I'm a believer, 6400 ISO C3/Zeiss 24mm

Started Nov 28, 2012 | Discussions
Jerry R
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I'm a believer, 6400 ISO C3/Zeiss 24mm
Nov 28, 2012

For someone who would not use film above 100 ASA, 6400 ISO C3 & Zeiss 24mm, 2 pics & crops.

I'm a believer.



6400 ISO



1 meg crop



6400 ISO



1 meg crop

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DtEW
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to Jerry R, Nov 28, 2012

1/200s? 1/500s??

Why???

You can probably shoot all of these at ISO1600, maybe even ISO800.

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wwwOKCOMEONcom
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to DtEW, Nov 28, 2012

DtEW wrote:

1/200s? 1/500s??

Why???

You can probably shoot all of these at ISO1600, maybe even ISO800.

probably due to aperture priority

if I were him, I would take a photo first,then adj the exposure setting
using lower iso
Of course,if I could (could I ?) read the exif data on LCD before pressing shutter button
I would adj the exposure setting immediately

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paul1508
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to wwwOKCOMEONcom, Nov 28, 2012

wwwOKCOMEONcom wrote:

DtEW wrote:

1/200s? 1/500s??

Why???

You can probably shoot all of these at ISO1600, maybe even ISO800.

probably due to aperture priority

if I were him, I would take a photo first,then adj the exposure setting
using lower iso
Of course,if I could (could I ?) read the exif data on LCD before pressing shutter button
I would adj the exposure setting immediately

If you press AEL all data is shown (Shutter, Aperture, ISO and so on)

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makeitso
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to wwwOKCOMEONcom, Nov 28, 2012

wwwOKCOMEONcom wrote:

DtEW wrote:

1/200s? 1/500s??

Why???

You can probably shoot all of these at ISO1600, maybe even ISO800.

probably due to aperture priority

if I were him, I would take a photo first,then adj the exposure setting
using lower iso
Of course,if I could (could I ?) read the exif data on LCD before pressing shutter button
I would adj the exposure setting immediately

That doesn't make sense. You have to manually set the ISO at 6400 for the camera to make use of it. So this is either user error or intentional. But as was said, with those shutter speeds you very easily could of dropped the ISO down and been more impressed with an ISO 1600 image of the same scene.

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Jefenator
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to makeitso, Nov 28, 2012

Maybe OP was deliberately running a high-ISO test. 

If not, don't feel bad - I've done the same sort of thing. (One of the reasons I shoot manual, now - forces me to pay more attention.)

The samples do look pretty good!

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tri x
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to Jerry R, Nov 28, 2012

Well Jerry,

with all the experts getting there knickers in a twist, Its still shows you what you can get at the top end. Well done is what I say.

Cheers John

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tri x
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to Jerry R, Nov 28, 2012

Well Jerry,

with all the experts getting their knickers in a twist, it still shows what you can get at the top end.

Well done is what I say.

Cheers John

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Jerry R
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The ISO was set to 6400. Two reasons:
In reply to tri x, Nov 28, 2012

The ISO was set to 6400. Two reasons:

1. Wanted to see if it were acceptable to me, and I am very pleased. I have no reason now not to shoot upto 6400 ISO.

2. These were handheld, there is still some motion blur on the pic of the screen, 1/200 sec.

The second pic at 1/400 sec is sharper.

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uhligfd
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Re: The ISO was set to 6400. Two reasons:
In reply to Jerry R, Nov 28, 2012

If you experience repeated motion blur at 1/200 sec at 24mm focal length, may I suggest you lay off the coffee or whatever makes you shake so much. Maybe learn to hold a camera steady with elbow bracing, ... Eventually one should be able to hold that lens steady at around 1/60 to 1/100 sec at the worst and down to to 1/30 or 1/15 sec at the best of one's physical conditioning.

And if this is due a medical condition, I apologize for bringing it up. Sorry.

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Jerry R
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If you can eliminate motion, hand holding at 1/30 of a sec, your better than most pros.
In reply to uhligfd, Nov 28, 2012

If you can eliminate motion, hand holding at 1/30 of a sec, your better than most pros. Back in the 1970s an article compared images taken by a very respected wildlife photographer. He took hand held pics at 1/1000 of a sec and the same pics with a camera on a tripod. The hand held pics, when viewed with a loop, would not be acceptable for publication. I usually found, in the good old film days, that a speed of 1/focal length was good enough. With the ability to crop digital images from 16 meg to 1 meg (for viewing on a screen, not prints) a much faster shutter speed is required. 1/24 sec would not produce clear 1 meg crops.

