Hmm, well you can never have too many cameras, can you?
I have often used medium format 120 Mamiya 7, with 80mm and 150 lenses, the quality of which are superb. Being a rangefinder, the Mamiya 7 is a little more complex to use with polariser and graduated filters, but it's not too difficult with a little practice. Film stock is Fuji Velvia 50 or 100.
Now I mostly use a full frame Canon 5D Mark II digital SLR, the image quality of which is very impressive, in many circumstances on par with the 6x7cm slides. Lenses are a 24-60 zoom, prime 24mm, 35mm and 50mm. For longer work a Canon 70-200 F4L is also in my camera bag. A tilt-shift Canon 45 mm TSE lens has just been added, which allows easy stitching of images with the shift function, and tilt for enhanced depth of field.
The most important bit of my kit.... thermal underwear. Landscape photography requires lots of patience, waiting for the right light and conditions. In my experience a cold photographer is a grumpy photographer, so for most of the year these are essential.
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