Re: Brief Comments on the 200-600 with A7R4 (Harlequin Duck)
arbitrage wrote:
And yet the RIV can focus the 600GM even with TCs without issue. It has absolutely nothing to do with the resolution of the sensor. If I can handhold my 600GM with 2xTC at 1/100s and get consistently sharp shots time and time again yet have trouble getting consistently sharp shots handholding the much lighter 200-600/1.4TC at only 840mm and with more DOF (f/9 wide open) covering focus shifts then there is no way the body is the only problem.
I'll not argue, but think of it this way. Your 600mm lens retails at US $15k, it is built by hand. The 200-600 is roughly 10% of that. The teleconverters are designed for specifically for the 'Ultra' lenses, the 600 f/4 and 400 f/2.8 premium lenses. The fact they work with cheap zooms is almost a convenience to 'poor' users. Much of the RD time designing these cameras is devoted to make sure that those lenses, the 'flagship' products work perfectly on the bodies. Far less development time is devoted to the cheap consumer lenses. What we are seeing here is products that have not fully been developed in the hope that consumers do not notice, because it saves money for Sony.....Is it an accident that there are less issues with the G Master badged lenses like the 100-400 than there are with the 200-600 which does not have the badge? Of course not, they are the second tier of 'flagship' products. The 200-600 is just an 'ordinary' lens.
Until recently I had a Sony movie camera, a CineAlta series, in other words, premium. Its specs told me that it performed a wide range of functions. Anyone would assume that it could combine those functions to make a nice movie clip. But it didn't. There was not sufficient processing power. I was told so by the product designer.
This is the key difference between Sony and others like Nikon / Canon / Panasonic - those companies make products that work and meet the published specifications. Sony push boundaries, but also cut corners in pursuit of profit
May 15, 2020 at 01:54 AM
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