Question about Canon EF 100-400mm f/4.5-5.6 IS USM Lens

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Hi when using my cannon 100-400 lense some bits of black material appeared on the lense barrel since this has happened the operation of the zoom seems rough when the friction ring is tightend even slightly thanks David

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

cammedic
  • 667 Answers

SOURCE: Broken ring around 75-300 zoom lense

Hi Pamela,

You can order directly from Canon USA,

Canon's info: To order an internal replacement part, please call 1-800-828-4040. The hours of operation are 9:00 A.M. to 8:00 P.M. EST from Monday to Friday. When calling, speak the term "order parts" when the speech routing system asks the reason for your call. You will immediately be routed to the Parts Desk for assistance.

Posted on Jan 30, 2008

koraypek
  • 6 Answers

SOURCE: Lense on Cannon sureshot

Not really, zoom lenses are pretty fragile and will permanently be damaged when they get a shock. Most probably the guide rails/pins are damaged inside, and it will need luck and patience to glue them in place (and most of the times glue isn't strong enough to keep them together).

Better sell it for parts on ebay and get yourself a new one (most of the times broken fetch half price of used ones). People need different parts (i.e., the mount, motors, aperture assembly), and it is environmentally great to recycle goods for reuse by other repairers...

K.

Posted on Sep 21, 2008

  • 20 Answers

SOURCE: Cannon lenses

All canon EF lenses (and compatibles e.g. Sigma EX) can be used with both analog and digital  EOS-bodies. Depending on the sensor size (usually smaller than a 35 mm negative) a crop-factor due to the smaller field of view must be considered.  Example: Canon EF 50mm/1.8 lens used on a digital EOS (40D, crop factor 1.6) equals a 80mm lens (50mm x 1.6) compared to analog cameras using 35mm film. Some digital EOS-models can also use EF-S lens-series.

Posted on Nov 28, 2008

SOURCE: EF 24-70 lens droop...

The zoom creep is an easy fix for Canon. I really do not recommend trying to tighten it yourself, since that would void your warranty.
It is usually free to tighten the zoom ring.
/Chris

Posted on Jan 19, 2009

  • 102366 Answers

SOURCE: My question is about a Quantaray 75mm-300mm

Slide a piece of paper partway under the ring (make sure you leave enough hanging out so you can remove it later) and see if that tightens the action some.

Another low-tech approach is to push the ring to expose the inner barrel, then attack one or more pieces of Scotch tape or masking tape.

Posted on Feb 05, 2010

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1 Answer

Why am I getting pictures with curved edges edges


Hi Ian
What you are suffering is something called barrel distortion which causes images to appear spherised or "inflated". Barrel distortion is associated with wide angle lenses and typically occurs at the wide end of a zoom lens. The use of converters often amplifies the effect. It is most visible in images with perfectly straight lines, especially when they are close to the edge of the image frame

the way to solve it is to try not use the end of the of the zoom of your lens. Above 20 mm you should be fine. If this is not possible then you can correct the effect in programmes like Photoshop

Hope this helps

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Very loose lens 75-300mm canon zoom


If it is loose on the camera mount, try to avoid using it. If it causes your camera mount to distort, then you won't have much luck with any other lenses!
If it is "loose" meaning: it rattles and there's a bit of play in the 'barrel'...yuuup - get used to it. She's an oldie but a goodie.

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1 Answer

PANASONIC DMC-FH24


I've had this happen on two cameras. One was dropped while the barrel was out, the other I'm thinking had some sand/grit between the barrels. Find a very small eye glass screw driver (flat head). When you turn the camera on and you can see the barrels trying to open, slip that little screw driver in the outer most barrel opening, just a little bit, and pry up. Sounds crazy, I know. But it worked for me on two separate cameras. Once you get the lens to pop out and stay out, zoom the les out as far as it goes. Using just the tip of your index finger, tap all the way around the barrels, making sure you circle each one of them. This is allowing the sand/grit/lint or whatever it is that is stuck, to come free. I also used a can of compressed air and shot it at the barrels from a 90 degree angle. Don't shoot it at the barrel head on because you may blow grit further back into the barrel. Just keep doing these steps repeatedly. If you actually get your barrel to open, put the camera next to your ear while zooming in and out. You might be able to hear the grit while the lens is zooming in and out. The first camera I did this to, was two years ago. I've shot probably 1000 photos with it since without any problems. Hope this works and if so, you may want to be a little more careful of sand/pockets with lint/camera cases with lint, etc.....

