Am I a candidate for a neck lift without a facelift? (photo)

No, not many patients are candidates for an isolated neck lift (except younger patients with good tissue elasticity/minimal excess skin). You have redundant midline skin with platsymal banding. The skin excess is hard to eliminate without including the incisions behind the ears/neckline and pulling up the lower face/jawline...this creates tension on the deeper tissues and allows us to pull out the extra skin and eliminate it.

Yes, but it also depends on how you feel about your jowls. Most of the patients I do a MyEllevate necklift on look like you, early jowls, mild to moderate platysma banding and neck laxity.
You appear relatively early in the jowl development, so I would suspect you would by satisfied with necklift alone, as the focus is certainly on the wrinkling and laxity of the neck.
MyEllevate is a non-incision suture suspension neck lift. It is usually accompanied with Precision laser skin tightening, and if there is a component of excess fat, then, in addition, liposuction is done.
The procedure is not the equivalent of a surgical face and neck lift, but can give improvement of the cervicomental angle more than can sometimes be obtained with liposuction with or without laser skin tightening alone.
Greater and lesser degrees of neck laxity will influence how much improvement is obtained.
The main criterion for a good outcome is how much skin laxity there is, and this is often associated with aging.
Patients who have less laxity to begin with look tighter and have a better neck angle and appearance, than patients who are getting jowls and have more laxity.
The procedure is done with local anesthesia in the office operating room. After surgery, there is an anterior neck dressing held in place by a Velcro head wrap.
This wrap is left on for three days. Also, a cervical collar is worn during that time, as a reminder to keep the chin up, and worn for another week whenever there may be a tendency to look down, as in reading and eating.
A feeling of tightness usually lasts about two weeks. Progressive skin tightening and smoothing of the skin occurs over the next several weeks, with skin tightening continuing for six months.

Most often a lower face/neck lift together is the best option but sometimes just a neck lift alone can make the problem area look good enough. Cost is roughly $8500 for quality work and is best done under local with a little iv sedation for complete comfort.