The Sony A7S III "Dual ISO" and setting the camera up for VIDEO!
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- Опубліковано 14 вер 2020
- This is a short update to my rather long review. I now have my release camera and have checked to see if the "Dual ISO" point of the pre-production camera is the same, it isn't.
I show how big a difference it makes and where that switch is for different profiles.
I have also set the camera up for my ideal video settings, custom menus, shortcut buttons, function menu, picture profiles etc. You can download the settings file to load into your A7S III from the link below.
gopb.co/settings
Review of the Sony A7S III: • Review Of The Sony A7S...
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Buy the FX9 here: bit.ly/sonyfx9 - Фільми й анімація
Well demonstrated, Philip! Also, love your shirt! 🤓👌💜
@Gerald Undone, Gerald, a question, What's the best ISO value for extracting maximum allocation of dynamic range above the middle grey, think of shooting with A7S3 in a super sunny daylight, thanx.
@@peek118 I would say about 1250 without introducing much noise.
@@8lec_R Thanks,
well done Phillipe , hey Gerald ;)
do one of, probably both , of you know why Sony have different dual iso on different styles ?
Karma_Codeine I already answered didn’t I? Why would you just shoot at the lowest base iso as in 640?
The way that dual ISO works is generally in what's called the charge to voltage converter in the sensor. That's where the charge from the photocell is accumulated (or integrated) into a capacitor to produce a voltage, and it's that which is read by the ADC (analogue to digital converter) via an analogue amplifier. Generally a dual-ISO sensor will have two capacitors, and when running with the "low base ISO", both capacitors are in circuit. When running in the "high base ISO" mode, only one capacitor is used with, say, only about one-sixteenth of the capacitance of both combined.
The result is that, for a given charge, which is directly proportional to the number of photons detected in the photo-diode, the "high base ISO" mode will generate a voltage sixteen times higher (four stops) than in "low base ISO" mode. That means, in the "low base ISO" mode, for a given ISO, there would have to be a sixteen-times higher analogue amplification to be applied compared to the "high ISO mode". Unfortunately analogue amplification comes with a cost, which is added noise. Using a smaller capacitor provides that amplification without the added noise.
So, if the "low base ISO" adds noise, why do cameras not always run in the "high base ISO" mode all the time? The answer to that is dynamic range; the "high ISO mode" has much less headroom before it clips by exceeding the range of the ADC and other elements of the circuity. In short, it would clip highlights.
As to when the two modes are switched in, then that's going to be down to the fine details and optimisation of firmware in the camera. The exact details of how the "dual base ISO" feature is physically implemented is in the sensor.
What base ISO actually means in terms of SLOG adds another complication to the game as, at heart, it's a non-linear encoding of the luminance levels on the channels.
What Say Ye Sir Gerald Undone?
@Paul Lifewood It would not surprise me if the ADCs were also tweaked as well. As this is all fabricated in the sensor there are probably downsides in adding too much complexity.
There's an explanation of the basic principles here, which might be of interest.
www.sansmirror.com/newsviews/2016-newsview/jan-mar-2016-newsviews-2/dual-gain-becoming-the-norm.html
I can't remember who patented the idea first.
@Paul Lifewood Now I recall, it was probably Aptina that first patented the method which was called dual-gain or some such. No doubt each sensor manufacturer has it's own particular take and its own patents but probably have to cross-licence the original concept.
www.photonstophotos.net/Aptina/DR-Pix_WhitePaper.pdf
Kez I’m assuming he’s been married for at least 15 years.
Your explanation is perfect 👌 and I appreciate it. Glad someone understands the science. (:
Honestly the best duo in camera breakdown and in depth reviews is Gerald and Phil. I mean, if you want to KNOW your camera... its these guys. Period.
Yes
I learned about ‘stops’ and how they are calculated ... awesome. Thank you for that.
Finally got mine in and so glad you made this video. I came back to remember the ISO range where the switchover happens and then remembered you had the settings set up for us to start with. Much appreciated! That's going to make getting started much less work.
A personal thank you Phillip. I'm expecting my A7S3 next month, and your settings will be a great way to start with the new camera. Best wishes. Andrew.
Nicely illustrated, thanks for showing this.
This is GREAT NEWS. I can't wait for my camera to arrive.
Do you know the expected ship date?
