Dang! Want a 15mm for Canon or Nikon? The Zeiss 15mm f2.8 Distagon is $1251 off as I write this.
How does the Zeiss Loxia 25mm f/2.4 look when used for an outdoor portrait? It is an interesting question because often it makes much better photo to separate a person from the background, assuming it’s mostly about the person/people. It is widely assumed that portraiture means an 85mm or similar, a viewpoint that I do not share because often context makes the picture far more interesting as time passes.
Over the years, the photos I find most interesting are those that include people and/or show context: gear, weather, time of year, activity—this brings back memories. Sometimes I shoot a selfie just as a reference for how I was traveling, what I was wearing (conditions), time of year look of the area, etc.
Published in my review of the Zeiss Loxia 25mm f/2.4 is another aperture series:
Series includes full resolution images from f/2.4 through f/16 at up to full resolution, with commentary on the choice of aperture and its visual impact.
The following is personal opinion and should not be construed as medical advice. Recovering from a concussion (I had made major progress in healing by this day) is best done away from house and home out in the wild for the very low stress it offers, not to mention natural beauty, and letting the body adjust to natural rhythms of sunrise and sunset. It is already proven that a short walk in the forest lower stress levels. I would advocate that anyone with a concussion take the week(s) needed in a peaceful outdoor location—national forest camping is free and all over the west. That is, after the acute phase where one is assured of no brain bleeding and similar. Whatever you do, do not sit around doing nothing.
Down jacket by Western Mountaineering. I generally wear the Flash XR which is highly rain resistant and has a hood, but the QuickFlash jacket I am wearing is super light and comfy, utilizing 850+ fill power down (rare, and really 900 fill power meaning unrivalled quality). It weighs only 8 ounces (225 grams)—far less than the 393 grams of the Zeiss Loxia 25mm f/2.4!