interpret this to mean that Death is the carriage driver. Other readers think that Death is a passenger who might order the driver to stop and pick up the poem's speaker. This is the image that I tend to gravitate toward. I've always pictured the narrator and Death sitting by each other in the back of a horse-drawn carriage as they are being toured around town. The image has always been super vivid to me because of how much it stands out in contrast to a stereotypical carriage ride. Movies and television shows always seem to show a man and woman in a carriage together as being quite romantic. Dickinson's poem manages to do this, and that is why the image is so vivid and striking. In this case, her "lover" and/or object of the romance is Death himself. It's a very different way of looking at death.

Emily Dickinson's poem, "Because I could not stop for death," is one that explains how death can be perceived. In this poem, she personifies death, making it seem as though Death is a real person who is coming to take her for a ride  and onward to the end of her life. One of the most vivid images in the poem is the portrayal of Death as a kind, patient person. Dickinson uses the word 'kindly' to describe death. She says "he kindly stopped for me." This image of kind Death goes against many portrayals of death as either violent or mean or awful. Dickinson lets the reader know that sometimes death can be a gentle process, a kind one. As Death leads her on her journey, it takes her on a tour of her life and she finds that not only is she not afraid, she is at peace. Therefore, the image of Death as a kind, gentle force forms a vivid theme in this poem.