Not very sharp,need some input
Dec 28, 2012 13:58:48 #
I have a Canon 60D and been having some problems with sharpness.The lens is Tamron 70-300mm VC anniversary model.I stored the original so You can check everything out.Standing about 45 to 50 ft away and this is as good as I can get.I even tried on a tripod and get the same results.Contacted canon today through e-mail to see what they say.If You zoom in on the photo You will see it just isn't very shard,so I can't crop to where I would like to have it be.
Focus was on the bird on the left
Dec 28, 2012 14:40:25 #
Dec 28, 2012 14:50:59 #
Dec 28, 2012 15:19:53 #
Hi Bob. Looks like it might be front focusing just a little. That shot would be tough for any camera with that back ground. I cropped it to show you the branch on the left side. It looks pretty good. But the bird isn't off by much. Does your Editor have a loupe you can use? Also can you add a little sharpness in the camera for this lens?
Erv
Erv
Dec 28, 2012 15:42:37 #
Don't know if editor has loupe or not ,don't know what it is for if it does lol,not to much good at using editor's yet.I do have photoshop lightroom 3.6 haven't got the hang of it yet tho will have to check the my camera as far as sharpness adjustment.I checked the focus screen and it seems to be seated properly.I thought about the background to, there is a lot of snow around.Still can't understand why it seems to look like a lot of noise through the view finder,guess canon will let Me know on that if there is a problem.When We get a sunny day around here I will go out and try some different shots.As long as I don't zoom very far out the shots look great.
Dec 28, 2012 15:57:17 #
Dec 28, 2012 16:22:23 #
Ya i even get it with the 55-250 canon lens.as long as i zoom out ,it seems to be more noticeable pass 70mm,then it really looks nasty.It actually looks like a picture with a lot of noise in it.little tiny spots all over it through the view finder.
Dec 28, 2012 18:14:12 #
Do you turn off the VC when using a tripod? I also agree it looks like there might be some front focusing going on. Here is a link to another site that does a good job of explaining front/rear focus and a good way to check your lens.
http://cameralightlens.com/newsblog/?p=264
http://cameralightlens.com/newsblog/?p=264
Dec 28, 2012 19:14:16 #
YA, turned off the VC on the camera and used 2 second timer with the same results.I even used the 10 second timer.I will try the test with the batteries,looks like a good and easy way to check.
Dec 28, 2012 19:20:05 #
ya i can see what you are saying Erv,it could be front focusing .I am hoping we get some sunshine around here one day and try again to see if mabe it was the background.
Dec 28, 2012 20:53:51 #
We had a little today and almost some blue sky.:) Playing cards work pretty good for the focus test too. I use 7. 3 on each side of the center one. I just use forks from the kitchen to hold them up. :) This works good to play with your DOF too. On these cold gray days. I am always playing the something. Right now I am trying to figure out how to use my flashes and do portraitures with them. But I think I have to make up some kind of defuser. My little studio is to small for a lot of light bouncing around.:)
Erv
Erv
Dec 28, 2012 20:54:05 #
if you have an IS on the lens you might try turning it off when it is on the tripod. that may help.
Dec 28, 2012 23:18:02 #
well A tripod helps but what mode is the camera in- what f stop do you have and whats the shutter speed?
Dec 29, 2012 06:38:33 #
Bob, I have the same lens and body. From the EXIF data, you might try going to a higher 'f' setting (tighter opening) and you then slow the shutter down from the 1/800 sec to about 1/250 sec, as long as the birds are not moving (much). Also noticed that it shows you had the 70-300 all the way out to the 300 end (showing 500 mm focal length [300 * 1.6=480mm]) where the Tammy is in fact, a little soft. You might try bringing it off the 300 mm stop a few feet, to about 280 mm or so. And last, the sun would improve the color and edges of the birds, much better than that snowy sky that you have on this shot.
One post note.... The small stature of the nuthatch you are shooting does not help your issue. If you can, shoot it closer, they are not that shy, as long as there is food nearby. Possibly, if you have a remote trigger, you can set the tripod closer. They tend to grab a seed, go back to nearly the same spot to eat, time after time. Watch them.
One post note.... The small stature of the nuthatch you are shooting does not help your issue. If you can, shoot it closer, they are not that shy, as long as there is food nearby. Possibly, if you have a remote trigger, you can set the tripod closer. They tend to grab a seed, go back to nearly the same spot to eat, time after time. Watch them.
Dec 29, 2012 07:29:20 #
RCBlank wrote:
using spot focus,i also tried center weighted.
Centre weighted is an exposure metering mode, not an auto-focus mode. Spot metering is also not an AF mode.
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