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Messages - 70MM13

#501
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 07:10:31 PM
Because sometimes a lower ISO is just better, like outdoor shots.

It's nice to be able to drop to the 60 range also for extreme cases.

It's just useful to have the capability...
#502
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 05:41:38 PM
I did more tests using your methodology and found that the shadows really are about the same as stock 200.

This is actually a good thing.

What this means is shooting at "ISO" 111, but with ISO 200 shadows.

Stock ISO 100 is junk, and it is great to have this alternative that actually looks good.

And again, there's all of those other registers.  How much better can it get?  Who knows?

I'll be using stock ISO 200 for less demanding shots, but I'll definitely keep using 111 for the tough ones, like almost everything in this video.
#503
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 04:27:30 PM
100 stock ISO is pretty horrible, indeed.

That's one place where gain reduction is definitely good, making a great looking "100" out of 200 to get better outdoor and other very bright shots.
#504
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 03:46:03 PM
You were right!

The test as you instructed yields almost identical results.  It's not worth the effort to upload nearly identical samples.

I still hope someone digs deeper into these registers to make bigger improvements!

This is only scratching the surface.  Two registers out of how many?
#505
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 03:08:41 PM
Ok, I'm on it...
#506
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 02:47:45 PM
For my next video, I'll do a comparison in actual use.

I'll shoot with both modes when possible...
#507
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 02:42:40 PM
I respectfully disagree.

In the year I've been using this method, I've always gotten better results than with stock ISO, even for stills.

To get similar shadows requires a much higher ISO, and then the highs get clipped.

It may be that my shooting style is simply better suited for this mode, but getting better results is no placebo.
#508
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 02:15:27 PM
Will do.

Keep in mind that I am not really doing anything elaborate with any hidden registers.  I don't even try to do anything special, just drop gains for cleaner shadows.

I still think that if this was done by someone serious (like you, Danne!) It could be improved greatly...

I'm into filming.  You guys are the scientists!
#509
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 02:02:36 PM
I'm not surprised, but for me it's all about better shadows.  When I lift them it is better than stock ISO.

The video shows what I'm saying.

It works for me...
#510
Wow, excellent!

The only big thing that's missing for me now is receipt slots.

Essential for my working style.
#511
Share Your Videos / Re: Another reduced gain video
November 25, 2018, 12:49:45 PM
All I did was 0xFE 0, and ADTG preamp 3.

Exposed for no highlight clipping.

I shot it a few weeks ago and the camera settings may have changed slightly since then, but I'm fairly certain that this was it.

No way to be absolutely sure.  I don't keep notes.

#512
Share Your Videos / Another reduced gain video
November 25, 2018, 02:48:47 AM
Addendum:  here's the finished version:

https://youtu.be/W1jrxnZryDQ


Shot entirely at ISO 111 (dropped from 200)

#513
My statements were not in the right context.  My fault.

I was referring to my experiences with reduced gain by hand, not with Danne's experiment.  I have only used it to take those test shots.  It seemed like it was behaving the same way, which it may indeed, but I was going by my impression of how it behaves the same way under the familiar test conditions.

It may be that on a statistical level, the reduced gain is only marginally better, but in practice, I find it vastly superior.  There's still noise in the shadows, but it's more like film grain, and it is usable when pushed hard.  I can't do the same with stock ISO.

It works for me.
#514
I did a bunch of tests and found that the benefits are primarily for 100, falling off to equal by 400.

I was exposing to the right in the tests, using the bulb as the reference point by eye at 10X zoom, adjusting first by increasing the f stop and then by shutter speed when I hit the aperture limit.

I also don't know what Danne has done "under the hood", and so it may be that the test is invalid for actual ISO comparison.

Until today, I've been doing this by hand with the iso registers using your modules, knowing for example that I'm dropping 200 to 109, my most common setting.

I know exactly how well that works for me in extremely challenging circumstances, and I know that the iso 109 I am using really acts like 109 but with cleaner shadows.

I have to get back to the editor.  Hopefully something good will come from this, I know that I will be using it!
#515
Stock 400 did surprisingly well, but not as good as Danne 100.

Stock 1600 was unusable when pushed.  Not worth the data...

For me, 100 with clean shadows is heaven :)

Here's the DNG:

https://drive.google.com/file/d/1htZlLLEZTsXqRujzj7SV90sP1GcxzrxC/view?usp=drivesdk
#516
At these exposures, stock 400 and especially 1600 are just a pile of noise when the shadows are lifted to my liking.

Maybe this isn't for everyone, but it sure works for me!

I'm a happy camper getting excellent results, and the last time I checked, that's what really matters...
#518
200 stock ISO, same exposure...

The proof is in practice.

#519
Ok guys, here's the proof everyone needs...

I used a manual aperture lens and made absolutely sure that both exposures are identical.  This is a serious stress test.

See for yourself.

There's a bit of loss of highlights, but for practical purposes it is negligible.

I've been doing this by hand for all of my videos for the last year, and I am overjoyed to be able to do it so easily now.

Overwhelming thanks to Danne!

And of course to the wizard a1ex!



#520
Nice!
It works for me also, starting at -17.
-16 gave a black frame, and a screen full of errors, but it kept recording anyway.
I only get about 1000 frames before it can't keep up.
#521
Are you able to get continuous recording at 1080 48fps?

I'd like to know what to expect before I begin the test.
#522
Wow!
#523
If this can be done to the top ISO in dual ISO, the results would be tremendous.
#524
Quote from: vstrglv on November 02, 2018, 07:17:36 PM
But there is a lot of horizontal stripes. Is it normal?

Do you mean in the sample MLV I uploaded?

If so, I don't see any horizontal stripes.  Are you sure you turned on dual ISO under the raw correction tab on mlvapp?
#525
Thanks, Danne.

I will play with it!

It's so great to have these capabilities from our outdated cameras!