Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?

Started Jan 20, 2019 | Questions
seagoat8888 New Member • Posts: 14
Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?

I'm finding that when my Z7 is looked up to my Ninja V, it won't let me use lower than 800 ISO (can't get to 400/200/etc).  I can't think of why this limitation would exist...  Any thoughts?

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Nikon Z7
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Horshack Veteran Member • Posts: 8,284
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
4

When N-Log is enabled, the minimum ISO is 800 (Page 346 of the Z7 manual). A higher base ISO is nearly-universal when using log profiles on digital cameras.

Denny Smith 16 Contributing Member • Posts: 640
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
1

Correct, this is in the camera manual, and I get the same results with my PixE and N Log. That said, you can turn N Log off, and shoot in video Rec 709 to get ready to use ProRes files on both the Ninja V and Pix E, then you can select down to ISO 100, but 200 will give a little more dynamic range in Video mode. In N Log, ISO 800 is the sweet spot, from tests I have seen.  You can add ND filters to help control the exposure and use the f/stop yiu need for the shot.
Cheers

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Nikon 1 V1 Olympus PEN-F Nikon Z6 Nikon 1 Nikkor 10mm f/2.8 Nikon 1 Nikkor 18.5mm f/1.8 +16 more
OP seagoat8888 New Member • Posts: 14
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?

Denny Smith 16 wrote:

In N Log, ISO 800 is the sweet spot, from tests I have seen. You can add ND filters to help control the exposure and use the f/stop yiu need for the shot.
Cheers

"Sweet spot" implies that above or below has disadvantages.  If lower than ISO was an option, what would the downside be?  Sorry, I'm just having trouble accepting that the lowest ISO for video on a $3k new camera is 800, that's awfully noisy.  What part of capturing data in a different LUT requires capturing at a higher sensor sensitivity?

thejohnnerparty Senior Member • Posts: 1,095
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?

I have nothing to contribute to this thread, but it is an interesting topic. I just want to follow along as people post.

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Sony RX100
syberman7 Senior Member • Posts: 1,344
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?

Horshack wrote:

When N-Log is enabled, the minimum ISO is 800 (Page 346 of the Z7 manual). A higher base ISO is nearly-universal when using log profiles on digital cameras.

Do you know why this is the case?

 syberman7's gear list:syberman7's gear list
Olympus E-M1 II Nikon Z6 Nikon AF-S Micro-Nikkor 60mm F2.8G ED Olympus 12-40mm F2.8 Pro Olympus M.Zuiko 300mm F4 IS Pro +7 more
ijm5012 Senior Member • Posts: 1,889
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
2

Nikon Z7: $3400

Atomos Ninja 5: $700

Not reading the manual, and shooting in Log without understanding it: Priceless

 ijm5012's gear list:ijm5012's gear list
Nikon D500 Nikon Z6 Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II Nikon AF-S Nikkor 300mm f/2.8G ED-IF VR Nikon Z 24-70mm F4 +6 more
Andre Yew Contributing Member • Posts: 787
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
2

syberman7 wrote:

Horshack wrote:

When N-Log is enabled, the minimum ISO is 800 (Page 346 of the Z7 manual). A higher base ISO is nearly-universal when using log profiles on digital cameras.

Do you know why this is the case?

It depends on the camera. Nikon hasn't given us enough information about their log to know what's going on, but if it's like Sony's implementation, the ISO setting doesn't affect the sensor when recording in log. The sensor is recording at its base ISO and the ISO setting is chosen by Sony to make sure the exposure meter gives the user the right readings to expose log correctly.

jambalawa Contributing Member • Posts: 871
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
1

ijm5012 wrote:

Nikon Z7: $3400

Atomos Ninja 5: $700

Not reading the manual, and shooting in Log without understanding it: Priceless

No need for this mate. We all had to start videoing in log for the first time sometime didn't we? The cost is irrelevant.. the camera is a very good stills camera and video (non-log) camera...   I guess he could've read the manual but there'd still be questions...

So he wants to learn about this log stuff.. good on him.

My 2 bits worth to the OP - my GH5 has a similar constraint.. i think its ISO400 but not sure.. same with my DJI Phantom Pro 4 drone.. something to do with sweet spot for DR etc i think... as you do shoot log for maximum DR and just maximising post processing in general.. almost like a native ISO or something..

 jambalawa's gear list:jambalawa's gear list
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douglas_robert Forum Member • Posts: 58
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
1

does anyone know if its the same on the Z6.. I just ordered the Ninja V and I don't have a manual to look it up

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Nikon D750 Nikon Z6
Andre Yew Contributing Member • Posts: 787
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?
1

Yes, it's ISO 800 on the Z6 when using N-log.

gestaltdev Junior Member • Posts: 40
Re: Nikon Z7 with Atomos Ninja 5: lowest ISO allowed is 800?

The Z series cameras are iso-less https://improvephotography.com/34818/iso-invariance/

ISO in modern digital camera does not behave as it did in film cameras. Also the Z6 and Z7 have dual Gains. The Z6 has one Gain circuitry up to ISO 640 and another from ISO 800.

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