I have all these cameras Sony and Nikon. The rx is a great action cam with a very good lens. It’s AF and stacked sensor performance will trump any oly em1 cam like em1 m2/3 as I have one of them. Only the om1 is on par. I often take the rx over the em1 when out and about with my dog. The pcams are long zoom good light stills cams. You can crop in with the rx to 16mp maybe a little more as pcam diffraction is starting to set in around f3.9 or so. So the pcams has as advantage above about say 1000mm equiv fl for still subjects. Having a rx plus a pcam makes a very good bridge cam set that will cover most any shooting situation.
DA
I like that 1100mm and above for Pcams.....because that is where its focal ratio focal length sweet spot is (the highest focal length where the focal ratio is f/5.6). I also think it would make for an interesting head to head comparison, Pcam at 1200mm and Olympus camera with the 75-300mm lens and x2 digital teleconverter (1200mm EFL.)
I would rather use Olympus over 1" sensor cameras though because I really dislike the 3:2 aspect ratio. However if the Sony is that good I can be convinced and just select 4:3 as my image aspect ratio. I already shoot the Pcams in 4 MP since that is their sweet spot lol.
I compiled a little list of focal lengths and focal ratios to compare, please give me your thoughts on them for resolution and image detail (and maybe you can do the comparisons too?)
Oly plus 75-300mm lens
200mm f/6.1 400mm 32.8mm
215mm f/6.2 430mm 34.7mm
221mm f/6.3 442mm 35.1mm
228mm f/6.3 456mm 36.2mm
246mm f/6.4 492mm 38.4mm
252mm f/6.5 504mm 38.8mm
252mm f/8 504mm 31.5mm
258mm f/6.5 516mm 39.7mm
300mm f/6.7 600mm 44.8mm
300mm f/8 600mm 37.5mm
300mm f/9 600mm 33.3mm
The above are the largest focal lengths that can use the corresponding focal ratio.
For the Nikon P900/P950 they are:
178mm f/5.6 1000mm 31.8mm
196mm f/5.6 1100mm 35.1mm
214mm f/6.3 1200mm 34.0mm
232mm f/6.3 1300mm 36.85mm
250mm f/6.3 1400mm 39.7mm
268mm f/6.3 1500mm 42.5mm
286mm f/6.3 1600mm 45.35mm
321mm f/6.3 1800mm 51.0mm
357mm f/6.5 2000mm 54.9mm
So theoretically at least, up to 1000mm EFL on the Nikon P900/950, the Oly 75-300mm lens should do better for lens resolution. At 1100mm the Nikons should start to edge ahead, at least compared to the Oly at 200mm f/6.1. The reason I used this focal length specifically on the 75-300mm lens is because it is listed as being a sweet spot in reviews for when the 75-300mm lens performs really well wide open, which is 200mm f/6.1 (2000 lph). Above that various reviews say it still performs well to 220mm and 250mm (1800 lph), but don't say if it is wide open (it could be it does well at f/8, where it is regularly tested.) But all reviews say it is not at its best at 300mm (1500 lph), and it needs to be stopped down to f/8 there. In my own testing, I found it does best at 300mm when stopped down to f/9, so I included those in the above tables too. So we know that this lens does well at least to 200mm f/6.1, in which case the Nikon P900/950 would not begin to edge it out for detail until at least 1100mm. If the tests for it at 220mm and 250mm are correct and it does well there at f/8 (dont know about wide open)...then it is possible the P900/P950 don't edge it out for resolution until 1400mm (1300mm if it is only good wide open to 220mm.) And if you go by the full focal length and wide open, then it is only by 1600mm that it is edged out (though obviously the 75-300mm lens is not at its best at 300mm and wide open.) Going by the reviews of that lens at 300mm f/8 being acceptably sharp, the P900/950 lens wouldn't exceed it in resolution until 1400mm.
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In the councils of government, we must guard against the acquisition of unwarranted influence, whether sought or unsought, by the military industrial complex. The potential for the disastrous rise of misplaced power exists and will persist. We must never let the weight of this combination endanger our liberties or democratic processes. We should take nothing for granted. Only an alert and knowledgeable citizenry can compel the proper meshing of the huge industrial and military machinery of defense with our peaceful methods and goals, so that security and liberty may prosper together.
-Dwight D. Eisenhower, 1961