Two ten-year-old bridge cameras, head to head. It's clear when they are looked at closely that the Canon is the more solid, better made and no doubt more expensive camera. The latest version, the SX70HS, is still available. The Pentax is more plastic, but does score very highly on the speed of start up and the menu system and general ergonomics, which trump the Canon on virtually every level. However, familiarity will even that out to some degree.
They are a similar size, the Canon being slightly larger and definitely heavier.
In terms of performance, AF speed is similar, but the Pentax fails miserably in the low red light of sunsets. In terms of quality of results, at wider settings the Pentax is crisper and sharper, at long telephoto settings the Canon has the edge.
Canon
Pentax
Canon
Pentax
Canon
Pentax
Canon ISO 100
Pentax ISO 100
Canon ISO 400
Pentax ISO 400
Canon ISO 1600
Pentax ISO 1600
Canon ISO 3200
Pentax ISO 3200
Pentax ISO 6400
Both cameras do well on ISO, but the Pentax is better and has a wider range. Having said that, ISO 6400 is a bit mushy and probably best avoided. In general, the Canon is the one of choice at this point in time, especially as the Pentax had a sensor fault and a number of hot pixels in an obtrusive line. So that has to go back. But it held its head up well, and the lens was sharper than the Canon lens. My verdict is that there's a real place for bridge cameras as an excellent all-in-one solution, especially for travel, and newer models are no doubt much better. Wildlife is tricky because of slow response times and poor viewfinders, but not impossible with practice. It's been an interesting exercise.