Hi Elliott,
You have a 21 mp Sony RX100 Iii and still use the Stylus1 ?
Both these cameras can take great photographs. So does Bob's XZ-2.
To clarify, I shoot Jpeg, OOC, no or minimal PP, 'good enough' rather be in the pub. I like sharpness, detail, use manual focus with both cameras to get specific focus, AF on both cameras give that most of the time anyway.
I don't look hard at corners, for very subtle differences. If something is nasty, it's me, not the camera.
RAW shooters may get more substantial differences from these cameras than me. I post shots from both cameras on both forums, it's the subject, composition, lighting, (not the IQ) that matters. Once IQ is good enough, go forth. Mostly, you (and I) need to hover over exif to see which camera was used.
They are a wonderful complimentary pair, the Stylus 1 is actually more versatile, covering the same range as rx100 and moving way beyond, and staying bright all the way. Jacket pocket size, (I prefer1/1.7" sensor to 1/2.3") lots of zoom, the biggest camera I will use. I have my larger therefore dusty R1 (aps-c-)
TCON is more like a 3rd camera, for planned wildlife shooting, more zoom than I ever owned, finding out how I will use it now that winter is over. I like shooting architectural details of the old homes in my town, it will be fun trying it for that.
now I have 24mm start with rx100m3, so I will not be adding the WCON lens to the Stylus 1.
rx100m3 goes out the door with me always. bright lens, 1" sensor, more pixels to crop, and of course, pants pocketable, and, a lot of what I shoot is in it's range.
when I had only rx100m1, due to lack of evf, I took both cameras frequently, less so now that m3 has evf.
It's not just the larger sensor, or the number of pixels. rx100 m1,2, and m3 are brighter than Stylus 1 when wide, f1.8. (XZ-1 and 2 are also wonderfully bright) You get lower ISO in the same situations than Stylus 1, and you get low light no flash shots impossible with Stylus 1. While less zoom, rx100 or xz-2 can shoot wide in the semi-dark, then crop the heck out of it for 'post zoom', again, getting shots impossible with Stylus 1. for heavy crops, rx100's larger sensor and 20mp's are an advantage over XZ-2.
Lower ISO is always preferred by me, so even if matching ISO's compare favorably, if a camera's brighter lens gives you lower ISO, there you have it. Stylus loses to very bright lenses in the near range, but stays wonderfully bright f2.8 all the way out. my m1 is down to f4.9 at 100mm, m3 stays at f2.8 when fully zoomed, but stops at 70mm.
Stylus 1 when Zoom will be needed, Ben's soccer season has started, I bop about NYC, starting to go to Parks more, shoot birds in the wild, etc. Donna just retired, so I will get up off my ___ more now.
do you see a large difference in IQ between those from iso100 to 800 ?
No large differences, mostly, in good light, quite comparable. I have not done IQ tests, I have done a color shootout, Stylus 1 came out very well, I like both Oly and Sony Jpeg colors. Actually, Oly may do purples more accurately than the Sony, we will have an IRIS/Hydrangea shootout later this season. (If the Hydrangeas survive the deer chomping and stomping)
1. set the Stylus 1 to it's best advantages (not default settings)
2. at normal viewing sizes: 8x10 prints, computer monitor (my 23" monitor, full screen image is only 11" high) it is difficult to see IQ differences.
3. 800 ISO is the limit for comparison as you suggest, not always equal, but can be
I mostly shoot S mode, occasionally M mode, now m3 has auto ISO in M, so I will be using M more, meaning:
I get resultant ISO, whatever the camera chooses. Rarely do I look to see what the ISO is/was, the images come out nicely from both cameras, or, they don't.
Oh yeah, to clarify, I am shaky and shoot handheld, making a fast lens more important for me, and good IS. both stylus 1 and m3 have excellent IS, m1 IS sucks!!!!