Electronic shutter vs. mechanical shutter

Joined
May 4, 2007
Messages
399
Location
So. Cal
I was wondering if anyone had any theories as to why Nikon didn't stick with the faster flash sync speed of the electronic shutter on their more recent bodies?

Did they not feel is was cost effective? Wouldn't a faster flash sync speed be something everyone would want?
 
Joined
Jul 14, 2007
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Location
Bay Area, USA
Only their 6MP sensor has an electronic/digital shutter

that is not to be confused with electromechanical shutters, which all Nikon DSLRs have.
 
Joined
May 13, 2007
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990
Location
Cleveland, OH
I've quite enjoyed the 1/500th flash sync for shooting outdoors with my D70. :smile:

It will be a bit strange when I switch to something new and have half the shutter speed with flash.
 
Joined
Aug 29, 2007
Messages
848
Location
Vancouver
Does anyone know why they do not still use and digital shutter? The only reason I can think of is that the electrical current might mess with the sensor and increase the noise. Other than that, it would seem that the digital one has many advantages to the mechanical, such as faster sync speed, increase life, etc.
 
Joined
May 4, 2007
Messages
399
Location
So. Cal
Does anyone know why they do not still use and digital shutter? The only reason I can think of is that the electrical current might mess with the sensor and increase the noise. Other than that, it would seem that the digital one has many advantages to the mechanical, such as faster sync speed, increase life, etc.

That's what I would like to know. Why would they not continue to add it to their other bodies. To me going to a mechanical shutter when you can use an electronic shutter is going backwards.

1/500th flash sync.....1/200th or 1/250th? Seems more than a no brainer to me.
 
T

TonyBeach

Guest
Blooming. The problem was noticeable on electronic shutters and Nikon solved it by returning to mechanical shutters.
 
Joined
May 11, 2006
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Northern Italy, Piemonte
according to thom hogan, it has to do with a change in the way data is read off the sensor. i have no experience with that, maybe someone with a chip design background can confirm this

ricky
Thom's right, just like Mom said, "Kid, there ain't no free lunch".

Read this for more information especially if you like articles which start out with, ".......a capacitive coupled bipolar active pixel based imager
having overflow protection and electronic shuttering features.":eek:

Bottom line: Electronic shutters must be designed with pixels which are read by the camera's processor in such a way that the image quality is sacrificed. That's why, in spite of some attractive features like high sync speed, you don't see them in high end cameras, at least in today's market.
 
Joined
Sep 24, 2007
Messages
1,003
Location
Austin
Basically the sensor in the 6mp Nikon cameras has a mechanical shutter as a way to block light to the sensor to improve performance. It's not really required per se. The sensor itself is told when to start grabbing light for a shot. That's the same way almost every P&S camera works as well. So the shutter gets out of the way, THEN the sensor is activated, then the shutter covers it up.

A purely mechanical shutter gets out of the way to let the actual light in. The "higher end" sensors don't have electronic shutters because of the extra cost require to design them that way and to build the sensor. It's relatively easier to design a good sensor that is activated when the light hits it and not when it's told to start reading. The light grabbing materials can be more accurate if they don't constantly see light.
 
Joined
Sep 17, 2006
Messages
12,093
Location
Hamilton , New Zealand
I just bought a new D70S , old stock , brand new 12 month Nikon waranty because it has the 1005 segment meter and high speed flash synch . I played around with my SB24 and 1/2000th sec .

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It didn't quite catch all the light at 1/8000th sec but I can live with that , and whatever supposed loss in image quality that I can't detect .

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