Sinar Long Exposure Noise Reduction?

[Mort54]

Hi All. Do Sinar eMotion backs provide a long exposure noise reduction mode, i.e. dark frame subtraction, or something similar. The specs say the backs can handle up to 32 second exposures, which is fairly short compared to Phase backs. Is long exposure noise reduction even needed for exposures of that duration? If they do provide long exposure noise reduction, can anyone tell me how well it works.

Thanks,
Hans.

[Morgan_Moore]

Hi All. Do Sinar eMotion backs provide a long exposure noise reduction mode, i.e. dark frame subtraction, or something similar. The specs say the backs can handle up to 32 second exposures, which is fairly short compared to Phase backs. Is long exposure noise reduction even needed for exposures of that duration? If they do provide long exposure noise reduction, can anyone tell me how well it works.

Thanks,
Hans.
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Any exposure over 1/2 a second I think kicks in a new Black ref file automatically

The 22 is muddy in shadow the 39 - dont know

I think the actual quantity of light makes a difference

i.e a daylight shot with loads of NDs would have no more noise than a short exposure whereas a dark shot will tend to be noisy irreleveant of exposure time

There are not hot pixels on the 22 unlike my old kodak and there was a phase thread too about hot pixels

I would imagine current products all align very similar - same chips

SMM

[mattlap2]

Hi All. Do Sinar eMotion backs provide a long exposure noise reduction mode, i.e. dark frame subtraction, or something similar. The specs say the backs can handle up to 32 second exposures, which is fairly short compared to Phase backs. Is long exposure noise reduction even needed for exposures of that duration? If they do provide long exposure noise reduction, can anyone tell me how well it works.

Thanks,
Hans.
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Hans,

The Sinar Emotion backs to get a black reference.   There are 2 ways of doing it under normal expsoure conditions.   You can set it to auto (every 15 minutes) or to next shot where it gets one after every shot.    I believe it defaults to next shot on longer exposures.

The new version of the Emotion backs.   The LV series is supposed to be better on longer exposure shots.   I do not have all the details yet and maybe Thierry can give you a better description of how it will do that.

Thanks,

Matt LaPointe
Sinar Bron Imaging
National Sales Support Specialist
(219) 670-9905
mlapointe@sinarbron.com

[thsinar]

the current eMotion backs (22 & 75) do handle long exposures (and resulting noise) the way discribed by Mat. However, with a slight additional point: it does automatically a black reference when the exposure time changes for more than 10% from one shot to the next. Otherwise," every 15 minutes" or "next shot".

- The e22 handles long exposures pretty well, at low ISO, as much as 32 sec. After that and at higher ISO, it pretty much depends on the available light (as mentioned by Sam), BUT ALSO on the temperature: high temperatures increase noise significantly (rehnniar has posted in detail about his shooting in Bangkok with his eMotion 22 & 75 and at 40°C +).

- The e75 handles long exposures and noise better, roughly due to different electronics inside. basically and compared to the e22, 1 to 2 stops better, although it mainly depends on the environement temperature (I guess Antartica would not that much be a problem as compared with Bangkok!).

This being said: Captureshop includes a "noise reduction" tool with different possibilities to filter the noise (Chrominance/Luminance, Fine Tuning, Low Frenquencies, etc...).

As for the new coming eMotion 54 LV and 75 LV: yes, the noise produced at long exposures/high ISO will be significantly improved. These 2 eMotions do have a completely new internal HD and electronics: an "upgrade" from e22 to e 54LV is actually not an upgrade, but a "swap" to a completely new back.

More can be said when available.

Best regards,
Thierry

Hans,

The Sinar Emotion backs to get a black reference.   There are 2 ways of doing it under normal expsoure conditions.   You can set it to auto (every 15 minutes) or to next shot where it gets one after every shot.    I believe it defaults to next shot on longer exposures.

The new version of the Emotion backs.   The LV series is supposed to be better on longer exposure shots.   I do not have all the details yet and maybe Thierry can give you a better description of how it will do that.

Thanks,

Matt LaPointe
Sinar Bron Imaging
National Sales Support Specialist
(219) 670-9905
mlapointe@sinarbron.com
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[Mort54]

As for the new coming eMotion 54 LV and 75 LV: yes, the noise produced at long exposures/high ISO will be significantly improved. These 2 eMotions do have a completely new internal HD and electronics: an "upgrade" from e22 to e 54LV is actually not an upgrade, but a "swap" to a completely new back.
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Hi Thierry. I think I recall you saying in an earlier thread that the e75LV was just a firmware upgrade, since it already has the newer electronics internally. Is that still your understanding, or does an upgrade from the e75 to the e75LV require sending the back in to get some of the electronics swapped out? I won't ask when the LV backs are going to be available, since I and others have given you and Sinar such a hard time in the past for preannouncements  

Regards,
Hans.

[thsinar]

Dear Hans,

you are right, that's what I said, but in the meantime I have been proven wrong! The e75 LV will have as well a hardware change and new electronics.

However, an upgrade from e75 to e75 LV will be a real upgrade, with exchange of the internal HD, not a simple "swap": the back needs to be sent to factory for this upgrade.

Availability is still planed for the coming next end of the month.

Thierry

Hi Thierry. I think I recall you saying in an earlier thread that the e75LV was just a firmware upgrade, since it already has the newer electronics internally. Is that still your understanding, or does an upgrade from the e75 to the e75LV require sending the back in to get some of the electronics swapped out? I won't ask when the LV backs are going to be available, since I and others have given you and Sinar such a hard time in the past for preannouncements   

Regards,
Hans.
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[Mort54]

Dear Hans,

you are right, that's what I said, but in the meantime I have been proven wrong! The e75 LV will have as well a hardware change and new electronics.

However, an upgrade from e75 to e75 LV will be a real upgrade, with exchange of the internal HD, not a simple "swap": the back needs to be sent to factory for this upgrade.

Availability is still planed for the coming next end of the month.

Thierry
[a href=\"index.php?act=findpost&pid=109276\"][{POST_SNAPBACK}][/a]

Hi Thierry. When you say "exchange of the internal HD", what do you mean by HD? That's not really a hard drive is it, or is it? Or do you mean the memory buffer? Just curious.

Hans.

[thsinar]

sorry Hans, I meant internal hardware, not harddrive, of course.

Thierry

Hi Thierry. When you say "exchange of the internal HD", what do you mean by HD? That's not really a hard drive is it, or is it? Or do you mean the memory buffer? Just curious.

Hans.
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