On a personnel not, I have been holding cameras (properly) probably since before you were born.

Not as steady as I use to be, but still will put my technique up against someone who is 50 years young without the years of experience.

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chromnd
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Re: The ISO was set to 6400. Two reasons:
In reply to uhligfd, Nov 28, 2012

uhligfd wrote:

If you experience repeated motion blur at 1/200 sec at 24mm focal length, may I suggest you lay off the coffee or whatever makes you shake so much. Maybe learn to hold a camera steady with elbow bracing, ... Eventually one should be able to hold that lens steady at around 1/60 to 1/100 sec at the worst and down to to 1/30 or 1/15 sec at the best of one's physical conditioning.

And if this is due a medical condition, I apologize for bringing it up. Sorry.

As uhligfd already said, I also wonder how on earth you can have motion blur with 1/200 and 24mm.

But what's another aspect of this test: You have not really a lighting condition that requires ISO6400. If you come in a situation where you'll need ISO 6400 with 24mm and maybe a shutter speed of 1/40s @ f.18, you'll notice much more noise as the noise gets worse in the dark.

So for a better noise test, just go out at night, put your camera to ISO 6400 and try to capture some static night scene, that has just enough light for <1/60s at 24mm and f1.8.

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Jerry R
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Chromnd: I choose the ISO & f/2.2 to see if I would get acceptable images (for me) in a
In reply to chromnd, Nov 28, 2012

Chromnd: I choose the 6400 ISO & f/2.2 to see if I would get acceptable images (for me) in a museum setting while traveling. I don't think I will get acceptable crops (for me) at shutter speeds less than 1/500 sec. The NEX C3 and Zeiss lens are capable of producing excellent images from crops, here is 1/4 meg crop taken from inside a moving bus.



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Jerry R
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300 mm FOV for a 1 meg crop from the 16meg C3 & Zeiss 24mm (36 mm FOV) so
In reply to Jerry R, Nov 28, 2012

300 mm FOV for a 1 meg crop from the 16meg C3 & Zeiss 24mm (36 mm FOV) so 1/500 of a sec is reasonable.

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chromnd
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Re: Chromnd: I choose the ISO & f/2.2 to see if I would get acceptable images (for me) in a
In reply to Jerry R, Nov 28, 2012

Jerry R wrote:

Chromnd: I choose the 6400 ISO & f/2.2 to see if I would get acceptable images (for me) in a museum setting while traveling. I don't think I will get acceptable crops (for me) at shutter speeds less than 1/500 sec. The NEX C3 and Zeiss lens are capable of producing excellent images from crops, here is 1/4 meg crop taken from inside a moving bus.



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Well, cropping can be seen as an extension of focal length, so if it is your intention to crop, then this has to be considered. The basic rule is 1/focal length * crop factor. For 24mm focal length and an APS-C sensor this means 1/35s minimum shutter speed if everything else is steady.

If you're in a moving bus, the story is of course completely different. I'm not quite sure what "1/4 meg" is in focal length, but if I'd assume that because of your crop you have focal length of 100mm (35mm equiv.) than you'll need at least 1/150s.

So cropping sure boost shutter times.

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chromnd
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Re: 300 mm FOV for a 1 meg crop from the 16meg C3 & Zeiss 24mm (36 mm FOV) so
In reply to Jerry R, Nov 28, 2012

Jerry R wrote:

300 mm FOV for a 1 meg crop from the 16meg C3 & Zeiss 24mm (36 mm FOV) so 1/500 of a sec is reasonable.

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yes, agreed.

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Jerry R
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Off by a factor of 2, should be 150mm eqv. FOV for 1.2k x 0.8k.
In reply to chromnd, Nov 28, 2012
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Cane
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Re: The ISO was set to 6400. Two reasons:
In reply to Jerry R, Nov 28, 2012

Jerry R wrote:

The ISO was set to 6400. Two reasons:

1. Wanted to see if it were acceptable to me, and I am very pleased. I have no reason now not to shoot upto 6400 ISO.

2. These were handheld, there is still some motion blur on the pic of the screen, 1/200 sec.

The second pic at 1/400 sec is sharper.

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Shake reduction would be nice. it wouldn't require iso 6400.

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beetle0042000
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Re: I'm a believer, 6400 ISO C3/Zeiss 24mm
In reply to tri x, Nov 28, 2012

HHT mode ??

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Jerry R
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Will try HHT next.
In reply to beetle0042000, Nov 28, 2012
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