How long have you been a Sony shooter?
@@WarriorsPhoto This will be my first. Were you being snarky a la Sony sucks at releasing?
@@baller2377 Very interesting point there. I am wondering what about my question lead to seeming "snarky"? Thank you for asking BTW.
Thanks for the info 🙌🏻. Looking forward to receiving mine next week. Haven’t been this pumped for a new camera since 2016
G'day from Australia Philip. I downloaded the settings and they're great. Thanks for all of the hard work you put into creating these videos.
Thank you very much for this video. After many years filming with an A7R II I´m finally purchasing an A7S III and I needed that clear information. Thank you again and greetings from Spain.
So calm, positive karma, so professional! Congrats for all your videos!
Nice! When I had test for my review I noticed that “jump” but I had thought that was an error on pre production model, nice to know this “dual iso” function.
Dear Phillip, Thanks for the settings file. A very generous gesture.
Amazing stuff! Weird they don't advertise this. Thanks for the vid Phil!
because it's not dual iso.
Juventin actually it essentially is.
Thank you, Phillip. Can't wait to get my A7Siii. Please continue these informative and rather entertaining videos, even though on the shorter timeframe side per your regular standards.
Thanks for the settings, very helpful and contains exactly everything that I ever need. Saved me a lot of time.
Also, as Gerald Undone pointed out, you can either count the stops, or, if it's easier to you, just multiply the base ISO by 20 to find out the second ISO where it cleans up.
Thanks for sharing your Menu settings. Wish you all the best, enjoying every video from you. Keep on that awesome work of yours.
Great and thanks for the settings as well. I can’t wait to see you covering the Gyroscopic Stabilization feature and how you like it 👍
This is great ... And the best part of it the sharing of the personal menu setting, huge thanks for that
This exactly what I was looking for plus the my menu settings 🥺 thanks my man! Subscribed!
Great video and super useful for us! This will help in selecting an appropriate PP when we film Aurora. Pretty excited to play with RAW for this purpose as well.
you will remain the legendary Philip for all of us , Big Thanks
Thank you for sharing your camera settings! I am looking forward to getting mine soon!
It’s amazing how much cleaner it gets. Thanks for this video!
Thanks for all the information and thank you for sharing your settings. That was very nice of you.
Thanks so much for sharing your settings. Look forward to trying them out when my unit arrives.
So glad that you can save settings to SD. It’s always been a bit of a nightmare copying them over manually.
This is so so helpful, thank you for your time teaching all this.
This is the best explanation of the dual ISO ever made.
Excellent information! I can't wait for mine to arrive!
Awesome, thank you for the info! You are an amazing filmmaker.
Thank you, very helpful. Appreciate you making your settings available.
Thanks Phillip super keen to get my unit!
Looking forward to seeing some more on the proress raw!
Thank you for the settings files Philip. It's greatly appreciated!
did they load? i couldn't get them to load. i went under 'reset/save settings' then LOAD > File name: "CAMSET01" and didn't work. any idea why? thanks
Philip to Sony: Looks like dual ISO to me!
Sony: It's not dual ISO, it's cleaner noise!
You are a master at your craft! Thanks for all you do! 👌🏽
Thank you Phillip for the settings!
awesome video! bookmarking this for when my fx3 comes in 😍
Bravo 👏 Philip!!! Very useful little video
Very informative and useful info. Thank you, Philip
I can’t wait to see your Fx6 review. I think that will be my next camera.
Incredible information! Thank you and Thank you for the Camera Settings File!
This is just brilliant. Thanks Philip
Thanks so much Philip for the settings doc - most appreciated - you star
So and so useful,
Thanks for sharing man.
This video was very useful, thanks Philip. Nice example
Brilliant video man! Clears so much up!
Wow very informative! Thank you for this Mr. Bloom
Thanks for sharing the file, great video!
Well explained and well demonstrated. Good job.
Awesome! Thank you Philip for sharing this information.
What a gent. Appreciate the My Menu settings
Thanks for the settings file! I’ll put it to good use... one day.
started understanding ISO a bit, thanks Philip!
This is game changing!
Thanks for the settings, appreciate it lots!
