I've got a banner that is 43,000px x 8,500px @96dpi done in Photoshop but the PDF option does not come up in the Save As. Only if I reduce it to 30,000px across will the Save As PDF option come up. Is there an inherent limitation for PDF sizes in Photoshop or PDF's in general? Any help to get around this would be great. The printer guy wants it in a PDF. Thanks.
The printer guy wants it in a PDF..
Yes, and the printer guy also probably knows this should not be a Photoshop PDF — which is limited, Photoshop was not made for this purpose.
The printer guy can probably confirm you need to drag that image into InDesign and export a for-real-to-print InDesign PDF.
Yes, you can drag (aka. link) a Photoshop file (aka. PSD) into InDesign.
Also, when printing at this size, you never, ever, think in pixels. The printer guy should give you sizing in Centimeters or Inches, depending on your location.
Pixels are for used for screens — laptops, tablets, smartphones, etc.