p.1 #1 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
Hi there,
I'm new here
Have been searching for this topic on the forum, but couldn't find any.
Is there anyone here using EF 24mm f/2.8 on a 5D Mark II?
I recently purchased a second hand copy of this lens (just barely one month old). The guy who sold it said he found it rather not so useful on his cropper body. And i got it approximately $50 less from the new one.
Anyway, the lens is great, decent focusing speed, and very sharp wide open. Didn't find any flaw on it's performance and shot result despite a bit noisy AF (which is normal for non USM lens).
Until i noticed that on my 5D mk II's viewfinder, the lens showing me this, how do i describe this.. a very thin circle border on the center. Almost 40% of the viewfinder. And the area outside of the circle is a bit dark compared with the center. Almost like a vignetting but clearly making a perfect thin circle border. Boy, i wish i could show you what i mean.
This remind me of my 58mm Helios lens on my old Zenith SLR camera. It also has the same thin circle on the center of the viewfinder. But i think it's obvious to have it there for manual split focusing.
I hope this is normal on Canon EF old design lenses like this one. FYI it was announced by canon on 1988. Among the first EF lenses introduced during early Canon's EF mount era.
Would appreciate any info about this, sorry for the long writing
Thanks.
p.1 #4 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
haidoz wrote:
...Any thoughts?
Nope. I've used the 24/2.8 on many EOS bodies (not the 5DII), and I haven't seen what you describe. Of course, as long as it doesn't appear in the photos, it's not so bad, eh?
p.1 #6 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
jcolwell wrote:
Nope. I've used the 24/2.8 on many EOS bodies (not the 5DII), and I haven't seen what you describe. Of course, as long as it doesn't appear in the photos, it's not so bad, eh?
Go Pats!
I guess so.. It's not really annoys me during focusing either. Just curious though.
JohnBrose wrote:
Does it show up in prints or on live view or just in viewfinder?
It doesn't appear on photos nor on live view. Just in viewfinder.. and doesn't seems to happen with other lenses.
Damn, couple hours ago i met my friend and his 5DII, i forgot to test the lens on it.
p.1 #9 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
I used an EF 24 2.8 for nearly 20 years. I recall on my 1N I could see a bit of light fall-off in the 100% VF but don't remember it being obvious on my 5D but the VF is less than 100%. Sold it by the time I had a 5D2.
However if the pattern doesn't show in images or LV, I'd have to say it isn't due to the lens. AFter all, the OVF is much darker and smaller and renders far less detail than the saved image file. If anything was there, it would be painfully evident in the image file. You're seeing something on your focusing screen or prism.
p.1 #11 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
Gochugogi wrote:
I used an EF 24 2.8 for nearly 20 years. I recall on my 1N I could see a bit of light fall-off in the 100% VF but don't remember it being obvious on my 5D but the VF is less than 100%. Sold it by the time I had a 5D2.
However if the pattern doesn't show in images or LV, I'd have to say it isn't due to the lens. AFter all, the OVF is much darker and smaller and renders far less detail than the saved image file. If anything was there, it would be painfully evident in the image file. You're seeing something on your focusing screen or prism....Show more →
Yeah, it should be the same on 5DII too, since it VF is 98% coverage.
True, what i'm seeing is something on the focusing screen / prism.
I tested both my 85mm f1.8 and 50mm f1.4 by viewing its rear element through my 5DII's VF without snapping-in the lenses on the camera mount. And i can some how see the similar dark circle on the VF.
So i guess it's not the 24mm lens, it's something with the 5DII's VF.
Weird thing is, i couldn't see the dark circle on the VF when i snapped-in both 85mm and 50mm on the camera mount. Only happens with the 24mm. And as far as i can remember it didn't happen too when i'm using my friend's 17-40L.
PaulB wrote:
Which focus screen is fitted in the camera?
I bought this 5DII body on a few months used condition. And i can't trace the previous owner's history on the camera since i bought it from a camera store. But i guess it is using factory standard focus screen.
p.1 #13 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
Just an outside of the box thought....Is the lens aperture FULLY opened on the body? IF it is not, and is only opening to F4, the VF would appear darker than it should, especially at the edges...
Just a guess....
p.1 #15 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
haidoz wrote:
Yes it's wide open on f2.8.
No matter i set the aperture value, the thin dark circle always there..
Setting the aperture has no effect on the view through the viewfinder....
...no matter what you set the aperture, it is supposed to always be wide open at F2.8 until you take the shot...I was thinking that if the VF was dark, there might be something keeping the aperture from staying open at 2.8....
p.1 #16 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
Have you inspected the rear element of the 24mm lens? Take it off the camera and hold it up to a light - might have some gunk or something on the rear element.
p.1 #17 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
quicksilver33 wrote:
Have you inspected the rear element of the 24mm lens? Take it off the camera and hold it up to a light - might have some gunk or something on the rear element.
p.1 #20 · Dark circle on viewfinder EF 24mm f/2.8 + 5DII
Anything unusual happen when you push the DoF preview button to stop it down to test the aperture control mechanics? If it doesn't show any effect on the images and the metering/aperture control is working fine, it remains a conundrum, but not too critical ?
?