One of the points in the article is the recommendation to use the highest resolution camera that you can in order to give the option to print bigger. As usual this can be a case of horses for courses. I do not print bigger than 13" x 19" (A3+) and I am happy with 26MP. Ok I might want to print bigger in the future. If so, there are options.
In the case of a landscape that is static I can take overlapping shots and stitch them. Of course, it will inevitably be the case where the photo I want to print larger is not a stitched image. The other option is to use Super-Resolution to double the pixels on each axis. This many have sharpening implications and still not give the required sharpness. On the other hand a bigger print may well be viewed from further away, so will ultra sharpness be needed?
There is also the context which I operate. I am an an amateur photographer and 99% of my images are for myself or for a magazine or for a project book. I do not do large exhibition images. 13" x 19" images in an 18" x 24" frame are big enough for me. Also, larger resolution kit will almost inevitably be bigger and heavier. Portability is a consideration for me.
This is just me, for professionals it will probably be a case of YMMV.
Jonathan
