Question about Canon 24-70mm f/2.8 Lens

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Fuzzy images I just got the Canon 24-70mm L series lens and I can't seem to get sharp images when I stand further than two feet from my subject. I have tried everything, and there is still fuzziness and noise. I have lowered my ISO to 400, 200 and even 100. Nothing has worked. I am shooting in daylight, typically with my subjects beneath trees. Either my subject is blurry, the background is blown out or everything is blurry. I've tried shooting on automatic and manual. Please HELP! I spent over a thousand on this lens and my 100 dollar telephoto works better.

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Hey jjbeanwink,
This is a very nice lens, and is unlikely that your blurry images are caused by the lens. The most common cause of blurry pictures is that the shutter speed is set to low. A general rule would be your shutter speed should be at least 1/60th of a second while handholding the camera. The bigger the lens, and the higher the magnification of the subject you are using the faster the shutter speed you should use. If camera shake is the cause of your blurry pictures you could also try using a tripod. Another common cause of blurry images is subject movement, and one solution would also be setting a faster shutter speed. Another solution is using the flash to stop the action instead of the shutter speed. Of course manufacturers do occasionally make a bad product and that is why there are manufacturers’ warranties. If you just purchased this lens you could have an authorized service technician look at the lens and see if there is anything wrong with it. I these suggestions help!

Sincerely,
Allan
Go Ahead. Use Us.

Posted on May 15, 2008

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How do I set the resolution on my Canon SD850?


The instructions for changing the resolution are on page 30 of the manual.
If the pictures are fuzzy, increasing the resolution won't help. The most likely causes of fuzzy pictures are as follows
1) Focus. Check to make sure the focus is on the subject. If something else in the picture is sharp while others are not, then the camera may have focused on the wrong subject.
2) Subject motion. If moving objects are fuzzier than stationary objects then you need to use a faster shutter speed (or flash).
3) Camera motion. Just because the camera is on a tripod doesn't mean it doesn't move. One philosophy says that if a tripod is light enough to be carried then it's not sturdy enough. For a compact camera like the SD850 that likely isn't the problem. However, you can still shake the camera when you press the shutter release button. Try setting the self-timer. This allows time for the vibrations to die down before snapping the picture.
In your particular case, I think we can assume that the subject isn't moving, so #2 doesn't apply. To assure proper focus, make sure the painting is flat and perpendicular to the lens axis. If the painting is tilted relative to the camera, then different parts of it will be at different distances and the camera won't be able to keep all of it in focus.
Also, make sure the front of the lens is clean.

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I have a canon powershot sx20..looking through the view finder looks blurry,but after takingt the picture and looking on the screen the picture does NOT look blurry...It's only blurry when looking through...


Your camera is equipped with a optical diopter that will allow you to adjust the optics in the viewfinder to your eye. meaning bringing everything into focus as it should. The way I use this (set it) is to let the camera auto focus on a subject and then turn the diopter until I see the subject clearly.
It really helps if the subject is about 12 feet away (get it real sharp) and the camera is mounted on a tripod. Once set I put a little dot of paper white out on the diopter adjustment knob so if it gets turned I know and can quickly return it to the correct spot. I'm including a diagram where this adjustment knob is on your camera, have fun.

Diagram
tri3mast_221.jpg

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The distance focus ring, is it supposed to turn all the way to the macro symbol when you are focusing on a subject that is very close?


If you're right "on top" of the subject - then, yes - it should indicate "macro". Macro focusing is for "very up close" photography and is exactly as you describe. You simply physically move the camera a little closer to or further from the subject to focus.

Not all lenses are capable of macro focusing. The vast majority of these non-macro lenses are required to be at least a couple (or more) feet away to focus. Macro lenses on the other hand can usually get just inches away - which is a great capability.

Enjoy your macro lens!

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1 Answer

With my Canon EOS digital rebel xti i have the


I think it got exposure problem so need to adjsuted exposure and shutter speed or need to replace either top cover or finder unit i recommend to repaire with canon authorised centrre only.

