Canon 50mm 1.4: Creating a dark stripe on some of my photographs.

And my 50mm 1.4 woes continue. (Here's a link to my CA problem: *Link*)

These photographs are taken straight out of the camera. (They have only been resized and/or cropped.) Clearly, there is a problem, but it seems to be intermittent.

Oh, and here's a Flickr discussion about this very same issue. It seems to me like the problem remains unsolved. *Head-Desk*
*Flickr Link*

First Example

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HTTP response: NOT FOUND | MIME changed to 'image/jpeg'

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Looks like a failing shutter to me.

Invertalon wrote in post #14738323
Looks like a failing shutter to me.

My 60D is two weeks old...

Invertalon wrote in post #14738323
Looks like a failing shutter to me.

Me too, although it's not quite typical as it is showing in a "slow" shot, but not in a "quick" one, contrary to expectation, but the failure may just be intermittent at the moment.

Try some at 1/4000 s or 1/8000 s if your camera does that, and some at 1/60 s. If the fault shows in the first set, but not the second, it's the shutter.

An outside possibility could be a floppy mirror, perhaps. Others will be ble to elaborate on whether this is sensible or not.

I firmly believe it *isn't* the shutter.

I just shot my light bulb at extremely close range with a 1/8000th shutter speed. No dark stripe.

Were you using a flash?

I'm very tempted to call Canon tomorrow and absolutely *demand* a refund on this lens, even though I'm past their 14 day return policy on refurbished items. (Which, in and of itself, is a joke.)
I do feel bad about blowing up like this on such a wonderful forum, but my anger and frustration are getting the best of me tonight. I've honestly never owned a lens this bad in my life.

Judsonzhao wrote in post #14738369
Were you using a flash?

No flash.

Take some pictures with another lens at similar shutter speeds to those with the black stripe.

whmeltonjr wrote in post #14738386
Take some pictures with another lens at similar shutter speeds to those with the black stripe.

That will have to wait until tomorrow. However, I'm confident that my other lenses will perform flawlessly.

TheRightLight wrote in post #14738391
That will have to wait until tomorrow. However, I'm confident that my other lenses will perform flawlessly.

Are you taking odds on that?

I can't conceive of any plausible way that a faulty lens can give the effect that you are seeing, but I'm always open to fresh ideas.

I think you've got a faulty body, either the shutter or bouncy mirror. Be it two weeks or two years old, for me you need to get the camera looked at. Lens aberrations/faults don't show straight lines like that however much you are convinced it's the lens.

Sir_Loin wrote in post #14738446
I think you've got a faulty body, either the shutter or bouncy mirror. Be it two weeks or two years old, for me you need to get the camera looked at. Lens aberrations/faults don't show straight lines like that however much you are convinced it's the lens.

I can't be certain of anything. However, I feel it isn't the body because my other shots taken with different lenses fail to exhibit the issue.
In my opinion, this is a flare-related problem pertaining to this P.O.S. lens.

Granted, if the 60D is causing this issue, that's almost a good thing. Why? Because I can still return it to Amazon for a full-refund if it's defective. (It's actually only a week old. I was wrong with my estimate above.)

I'm pretty sure it's the body and not the lens and you can see it because of the lens' big aperture compared to your other lenses.
But that's just a guess...
PS "Only a week old" pretty much shows an "infant death" as we call it in reliability. It would be more surprising if your body failed at one year old rather than a week old.

TheRightLight wrote in post #14738474
I can't be certain of anything. However, I feel it isn't the body because my other shots taken with different lenses fail to exhibit the issue.

In my opinion, this is a flare-related problem pertaining to this P.O.S. lens.

However, if **it is** the body, that is almost a good thing. Why? Because I can still return it to Amazon for a full-refund if it is defective...

Well, we agree the 50mm f/1.4 is a P.O.S lens, not for it's image quality as it isn't that bad, but because the AF mechanism is prone to failure as its a weak design. I know, I had two fail.

Anyway, flare shows itself as circular or ringed 'hotspots' or an overall loss of contrast in the image, not straight lines as yours unless optical physics changed just lately! At least you can exchange or get a refund on your camera body as I'd put good money on it being the culprit as everyone else has said to your query. Good luck!