tn1krr

I've shot/owned (still have the GM 100-400) the above lenses and while A mount 70-400SSM2 is quite ok for daytime use (tracking is just fine for airshows etc.) in terms of AF the GM is way better: ...

Take a look at this this lens layout pic of the 135/1.8 and you'll see that even the physical design is nowhere near compatible with a TC that goes about 15 mm or so (I've got the Sony 1.4x TC and ...

Indeed. The Sony is the only option & there are zero rumors about potential alternatives. Good news is that the Sony 1.4x TC is very very good, specially with the GM 100-400. I have this combo and ...

I do not think so. I'm a long time Sony A7-series user and it has always been the case that when adapting lenses the teles are worst; instead of thinking about "AF improvements" I think it is the...

Actually native mirrorless long teles are very different in design from their DSLR counterparts. Sony GMs (100-400, 70-200, 400) have multiple focus groups and multiple focus motors (even of...

Obviously it will and no setting will "fix" this. Why? Sensor readout speed is so slow in Canon. It takes about 80 msecs to fully do a full sensor readout and while this (and during reset & ...

I agree, the 24-70/4 is the only lens I have ever returned. I preordered it before the release and immediately saw the weaknesses in it that later tests/reviews confirmed. It is nicely sized, but ...

Heat and the fact that there are speed speed differences in the different readout/ADC modes. Just like the A7R3/A7III have readout speed of 1/15 secs in 14 bit mode and 1/30 in the 12 bit mode. ...

Some good and some a bit questionable has already been given in this thread Not very helpful - Live View Setting mentioned does not help much, the lens aperture will only remain opened up until it ...

Cheapest place to one or both is probably your local rescue animal center :-D

This is due to slow sensor readout in the EOS R. It take about 1/12 secs (around 75-80 ms) for sensor to read in full resolution (no line skipping or crop like in video) in full bit depth. During ...

The difference is not really that big, nothing comparable for example to the size diff between PDAF pixels in the mirror-setup and sensor-based AF. For example the AF difference between Sony A7III ...

10,67 M. 1.5x crop factor applies to both vertical and horizontal direction. 24M / (1.5 * 1.5) = 10,67M. Better APS-C croppability is one of the benefits of the megapixel monsters like Z7, D850 &  ...

Except the A7III does not have the AF system from the A9 at all. They share same PDAF pixel grid, but A7III does not have the very thing that makes A9 very very special in terms of ...

Canon AF-C + Eye AF is gonna be in par with gen2 A7-series, at best and propably worse than that. The slow readout sensor hampers Canon in this too as they cannot get equally fast (fps) high res ...

While A7III may enjoy small edge over A7RIII in terms of AF people tend to forget a few things when making these comparisions - A7RIII has significantly better EVF (higher resolution/contrast etc.) ...

Hoodman is great, have used one in my A7R2/R3 since they came out. Way better stray light protection and much more comfortable when one is using head/eye as stabilizing point when pushing long ...

I think it is mostly combination of low accuracy/sensitivity of on-sensor PDAF points (being way smaller than those in dedicated mirror-PDAF, no cross points etc.), readout speed of the sensor and ...

https://twitter.com/subtraho/status/1043179118643306496 https://twitter.com/philtastic/status/1043440093925724160 Sounds like pretty same thing that Sony has, teles have always been the most ...

Long teles adapt pretty bad to Sony, with the only exception being the A9 with its 5x faster sensor readout speed (faster readout gives way better sample rate for sensor-PDAF ==> this means way ...