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I bought a Canon XSI for christmas. I owned a Rebel and have a 70-300mm IS USM lens which has been working ok. On the XSI all photos are blurry. My 28-135 lens works ok on the XSI.What could cause this...


Good Afternoon,
if I'm to understand your problem when you transferred the 28 to 135 lands from your rebel to your new XSI you began getting out of focus pictures.First make sure that your diopter is set properly on the camera to do this remove the lens turn the camera meter on and adjust your rear diopter control so that all the numbers in the finder are sharp to you then replace the lens. Next I would test the quality of the autofocus system. To do this place a magazine page with large bold lettering flat against the wall. Then aim the camera at this page at a 45° angle using just the center focus point.select a word on that page. Make sure your camera is in the AV mode with no flash and set your f-stop to 4.5. When you take this image you're going to look at it on the computer what you should see is the focus point that you used should be very sharp everything trailing off the backside of that focus point should be fuzzy and everything to the front side of that focus point should be fuzzy.If you find the image is sharper to the front side of your focus point you're getting what they call front focusing. If your image is sharper to the backside of your focus point you're getting what they call rear focusing. These issues can be addressed usually in the software set up on the camera. Again to recap you'll need a flat piece of artwork that you can put on the wall you need to position your camera 45° from that artwork set your f-stop to wide-open centerpoint focus only. I would be more than happy to answer any further questions directly contact me@Dave@advancecamera.com

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2 Answers

The flash and picture are out of sync.


If your flash has worked properly in the past, the camera may need to be serviced. If your subject is within 6 - 8 feet and is not being properly illuminated, something needs to be adjusted or replaced.

By specification, your flash will only adequately illuminate subjects out to 14 feet (wide angle) or 10 feet (telephoto). If you're trying to shoot subjects further away than that, the flash is not bright enough.

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1 Answer

Does not focus after "far" objects when zoomed to 50mm or more ...


  1. If your images suddenly start looking blurry or distorted, try holding your camera up to the light. If your lens looks dirty, foggy or greasy, try applying lens solution with a lint-free cloth . Move the cloth in a circular motion until the lens dries. Do not apply lens-cleaning solution directly to the lens.
  2. If your images are still blurry, check your shooting mode. If you are shooting closeups, make sure you are using the "closeup" mode. Try to get within 2 feet of your subject before you shoot the picture. images can look more blurry when you are a long way from your subject
hope this helps you please do me rate on this issue

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1 Answer

How do you use the manual focus feature. My friend just bought a new one and is having trouble with this part of the lens. I have one for my canon and there is a setting for it


Set either the camera or lens (or both) to manual focus. Most Nikon cameras have the focus selector switch on the front, under the lens release button.

Look through the viewfinder and turn the focus ring until the image (or at least the subject) appears sharp. A green light will light up when the camera thinks the subject under the currently selected focus sensor is sharp.

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1 Answer

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If you mean you tried the sharpness setting in the driver it will not help if the image is out of focus.

On many webcams there is a focus ring around the lens, try turning that to get a focus setting that gives a sharp image at the distance you use. If the product pic shown with your question represents your cam, it looks like it has such a focus ring.

Good luck!

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1 Answer

Diopter adjustment and viewfinder problem


Hi
I would not attempt to open the camera for any sort of fix. It has weather seals in place and would recommend sending it in to Canon. If you have any warranties left it would void these. Lastly this is a high proformance bit of kit and you want to get is seen to by an Authourised Canon Dealer.

As for the diopter adustment. To be able to see through the view finder and see your subject clearly, take of the lens cap aim the camera and turn the little dial until the screen inside the viewfinder is clear it should not be fuzzy. You are only looking at the screen/gring and not the image beyond. This does not affect your image but does effect how clearly you see your subject through the viewfinder.

Hope this helps

Regards

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