Steve Spencer
Online
• • • • • • •
Upload & Sell: On
|
 p.5 #7 · A7RVI MAX SHUTTER SPEED 1/8000 | |
nhmorgan wrote:
ISO 64 for all but 3 of them. Camera was set to highlight metering with +.3 EV. Most of the higher speed shots were with the 28mm 1.4 @1.4 shot low and some of that is the camera protecting the sky, but not always. Sometimes it's just sweaty runners in bright spots and the camera is protecting spectral highlights that I definitely want it to retain to be able to keep textures. None of the shots are crazy underexposed. But that ISO 64 is giving me 2/3rds of a stop over the A7RVI's ISO 100. For the Z8, at ISO 64, I really need to be looking at any shots at or over 1/6400th as being potentially overexposed on the A7RVI. In that case, we're talking 75 of those 230 shots needing an ND. And just to reiterate, that's sun at 6:30ish PM, not noon.
I bought the A7RVI knowing this. It's just an odd choice by Sony. Anything shot at 1.2 at 1/8000 is usually likely recoverable (although my experience so far is that the A7RVI doesn't have as much highlight recovery as some other cameras), but giving users one more stop to 1/16000 would have made a ton of sense if the sensor can do it. Why not? There will be times 1.2 lenses need an ND with this camera or will have to stop down. I own the aforementioned Voightlander f1, but admit that's a fringe case. A 50mm 1.2 GM in daylight isn't. I'm not bashing Sony at all. Maybe there is some technical reason the camera still can't beat the A7RV's shutter speeds in ES, but on paper, it definitely seems like a deliberate choice rather than a technical limitation.
The A9iii had a similar situation at its release, but that seemed to be more of a real technical limitation. The base ISO was 250, but 1.2 lenses capped out at 1/16,000th. I've not used one since then, but I think Sony actually addressed that with firmware and got the max shutter speed up for fast lenses. I very much doubt we will get an A7RVI update to increase the max ES to 1/16,000 so threads like this are good to inform potential buyers. Similarly, the rolling shutter is VERY real for this camera, and will show up in panning and side tracking shots. ...Show more →
Nick, thanks for this helpful post. I don't know if the 1/8000 is a technical limit or not. It is clear that for you, in shoots like the one you described a faster electronic shutter would be useful. I don't know if the high resolution sensor that is capable of DGO processing (that part is relatively new) has some limits. It is odd that the A7 5 can shoot 1/16,000 in electronic mode and this camera can only shoot 1/8,000. Since this camera is essentially double the resolution, that is processing the same number of pixels over the same length of time, but the lower level camera still has a better capability than the higher level camera. My guess is that it is a technical limitation, but that is only a guess and I make that guess for two reasons. First, Sony typically has not held back features of cameras to create market segmentation. Second, if they held back a feature they could have implemented, then I would have expected them to do so for the A7 5 as well. That said, I really am only guessing.
From a bigger picture perspective this camera does a lot and does a lot in electronic shutter mode. You will face limits at the edge of performance. The max shutter speed is lower than other cameras in Sony's line. The sensor scan speed is lower than for the A1 series and the A9 series, which means you can get some movement distortion. Nevertheless it can still handle bright light well and can handle fast action well. The electronic shutter works for these things quite often and when it doesn't you can work around that by using ND filters or stopping down when the light is too bright, and using the mechanical shutter when the action is too fast.
|
