Here is the follow-up on the earlier Ming Thein article. Maybe this is what Aristophanes was begging for with his "legit discussion". Bolded text is my emphasis. I recommend reading the whole article, there are many things to consider.As far as I can see the whole notion of mFT having a "too limited shooting envelope" is very much artificial. I have not been in a situation where mFT hasn't given me a shot that I would have got with a larger format. This is also echoed by most other mFT shooters I talk with, and that includes working professionals.
Among working professionals who have switched from a full frame Canon or Nikon rig the general consensus seems to be that mFT offers them 99 % of the image quality at a significantly lower price, while being much more portable. They usually say that they may get technically better image quality, but you have to look at 100 % crop in LR and compare side by side to see it. Which is what the YouTube photography talking heads like Jared Polin and the Northrups always seems to turn to every time they feel that they feel that they need to justify the additional weight, bulk and cost of full frame. Then there is the cost, the days where photographers were employed by an agency that just issued them with gear they needed for the job are long gone. They are now self employed and have to pay for their own gear, and they still have to lug it around. With this in mind, the E-M1X and Olympus Pro lenses makes a lot of sense being 1/2 the price of a Nikon D(x) or Canon 1D with the respective top tier lenses. When you take all of this into consideration, it's very quickly apparent that by going full frame you are just chasing diminishing returns. The (relatively small) improvement in image quality is plainly not worth the extra cost, bulk and weight.
I also think it's good for Olympus/mFT that "everyone" is moving into full frame and spend all of their resources fighting it out with each other there. It also helps that they have an excellently mature system with several lens choices for most focal lengts, and a set of very competent camera bodies.
Unless your shooting style is dependent on shallow DoF with wide angle lenses, then you need full frame, for everything else, mFT will do. Well, that is my opinion anyways.
"So which one has the biggest practical shooting envelope? They’re all the same; read on to find out why***."
"***First image: H6D-100c and 100/2.2; X1D and 90/3.2; GX85 and 12-32/3.5-5.6. What the H6D-100c gains over the X1D in lens speed and sensor size, it loses in weight and practicality; what the GX85 gains in weight, dual lens and sensor stabilisation over the MF gear, it loses in sensor and lens performance. We haven’t even considered subject tracking and AF. But the MF guys will have more print potential in a given light condition. I have uses for all three, depending on my creative and output objectives. Don’t underestimate opportunistic photography and carrying something just in case, either – I’ve made a lot of images I like with my phone, simply because I had it and nothing else. Composition does not and should not change with hardware."
"Here’s my take on all of this: there is no free lunch, from an engineering standpoint or a commercial one. Different formats have different creative strengths, and this is generally how I choose on a given day (all other factors being equal and non-liming): the small formats are great for punchy, contrasty, all-in-focus compressed scenes and portability; the larger ones for printing, subtlety and nuance. Low light sits somewhere in the middle, with either M4/3 or FF as the best all-round compromise. Factor in size, and you start to prefer M4/3. Having used all of these formats extensively, and with output requirements perhaps a bit more demanding than most – I tend to steer towards FF or MF, with (fortunately) a unicorn as the ‘compact’. It’s definitely easier to shoot at the edge of the envelope with a smaller format, but if you can make it work, larger formats can deliver something special. We all want that magic single camera solution, and there’s nothing wrong with chasing it – but remember to keep the creative objective first, or else you’ll never be in that contented place where the hardware becomes a transparent tool and you can just shoot. MT "