Dark Shadows?

I just started shooting at some wide angles and noticed im getting dark shadows from my lens hood. After removing the hood I seem to still get shadows at 24mm? Is this just a result of the camera angle when focusing, or a possible issue? Im using my tamron 24-70 at 24mm

I think you may be referring to vignetting which is dark corners around the edges of the frame. This typically increases the wider you go. It can easily be removed in post processing.


http://en.wikipedia.or​g/wiki/Vignetting

It would help to show a sample, some vignetting is natural, but if its too strong it might be an indicator of a problem.

nqjudo wrote in post #17585308
It can easily be removed in post processing.

I would say alleviated rather than removed, because you potentially get more noise in the affected areas, since they're less exposed.

Vignetting may be more or less visible depending on what you point the camera at, a flat sky or wall will really exaggerate the effect, even on lenses that don't have a lot of it.

Reviews of the Tamron 24-70 show that it has over 3 stops of vignetting at 24mm, which is quite a lot.

If you're getting vignetting on a crop body like the 60D in your sig., with a lens designed for a FF camera (the Tamron 24-70), there's something drastically wrong with the lens.

Would it still be vignetting the shadow shows on the bottom of the frame, not the corners? Let me snap a few, ive cropped it out of some other photos already

Its a bit off center, had to crop out some personal stuff, but this is slightly tilted down with a very dark shadow right in the center of the image

Bracetty wrote in post #17585382
Its a bit off center, had to crop out some personal stuff, but this is slightly tilted down with a very dark shadow right in the center of the image

Hosted photo: posted by Bracetty in
./showthread.php?p=175​85382&i=i67408455
forum: Canon Lenses

That's... not vignetting. Hopefully someone can tell you what's actually wrong.

I have seen that when using the built-in flash and a zoom lens extended.

Exactly! Your flash is too close to the camera, so the lens casts a shadow on your subject. With shorter lenses, it won't be a problem because they don't get in the way of the flash; with longer focal lengths, it won't be (as much of) a problem because they don't cover as wide an angle, so they don't "see" the shadow.

Oh you have gotta be kidding me, that's obviously a shadow being cast from the lens. I haven't used camera flash, let alone built-in flash for many years, so I forget all about this.

Yes I forgot to mention, my built in flash was activated. So pretty much as long as theres a built in flash, this conflict will cause the shadow? Is this just a crop body problem+lens problem, like will this occur with all wide angles on this body if the built in flash is activated? Just wondering if the solution in this case is off camera flash, a different lens, etc. I will be going to FF soon and I don't want to buy the "wrong" gear leading up to the transition, just looking for the right deal on a 6D

it doesn't happen on FF, because they don't have a built in flash ...if you're planning to go to FF, and you use a flash already, it's definitely a good idea to get an external flash now

but to totally answer your question, yes it will happen with just about every wide, big lens, and the built in flash

Man, I thought somebody was doing a take-off of the old vampire series...

Ed

DreDaze wrote in post #17585411
it doesn't happen on FF, because they don't have a built in flash ...if you're planning to go to FF, and you use a flash already, it's definitely a good idea to get an external flash now

but to totally answer your question, yes it will happen with just about every wide, big lens, and the built in flash

Another factor in the circumstances is if you are really close to your subject. If your subject is a fair way from the camera that shadow would be out of the frame. In face even with a hot shoe mounted flash you could get that issue on a FF camera if you are close enough to the subject.