Thank you Philip. I will refer back to this video in a couple year's time when I buy my Siii :)
Hey Philip! I just bought two A7SIII for my youtube channel, and I'm using them with Atomos Ninja V, but I have a BIG problem... I'm getting a lot of noise, like a lot... I'm using Raw output mode, Atomos says it's 4,2k 60p, codec is Apple Pro Res, SLog3 and 640 ISO. Internal recording is a bit noisy but not as much as Atomos Ninja V, Atomos is crazy grainy... Do you have any idea of what is going on? Thank you!!
PD: I love your videos, I watched the full "Movies" about FX9 and A7SIII.
i've watched some other youtubers explain about this issue. its because when you're recording internally the camera did the noise reduction for you. As for the raw, you need to do that in post and you'll get cleaner image than the internal one. hope you find this useful.
I found the whole video (actually there is part 1 as well) very helpful. Jump here ua-cam.com/video/lq8UqQlO7I8/v-deo.html, if you just want to know what's going on with the noise.
Phillip, thanks for the settings file.
Thanks Philip this is very helpful.
Awesome! Thanks so much! Was going to save up cash to purchase but I might buy with 0% just in case Sony “updates” this great “feature” with a firmware update. Great video as always.
Thanks for sharing Philip!
THANKYOU so much for this help. Learned a lot definitely here. I really appreciate this. thank you again. All love.
Can’t wait to get mine!
Nice video, greetings
Very useful video!!! Thanks!! Hope I can get my a7sIII soon too!!👌
Thank you Philip. Very useful.
Thank you for the settings file
THANK YOU FOR SHARING THIS!
Very well demonstrated Filip!!! Like
Great demo! 👍🏻
Very well explained, thanks heaps
Thank you for the settings. I have two A7S 111 on order but I'm intrigued by the Cannon M70 that should be announced this week. As an entry-level cine camera, it looks intriguing. With a price point of around $6K it is definitely a cost. That said I'm very interested.
Thank you for your A7siii custom camera set up Bloomie! I like simple videos like this. Please do one on the use of the right Chapman? Venice lut? with Slog3 Gamut 3 Cine etc
Thanks for that! Love it.
Nice one Phil. I really like the composition and lighting in your piece to cam in this vid. The FX7 is so good here. I'd love to see you compare the A7 to the R5. I went for the R5 for photography reasons. Might get the A7 when I can afford it.
Thanks sir for this super helpful!
Good demonstration. This 'dual ISO' has always be present on the A7S Mk2 too BTW. The switch point for SLOG2/3 is also @ 12800 as you work your way up through the ISO range, but weirdly at 10000 as you work your way back down through the ISO range. I've always avoided shooting anywhere between 5000-10000 to avoid the worst of the noise. At least the switch point seems to be consistent now. Looking forward to receiving our FX9s little brother.
Thx for the demo and the menus! :)
did they load? i couldn't get them to load. i went under 'reset/save settings' then LOAD > File name: "CAMSET01" and didn't work. any idea why? thanks
Thank you for putting out your settings preset!
did they load? i couldn't get them to load. i went under 'reset/save settings' then LOAD > File name: "CAMSET01" and didn't work. any idea why? thanks
Thanks Philip, this is great!!
Thank you for the info!!
Thank you so much Phil
Great piece of information.
You are a wonderful teacher 👆
Nice demo Phill,Thank you.I think Sony did a good job on this camera for its price point.
Can't wait for my A7s3!!!
thanks for sharing 👍 awesome camera
That was really cool. Thanks.
This is great
Thanks Philip
Really great video
Informative... Thank You SIr
So glad that you investigated! I wonder how come it was lowered to 12,800 tho that's pretty interesting.
I can't wait to see your review the fx6 and the c70...
Ok maybe I'm dreaming but still worth a shot to mention.
@ Phillips Bloom
Brilliant Phillips and thank you.
Does the A7S 2 have a similar dual ISO like feature that we could have missed?
Yes it does, the switch point on the MK2 for SLOG2/3 is also @ 12800 as you work your way up through the ISO range, but weirdly at 10000 as you work your way back down through the ISO range.
Now I’ll have to figure out how to upload settings into the cameras via SD card. Thanks Phillip for all the tips!
It’s in the pdf
@@philipbloom you're the man
Thank you. Good job!!
Thanks Philip!best explanation!
steady shot cropping a bit someone was saying?
Very helpful, thanks.
Excelent! saludos From Argentina!