Page 1 of 2 12 LastLast
Results 1 to 20 of 25

Thread: Which setup will have faster shutter speed?

  1. #1

    Default

    Nikon DSLR APS-C with 85mm f2.8

    VS

    Olympus m4/3 with 60mm f2.8

    This is assuming two cameras side by side shooting same thing same light source at f2.8.
    Last edited by sin77; 22nd March 2014 at 01:53 PM.
    D7100,SB910,17-50/2.8OS,105/2.8VR,85/1.8D,2xE-M1,O60/2.8,12-40/2.8,35-100/2.8,14-42,LX100

  2. #2

    Default

    Amended my post above.

    Also note that 60mm is around 90mm for apsc
    D7100,SB910,17-50/2.8OS,105/2.8VR,85/1.8D,2xE-M1,O60/2.8,12-40/2.8,35-100/2.8,14-42,LX100

  3. #3

  4. #4
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,902

    Default

    If ISO is the same, aperture the same.....
    Than so does, shutter shttur speed..
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  5. #5

    Default Re: Which setup will have faster shutter speed?

    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?
    D7100,SB910,17-50/2.8OS,105/2.8VR,85/1.8D,2xE-M1,O60/2.8,12-40/2.8,35-100/2.8,14-42,LX100

  6. #6
    Senior Member shierwin's Avatar
    Join Date
    Dec 2008
    Location
    East Coast
    Posts
    3,335

    Default Re: Which setup will have faster shutter speed?

    Aperture dictates the amount of light that will reach the sensor; no size of barrel

  7. #7
    Moderator keithwee's Avatar
    Join Date
    Aug 2010
    Location
    LittleRedDot
    Posts
    7,890

    Default

    Same same. Though I'm sure some shops will tell the buyer the bigger the barrel the better it is

  8. #8
    Member snowver's Avatar
    Join Date
    Oct 2011
    Location
    Singapore, Singapore, Singapor
    Posts
    151

    Default

    Same same

  9. #9

    Default

    Quote Originally Posted by sin77
    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?
    Exposure Triangle (aperture, shutter speed & ISO) has nth to do with barrel.

  10. #10
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,902

    Default Re: Which setup will have faster shutter speed?

    Quote Originally Posted by sin77 View Post
    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?

    Big Barrel has noting to do with that,
    Aperture area[edit]

    The amount of light captured by a lens is proportional to the area of the aperture, equal to:
    Where f is focal length and N is the f-number.
    The focal length value is not required when comparing two lenses of the same focal length; a value of 1 can be used instead, and the other factors can be dropped as well, leaving area proportion to the reciprocal square of the f-number N.
    If two cameras of different format sizes and focal lengths have the same angle of view, and the same aperture area, they gather the same amount of light from the scene. In that case, the relative focal-plane illuminance, however, would depend only on the f-number N, so it is less in the camera with the larger format, longer focal length, and higher f-number. This assumes both lenses have identical transmissivity.
    http://en.wikipedia.org/wiki/Aliasing
    Last edited by catchlights; 23rd March 2014 at 09:27 AM.
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  11. #11
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,902

    Default Re: Which setup will have faster shutter speed?

    Quote Originally Posted by sin77 View Post
    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?
    barrel is bigger.......... like 大支就好? lol.

    when the aperture setting is the same, it will be same amount of light reach the sensor, regardless different focal length lenses, different format cameras.
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  12. #12

    Default

    The thing that can think of that may give u different shutter speed is due to metering of each different camera?

  13. #13

    Default

    Quote Originally Posted by sin77 View Post
    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?
    If u r talking about absolute size of aperture, then yes (e.g 30mm, 57.8mm diameter etc).
    But the f number on your camera is not an absolute size. It is a ratio..thus, barrel size is normalized in this case.

    So answer is: same same. Heh.

  14. #14
    Member
    Join Date
    Aug 2010
    Location
    East side
    Posts
    1,181

    Default Re: Which setup will have faster shutter speed?

    Quote Originally Posted by sin77 View Post
    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?
    Catchlights has provided a very clear explanation in post #10.

