Electronic Shutter

[Eugene Lehnert]

How does the electronic shutter on the Scarlet work? Why do DSLR cameras have physical shutters when the RED does not? Do high shutter's on the RED affect dynamic range?

 

[Gunleik Groven]

To your last question: Nope.

To the 1st, main thing is probably that electronic shutters are cheaper and more reliable for many uses....

 

[Terry VerHaar]

If I am not mistaken, the physical shutters on DSLRs only function for stills. For motion, they use an electronic shutter just like every other motion camera.

 

[Ted Parkes]

Completely different designs. In order to make the motion cameras smaller they had to go to a electronic shutter. A DSLR shutter design can't function fast enough and would cause all kinds of vibrations above a few frames per second. DR is subject of the sensor and exposure but not the shutter speed if properly exposed.

 

[Gunleik Groven]

There are digital cameras with optical shutters, but they do become significantly more expensive, and moving parts are prone to... moving-parts-failure.

http://tessive.com/mechanical-shutter-comparison/

 

[Eugene Lehnert]

Interesting. Thanks everyone.

 

[Antony Newman]

If you do want to have a mirror in the path (as in dsl'R'), you already have a physical object (mirror) you need move out the way when taking a picture - and so there is already going to be a wear and tear issue / and so having an mechanical shutter doesn't seem odd.

Having a the expose mechanism independent of the electronic sensor reading affords you other (simpler) electronic sensor reading options - eg reading from the sensor in pitch blackness (lower noise) ... which could mean you can read the data slower.

Many DSLRs allow you to do both.

AJ

 

[Eugene Lehnert]

Can you therefore theoretically build a camera with a physical shutter to help improve the quality of the image coming from the sensor? Is this how the global shutter from RED works?

 

[Christian Jadot]

Or you can get the motion mount. Which, to my best understanding, simulates a mechanical shutter digitally/electronically.

From what I understand, it is an LCD screen placed in front of the sensor. It stays black until it is time to take the picture then globally opens up and closes, like a mechanical shutter. Only it is and LCD screen instead of a mechanical shutter.

 

[Paul Schneider]

How does the electronic shutter on the Scarlet work? Why do DSLR cameras have physical shutters when the RED does not? Do high shutter's on the RED affect dynamic range?

I believe Arri and Aaton both have made physical rotating shutters in digital film cameras.
No dslr has a physical shutter for video, and most seem to be trying to do away with them completely for stills as well.

As far as dynamic range, the chip's range in any camera is what it is and is only by the shutter in so much as the combination of the degree of shutter is one factor that controls how much light hits that chip in the first place.

 

[Vadim Bobkovsky]

I believe new revisions of Sony F65 have quiet mechanical shutter built-in this time, F55 has electronic one. What I'm curious about is "soft shutter" feature in Motion Mount, is it like Tessive effect at all?

 

[Robert Ruffo New]

Motion Mount IS a Tessive filter

 

[Jake Wilganowski]

Pretty sure Red bought Tessive tech.

Why they haven't bought Action Products who basically make by far the BEST functional and sexy epic accessories i'll never understand...