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d90 eyepiece cover

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bannock

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Hi,

has anybody come up with a practical solution to cover the eyepiece? ( despite buying a D300 :-) I always find it annoying to detach the rubber piece and mount that flimsy cover, especially in the dark and cold. I´ve lost/ broke 2 of them within a year.
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Cheers,Mike
 
Don't take long exposures from a tripod. Always keep your eye to the viewfinder. Seriously, I actually don't miss it but almost never take these kinds of photos. I have a time or two just draped something over the top of the prism to cover the eyepiece when I thought it might be a problem. What particular situation do you have problems with?
 
Make a thumb-glove from an old lens cloth and use that thumb to cover the viewfinder. Also helps to clean the LCD display if you transfer sweat/oil to it.
 
@ Ral

When you are shooting in Live View, with a bright light at your back, the exposure changes unless you shoot manual. I also like doing long exposure shots of coastal scenes at dusk or by using strong ND filters to get that misty effect on water. Even in manual mode stray light from the eyepiece seems to affect the picture.
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Cheers,Mike
 
I don't use live view, so wouldn't have any experience with it, but where is the metering sensor located that it would be affected by light through the viewfinder in live view. The mirror is up, so light cannot get from the viewfinder to the area where the image is projected on the sensor. If the metering was done in the prism of viewfinder, it could not work in live view as the light cannot reach the prism area with the mirror up. Just seems like light through the viewfinder couldn't affect exposure in live view. But I've been wrong before and as I mentioned, it wouldn't bother me anyway as I don't use it.
 
Yes, the metering is done before the mirror is rised for the live view.
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Harri - My blog: flatulated.blogspot.com
 
harri manni said:
Yes, the metering is done before the mirror is rised for the live view.
Click to expand...
You are right, but while using Live View you don´t have your eye at the viewfinder, so if you have strong back light the camera underexposes
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Cheers,Mike
 
ups, afterthought...

before the exposure the mirror flips down again for metering, then up again for exposure. The metering isn´t done by the sensor but by a second sensor which sits in the prism housing, afaik.
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Cheers,Mike
 
bannock said:
ups, afterthought...

before the exposure the mirror flips down again for metering, then up again for exposure. The metering isn´t done by the sensor but by a second sensor which sits in the prism housing, afaik.
Click to expand...
Yep, this is exactly right.

But Mike, your earlier comment was wrong -- the light entering the viewfinder does not effect the actual image, only the light metering. I just tested this myself with a bright flashlight shining directly into the viewfinder.

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http://www.benseese.com
 
Ben Seese said:
But Mike, your earlier comment was wrong -- the light entering the viewfinder does not effect the actual image, only the light metering. I just tested this myself with a bright flashlight shining directly into the viewfinder.
Click to expand...
It won't effect short exposures. However there is the possibility that light will slowly leak through gaps in the mirror's light seal during a long bulb shot. That's mainly why even dSLRs without a live view feature usually include a cap (or internal shutter).
 
Plothole said:
Ben Seese said:
But Mike, your earlier comment was wrong -- the light entering the viewfinder does not effect the actual image, only the light metering. I just tested this myself with a bright flashlight shining directly into the viewfinder.
Click to expand...
It won't effect short exposures. However there is the possibility that light will slowly leak through gaps in the mirror's light seal during a long bulb shot.
Click to expand...
Well, obviously. Do you think I tested it by shooting a 1/500 sec exposure?

Note though, it's not the shutterspeed itself that would inherently cause a leak to be visible -- it's dark subject matter. And compared to the 30-watt light I held up against my viewfinder, my subject was extremely dark (office wall lit only by computer monitor from 15 feet away, darkened further by f/11 aperture).
Plothole said:
That's mainly why even dSLRs without a live view feature usually include a cap (or internal shutter).
Click to expand...
Creative logic, but I disagree. The light meter will be flooded by light coming through the viewfinder whether or not you have Live View. People have had reasons to trip their shutters without their faces against their cameras for eons.

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http://www.benseese.com
 
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