Out of focus
Jun 4, 2015 13:37:16 #
donroe
Loc: Lexington ky
I have a Tamron 150-600mm and a Canon 70D. Anything over 500mm will not come out focused I've tried tripod, high shutter speed, and have sent it to tamron twice and they say there is not a problem with it. What else can I do?
Any thing under 500 is fine
Any thing under 500 is fine
Jun 4, 2015 13:49:20 #
Just a quick thought. Try to manual focus on a static object at full zoom in live view. If you can get a sharp image that way then you know the lens is ok. And then you have to figure out what the problem is with the camera. Maybe you need to do some micro adjustment to line the lens up with the camera. I am sure there will be some Canon users commenting and helping you more with this. But try the manual focus test first.
And try also to use higher aperture number, f8 or higher. The lens may be soft at widest aperture.
And try also to use higher aperture number, f8 or higher. The lens may be soft at widest aperture.
Jun 4, 2015 13:52:44 #
donroe wrote:
I have a Tamron 150-600mm and a Canon 70D. Anything over 500mm will not come out focused I've tried tripod, high shutter speed, and have sent it to tamron twice and they say there is not a problem with it. What else can I do?
Any thing under 500 is fine
Any thing under 500 is fine
that shot at 250 is way out of focus.
Just for kicks and giggles, crank in a lens tuning offset each way and try it again at 600mm.
Jun 4, 2015 13:55:33 #
Maybe it's just me, but I see quite a bit of motion blur @600mm.
The fence is more in focus on the right side @250mm.
I suspect that nothing is wrong with the lens.
The fence is more in focus on the right side @250mm.
I suspect that nothing is wrong with the lens.
Jun 4, 2015 13:57:03 #
On quick examination your 250 mm shot is more soft on the left than the right. The left shows what looks like a double image but the right side seems to be just a single image. Unfortunately, you or your program has stripped out all exif data so no one has any idea of the possible underlying reasons. With out further information I can not proceed. Sorry.
Just a thought... do you have the IS/VC turned on while on the tripod? This can cause the problem but we have no way to verify.
Just a thought... do you have the IS/VC turned on while on the tripod? This can cause the problem but we have no way to verify.
Jun 4, 2015 14:08:34 #
Both show significant motion blur.
Try to keep your shutter speed above the reciprocal of the effective focal length of the lens. At 600mm your minimum shutter speed would be 1/1000 sec, and at 250mm it would be 1/400 sec.
In the second shot the fence to the right of the bird is sharper than at the bird.
You may need to adjust the focus in camera to compensate.
It is not difficult, it just takes some time, less than sending the lens out though :-)
Good luck and keep us posted, I'd like to hear (see) you get it solved!
:-)
GT
Try to keep your shutter speed above the reciprocal of the effective focal length of the lens. At 600mm your minimum shutter speed would be 1/1000 sec, and at 250mm it would be 1/400 sec.
In the second shot the fence to the right of the bird is sharper than at the bird.
You may need to adjust the focus in camera to compensate.
It is not difficult, it just takes some time, less than sending the lens out though :-)
Good luck and keep us posted, I'd like to hear (see) you get it solved!
:-)
GT
donroe wrote:
I have a Tamron 150-600mm and a Canon 70D. Anything over 500mm will not come out focused I've tried tripod, high shutter speed, and have sent it to tamron twice and they say there is not a problem with it. What else can I do?
Any thing under 500 is fine
Any thing under 500 is fine
Jun 4, 2015 14:10:35 #
Are you using "spot" focus or letting the camera pick the focus point?? If the latter you don't really know where it focused when you take the shot, and especially with birds, you don't have time to fuss with the focus point. It (the camera) usually picks the largest item in its field of view.
Jun 4, 2015 14:15:24 #
donroe wrote:
I have a Tamron 150-600mm and a Canon 70D. Anything over 500mm will not come out focused I've tried tripod, high shutter speed, and have sent it to tamron twice and they say there is not a problem with it. What else can I do?
Any thing under 500 is fine
Any thing under 500 is fine
I'm casting my vote with the motion blur folks on both of the images. It seems that the motion is at 45 degrees from bottom right to upper left, for orientation.
--Bob
Jun 4, 2015 14:20:47 #
oldtigger wrote:
that shot at 250 is way out of focus.
Just for kicks and giggles, crank in a lens tuning offset each way and try it again at 600mm.
Just for kicks and giggles, crank in a lens tuning offset each way and try it again at 600mm.
Old Tigger is right - there is a depth of field focus issue at 250mm and f/5. The bird's head is in better focus, but his body is not. Higher settings like f/8 or f/11 might have produced better results.
Jun 4, 2015 14:42:49 #
Does the bird only have 1 foot? He's standing on one leg in both pix.
Good luck on your gocus issues, too.
Good luck on your gocus issues, too.
Jun 4, 2015 14:56:02 #
Jun 4, 2015 16:57:08 #
There is a learning curve with long lenses. I might suggest looking at Moose Peterson's website. He has some very good tips for using long lenses.
Jun 4, 2015 19:04:05 #
rmalarz wrote:
I'm casting my vote with the motion blur folks on both of the images. It seems that the motion is at 45 degrees from bottom right to upper left, for orientation.
--Bob
--Bob
I agree. Blow up the first image. Fence wires clearly indicate motion.
They are double in one direction and not in the other.
If it was on a tripod as indicated it might be the image stabilization messing up as it does with cameras on tripods.
Jun 4, 2015 19:09:04 #
donroe wrote:
I have a Tamron 150-600mm and a Canon 70D. Anything over 500mm will not come out focused I've tried tripod, high shutter speed, and have sent it to tamron twice and they say there is not a problem with it. What else can I do?
Any thing under 500 is fine
Any thing under 500 is fine
The 150-600 Lenses are both (Tamron & Sigma) known to have problems with Canon Camera.
My Tamron on my Nikon D600 & D800E are tack sharp all the way to 600mm at f/8
Craig
Jun 5, 2015 05:54:58 #
donroe wrote:
I have a Tamron 150-600mm and a Canon 70D. Anything over 500mm will not come out focused I've tried tripod, high shutter speed, and have sent it to tamron twice and they say there is not a problem with it. What else can I do?
Any thing under 500 is fine
Any thing under 500 is fine
I'll bet you are trying to use a cheap tripod and head. At 600mm with your camera's crop factor you have the same angle of view of a 960mm lens. Only a top of the line tripod from Really Right Stuff, Induro, Gitzo, and a corresponding gimbal head will hold that steady enough to minimize movement - which is the cause of your troubles. You still have movement at 250mm.
You should avoid using a shutter speed below 1/500 at 250mm, and below 1/1500 at 600mm. And go cold turkey on coffee, tea, energy drinks, and soda. Moose Peterson is a good source on you tube for long lens technique. Really Right Stuff has a great three part article on tripod selection, and it completely dispels the Zombie Myth that load capacity as a predictor for tripod stability.
That $300 or cheaper tripod ain't cuttin' the mustard.
Stop blaming the camera or the lens - your issues are stability and technique.
Buy, borrow or rent a good tripod and post the results. If you have to use higher ISOs to get faster shutter speeds, that's ok.
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