bwcolor wrote:
The A7Rvi is -6ev and some report the subject identification in complicated environments might be superior to the A1ii. Of course the A1ii is capable of 120 AF samples per second vs the A7Rvi 60 samples. I’m not sure about how this relates to the A9iii, other than the EV number.
You should go read the specifications carefully. The A7RVI’s -6 ev spec cannot be compared directly to any of the other Sony cameras.
The A7RVI’s -6 ev is measured at f/1.2: Probably equivalent to -4.5ev at f/2
The A1ii’s -4 ev is measured at f/2
The A9iii’s -5 ev is measured at f/2
The A7R VI updates AF at 60 times a second, while the A1 II and A9 III update at 120 times a second.
Assuming they use the same AI co-processor, the A7RVI has twice the time budget per AF cycle, so it can run a more computationally expensive detection algorithm that takes twice as long to run.
Would be nice to have an option to run the more expensive algorithm when the subject isn’t moving on A1ii / A9iii
riihijan wrote:
Does anyone know if the same tripod foot fits this as the 200–600mm?
I need a better grip because of my large hands.
Do you have any recommendations?
I learned from Google that the 200-600 tripod foot does NOT fit the new 600. You need to replace it with foot fitting 300GM, 70-200GM.
I ordered the iShoot IS-THS18110II which is slightly longer than the Sony one.
It is not the same as the 200-600.
It is the same as the old 100-400, 300GM, 70-200/2.8 etc.
I use the Kirk and Leofoto feet for those lenses. They are basically the same design.
riihijan wrote:
Does anyone know if the same tripod foot fits this as the 200–600mm?
I need a better grip because of my large hands.
Do you have any recommendations?
I like to his one because it is lower profile and has a screw in lock rather than a quick release button. This plate incorporates a QD socket:
“Integrated QD Carrying Security: This foot incorporates a built-in QD socket, providing the safest carrying method available for your gear. The QD system—trusted for decades by NASA, law enforcement, and military agencies—uses a secure push-button mechanism that specifically inhibits accidental removal. This is the ideal solution for photographers who carry their camera and lens via professional shoulder slings like the Black Rapid system, ensuring your equipment stays secure even in active environments.”
I used Hejnar plates with for my Canon 100-500mm, 600mm f/4 L lenses and my R5 II for years and they are as good as they say. At $50 it’s a good deal too.
arbitrage wrote:
It is not the same as the 200-600.
It is the same as the old 100-400, 300GM, 70-200/2.8 etc.
I use the Kirk and Leofoto feet for those lenses. They are basically the same design.
I like to his one because it is lower profile and has a screw in lock rather than a quick release button. This plate incorporates a QD socket:
“Integrated QD Carrying Security: This foot incorporates a built-in QD socket, providing the safest carrying method available for your gear. The QD system—trusted for decades by NASA, law enforcement, and military agencies—uses a secure push-button mechanism that specifically inhibits accidental removal. This is the ideal solution for photographers who carry their camera and lens via professional shoulder slings like the Black Rapid system, ensuring your equipment stays secure even in active environments.”
I used Hejnar plates with for my Canon 100-500mm, 600mm f/4 L lenses and my R5 II for years and they are as good as they say. At $50 it’s a good deal too.
I like the low profile and security of the screw for that foot. But for my use it is too short. The main reason I upgrade my feet is to gain a longer foot. I've also owned many Henjar feet over the years and they are great products. I know in the past he has been willing to make a custom design so I wonder if he would make that foot with double the length if requested.
arbitrage wrote:
I like the low profile and security of the screw for that foot. But for my use it is too short. The main reason I upgrade my feet is to gain a longer foot. I've also owned many Henjar feet over the years and they are great products. I know in the past he has been willing to make a custom design so I wonder if he would make that foot with double the length if requested.
p.2 #10 · Sony FE 600mm f/6.3 GM OSS Images Thread
shac wrote:
Here's another foot for the 100-400 GM on Amazon.com
Leftfoto Lens Replacement Foot for Sony FE 100-400mm F4.5 GM OSS Lens
I’d be extra cautious if I were going to use the QD socket on the leftfoto. I purchased one for my 400-800 because I thought the Leofoto was a hair too tall.
I plugged my QD strap into the foot and thankfully I decided to pull on it to make sure it was secure (I often don’t). The QD connector came out with minimal force
I tried multiple times and it would not stay locked. Tried multiple connectors with the same result. Don’t know if this was a one off defect. Or something more. But I would proceed with caution
If you don’t use the QD socket, the foot is otherwise fine
p.2 #11 · Sony FE 600mm f/6.3 GM OSS Images Thread
robert614 wrote:
I’d be extra cautious if I were going to use the QD socket on the leftfoto. I purchased one for my 400-800 because I thought the Leofoto was a hair too tall.
I plugged my QD strap into the foot and thankfully I decided to pull on it to make sure it was secure (I often don’t). The QD connector came out with minimal force
I tried multiple times and it would not stay locked. Tried multiple connectors with the same result. Don’t know if this was a one off defect. Or something more. But I would proceed with caution
If you don’t use the QD socket, the foot is otherwise fine...Show more →
Good to know. I use Leofoto and so far didn't have any issues.
BTW, these are two tele lenses that I might skip buying extra foot. I usually buy them to carry around the setup and take ground level shots. Based on weight, I think I'll be able to use camera strap for carrying and hold the lens for ground level shots. Thoughts?
p.2 #12 · Sony FE 600mm f/6.3 GM OSS Images Thread
robert614 wrote:
I’d be extra cautious if I were going to use the QD socket on the leftfoto. I purchased one for my 400-800 because I thought the Leofoto was a hair too tall.
I plugged my QD strap into the foot and thankfully I decided to pull on it to make sure it was secure (I often don’t). The QD connector came out with minimal force
I tried multiple times and it would not stay locked. Tried multiple connectors with the same result. Don’t know if this was a one off defect. Or something more. But I would proceed with caution
If you don’t use the QD socket, the foot is otherwise fine...Show more →
Sorry to hear this Robert
I have the Leftfoto foot on both the 300/2.8 and the 100-400 V1. I selected it over the Leophoto foot because of my experience with the Leophoto foot.
Anyway after your experience I just tried attaching the Leophoto QD conector on both lenses feet and yanked really hard on them, to try to replicate your experience. Both held 100% firm.
I can only assume that the QD socket in Leftfoto foot for the 400-800 has QC problems. Not good.
p.2 #13 · Sony FE 600mm f/6.3 GM OSS Images Thread
shac wrote:
Sorry to hear this Robert
I have the Leftfoto foot on both the 300/2.8 and the 100-400 V1. I selected it over the Leophoto foot because of my experience with the Leophoto foot.
Anyway after your experience I just tried attaching the Leophoto QD conector on both lenses feet and yanked really hard on them, to try to replicate your experience. Both held 100% firm.
I can only assume that the QD socket in Leftfoto foot for the 400-800 has QC problems. Not good.
Thanks for checking yours
Good to hear it was just my foot and not a more widespread problem
Nevertheless, I will be double checking all my QD connections before I put any weight on them 😊
