Light through the eyepiece? - DPChallenge Forums

Canon EF-S 18-55mm f/3.5-5.6 IS

04/27/2006 11:28:33 PM · #1

Ok... reading the manual that comes with a Canon lens/camera (they all say it) and I get to the part where it says:
If your eye will not be covering the eyepiece when the picture is taken (with remote/timer, etc), use the eyepiece shutter or eyepiece cover. This prevents stray light from entering the eyepiece and trowing off the proper exposure.

Ya kidding me?? Really? Is there enough light entering through the eyepiece to throw the exposure off?

Konador

Canon EOS-500D Rebel T1i

04/27/2006 11:31:58 PM · #2

I've never noticed anything. I never use the cover. Probably only noticeable on 4 hour exposures for astro-photography or something.

Brad

Olympus OM-D E-M1

Olympus 40-150mm f/2.8 PRO M.Zuiko

04/27/2006 11:34:15 PM · #3

Yup.
Try a long night exposure, one covering it with the rubber piece on the strap, then one without, and on the one without, flick a cigarette lighter behind the camera a couple inches away from the eyepiece.

Aks me how I know.
:D

Message edited by author 2006-04-27 23:35:02.

Olympus 40-150mm f/2.8 PRO M.Zuiko

04/27/2006 11:35:37 PM · #4

Originally posted by BradP:

LOL you say that like you know first hand, Brad.....

Brad

Olympus OM-D E-M1

04/27/2006 11:36:34 PM · #5

:D
*cough*

Canon EF 70-200mm f/2.8L IS USM

04/27/2006 11:39:09 PM · #6

lol guess I'm just surprised that it can make any difference at all in any but a looooooooooooong dark exposure. Its a small aperture and facing away from the large lens opening and sensor

Dan_Cottle

Canon EOS-350D Rebel XT

Canon EF 50mm f/1.8 II

04/27/2006 11:39:28 PM · #7

I dont belive that enough enters to do anything significant because I have shot with the lens cap on at iso 1600 in brightish light for a 2 minute exposure and the picture was still completly black other than the hot pixels

owen

Canon EOS-40D

04/27/2006 11:39:36 PM · #8

I used to get a white spot all the time on a Canon film SLR when shooting remote. Probably with the sun directly behind it. We used to cover the view finder with tape. Haven't seen the same thing with this 350D though and I never think to use the cover.

Brad

Olympus OM-D E-M1

Olympus 40-150mm f/2.8 PRO M.Zuiko

04/27/2006 11:48:01 PM · #9

It took me a minute to figure out what had happened when I was playing with some long exposure shots one night. One shot had a light hazy kinda' fog on one side. It dawned on me that I lit up a smoke behind the camera while taking that shot. Since then, I cover it, even if that was probably a fluke.
Had I not dumped that shot, I could have sold it to the National Enquirer and said it was an apparition.
lol