    If I may add on, for the same f-stop a larger sensor would require a larger diameter lens, compare to a smaller sensor, to illuminate the entire sensor without vignetting. In absolute terms, for the above 2 lenses, the Nikon lets in more light. To picture this, imagine mounting the 2 lenses on a (hypothetical) camera with a 1/2" sensor. So your comment will be true in such a case. But when you couple these lenses to their corresponding format they achieve for their respective sensor the same illumination.
    Canon | Oly | Fuji

  15. #15
    Senior Member alwaysjerricky's Avatar
    Join Date
    Mar 2013
    Location
    +65
    Posts
    2,016

    Default

    Yup same same

  16. #16
    Moderator ortega's Avatar
    Join Date
    Nov 2004
    Location
    Singapore, Singapore, Singapor
    Posts
    23,686
    Blog Entries
    7

    Default Re: Which setup will have faster shutter speed?

    the one with an underexposed image

  17. #17

    Default Re: Which setup will have faster shutter speed?

    Roughly the same shutter speed provided transmissivities of the 2 lenses are about the same.
    (I guess if it is 85mm f1.4g, it will have more transmission - although negligible)

    why not try and let us know the answer?

  18. #18
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,902

    Default Re: Which setup will have faster shutter speed?

    Quote Originally Posted by ortega View Post
    the one with an underexposed image
    lol, user error??
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  19. #19
    Senior Member wildcat's Avatar
    Join Date
    Sep 2004
    Location
    Bedok
    Posts
    3,268

    Default Re: Which setup will have faster shutter speed?

    Quote Originally Posted by sin77 View Post
    but since the barrel is bigger, doesn't it means more light will reach the sensor and hence higher shutter speed?
    I can see where you are confused.

    1. Yes, it is true that APS-C will have more light going in at f2.8 than m4/3 going in at f2.8
    However APS-C lens will have to illuminate the entire APS-C sensor, while the m4/3 will only have to illuminate the m4/3 sensor. So it is the same shutter speed at the same ISO and aperture as explained in so many of the above posts already.

    2. Now, since APS-C captures more light than m4/3 sensor, all things being equal (i.e. the sensors are the same), it would mean that there would be less noise with APS-C than M4/3.
    As such, I think you are not asking the right question and thus, confusing yourself with the answer you want to hear.

    3. Barrel has nothing to do with it - I'm not even sure what you mean by "barrel". If you mean the physical size, then I would personally prefer a smaller barrel for the same max aperture (f-stop) lens. f1.4 is f1.4, irregardless of size. However, I think what you mean is APS-C f1.4 vs m4/3 f1.4...which will be confusing.

  20. #20
    Moderator daredevil123's Avatar
    Join Date
    Oct 2005
    Location
    lil red dot
    Posts
    21,627
    Blog Entries
    1

    Default Re: Which setup will have faster shutter speed?

    Quote Originally Posted by wildcat View Post
    I can see where you are confused.

    1. Yes, it is true that APS-C will have more light going in at f2.8 than m4/3 going in at f2.8
    However APS-C lens will have to illuminate the entire APS-C sensor, while the m4/3 will only have to illuminate the m4/3 sensor. So it is the same shutter speed at the same ISO and aperture as explained in so many of the above posts already.

    2. Now, since APS-C captures more light than m4/3 sensor, all things being equal (i.e. the sensors are the same), it would mean that there would be less noise with APS-C than M4/3.
    As such, I think you are not asking the right question and thus, confusing yourself with the answer you want to hear.

    3. Barrel has nothing to do with it - I'm not even sure what you mean by "barrel". If you mean the physical size, then I would personally prefer a smaller barrel for the same max aperture (f-stop) lens. f1.4 is f1.4, irregardless of size. However, I think what you mean is APS-C f1.4 vs m4/3 f1.4...which will be confusing.
    Thanks for the explanation bro.

    But I think point 2 about why APS-C having less noise is not totally accurate. Light collected per square unit of sensor is theoretically the same. The reason why a smaller sensor might exhibit more noise than a larger sensor has more to do with pixel density.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •