The movements of Zapruder and Sitzman in the recorded visual records, are the only true records of the movements of Zapruder and Sitzman in those specific recorded visual records.
Nobody currently alive can with certainty ID the Fuzzy, nondescript images we are discussing on the Bell & Paschall Films.
There is Nothing "logical" as to the movements that have been attributed to a Vertigo suffering, overweight, 58 year old man. Sitzman's narrative checks all the boxes and was her 1st in-depth/detailed interview. The interview was also conducted by a very respected individual. The interview Tink Thompson did with Sitzman was Far more detailed than Anything that was ever done with Zapruder. This would include Zapruder's testimonies.
Robin is correct.That photographer is Jimmy Darnell who jumped from Camera Car 3 just after the intersection of Houston and Elm. He progressed down Elm street, eventually crossing the road and visiting the parking lot area. He can be seen there in the John Martin film, and some of his film from there appears in various documentaries, as well as Oliver Stone's JFK. I think what we are seeing in Tina's film is Darnell after he left the parking lot. We see him as he races across the pergolla's south steps toward the three women also walking east in front of the pergolla. In a few seconds after Tina's clip he will be in front of those women and begin filming their faces as they continue their walk. These women are Stella Jacob, Sharon Simmons and Jeanie Holt. Stella is the darker complected woman on his camera left. I'm not sure which women are Sharon and Jeanie. If the readers go to JFK.org (the Sixth Floor Museum) they can find this film and zoom in enough to see these women clearly. They are the women we see in Zapruder's film just east of the Stemmons's Freeway sign.
That is my Father, Jimmy Darnell. He may have had a cigarette, but I'm almost 100% certain that he didn't have notes. He kept everything, right down to the video logs from that week, and we've never seen or heard about any notes.