Mar 17, 2012 | Cameras

1 Answer

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I had this problem with my Fujifilm E900 under warranty, and Fuji replaced the zoom mechanism. Nine months later, this past weekend, the same problem occurred. I appear to have solved it by gently but persistently wiggling the lens into a fully zoomed-out position, applying silicone spray to the lens barrel such that some of it dripped down into the space between the lens and the camera body and between the two parts of the lens barrel, and then repeatedly turning the camera on and off, wiggling the lens barrel, until it began to move freely again. Then I zoomed in and out until the silicone spray appeared to be dry. So far, I've tried zooming it in and out about 50 times in a row, with no problems.

The clue, to me, that this might work is that the spray initially seeme to make the problem worse. That meant it was getting to the gear mechanism. Once the solvent part of the spray dried, it wall worked smoothly.

Aug 17, 2009 | Fuji FinePix A350 Digital Camera

1 Answer

Friction in zoom, Sigma AF 70-300mm for Canon-EOS


Its more like a distorted inner zoom barrel or sand and dirt inside  the inner barrel will need to be replaced or you need to dismantle and clean out 

Nov 09, 2008 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

My question is about a Quantaray 75mm-300mm


Slide a piece of paper partway under the ring (make sure you leave enough hanging out so you can remove it later) and see if that tightens the action some.

Another low-tech approach is to push the ring to expose the inner barrel, then attack one or more pieces of Scotch tape or masking tape.

Jul 30, 2008 | Quantaray 28-200MM F3.8-5.6 Lens for Canon...

1 Answer

When I turn on my Camera, the screen turns blue and say Zoom Error in red writting, and it wont turn on, and the shutter will not shut!


This happens du to friction in the movement of the lense assembly. Did you happen to drop it in sand or on hard surface. If the camera if exposed to sand, just the cleaning of the lense assembly,( gears and the barrels) will solve the problem. But, if any damage is there then the complete lense unit needs replacement.

Jul 17, 2008 | Olympus Cameras

1 Answer

Quantaray 28-200mm Aspherical IF


If I read this right, your lens is a 28 to 200mm zoom lens with aperture of f:3.5 - f:5.6. What this means is that at 28mm it has a maximum aperture of f:3.5. When you zoom out to 200mm, the maximum aperture is now f:5.6. This is perfectly normal for a zoom lens of this type.

Typical situation in Shutter preferred mode. I have the shutter set at 1/125 of a second and the f:stop is f:3.5. When I zoom out to 200mm, the shutter speed is still 1/125 of a second, but the f:stop is now f:5.6 and I have decreased exposure (darkened the picture) by almost 2 full f: stops.

Realizing this, I think that "turning off the camera" really isn't a fix. The problem is realizing that the aperture will change as the focal length of the lens changes (as you ZOOM in or out on your subject). Try the aperture preferred mode and you should note that the shutter speed will change as you zoom in and out.

Most important, pay attention to shutter and f:stop info in your viewfinder. FYI : Zoom lenses that hold aperture at all ranges cost several thousand dollars, and canon makes them - they weigh a ton.

May 29, 2008 | Quantaray 28-200MM F3.8-5.6 Lens for Canon...

1 Answer

Cannon zoom sd870


hi have you tried removing the battery for couple of hours so it can reset any settings that need to be set back to default it only resets camera memory not settings you have changed but this can sometimes solve the problem your having.

Also when you switch camera on and then press zoom when the camera switches off does the lense go back inside the camera as normal or does it reamin out.

when you switch in on do all the other buttons work like can you take picture and can you access all the menu if you can then take it off auto if its on auto then see if this let you use zoom if not then the chances are their is a fault on the zoom button either jammed could be that the lense motor has come out of line with zoom button, is the display clear when you go to take picture without adjusting the zoom is it still possible to take pictures

Apr 09, 2008 | Cameras

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