Question about Nikon 18-70mm f/3.5-4.5G ED-IF AF-S DX Zoom Nikkor Lens

2 Answers

The Zoom ring is stuck between 24 mm and aprox 40 mm. What can I do to fix this? Any hints would be appreciated. Charlie

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  • Charlie M Feb 18, 2008

    This sounds very interesting! Could you please provide detailed information on how to open the lens and what to do to fix the problem?
    Is it possible to get pictures showing what to do, e.g. link to a web site?

  • Charlie M Feb 18, 2008

    This sounds very interesting! Could you please provide detailed information on how to open the lens and what to do to fix the problem?
    Is it possible to get pictures showing what to do, e.g. link to a web site?

  • whitefthrs Sep 03, 2008

    The Zoom ring is stuck between 24 mm and aprox 40 mm.
    What can I do to fix this?

  • Anonymous Sep 21, 2008

    I have the same issue! Why does it get stuck there?

  • terrorsquadx Dec 28, 2008

    The same problem!

  • Anonymous Jan 02, 2009

    Yes same problem here too. When I face the lens towards the floor with no light for some reason it zooms back to 70mm. I am totally confused.

  • HariNgDuga Mar 14, 2009

    I have the same problem with my 18-70mm. It's had 2 years of use and it got this problem a week back. The zoom started jamming while I was shooting on a open field, under direct sunlight but with a cool breeze under shade.

    The jam is exactly 24-40mm(approx), and also tends to allow 70mm when tilted down. I'm using a D70s and this is it's kit lens.



  • Anonymous Mar 20, 2009

    oh God .... it's killin' me !!
    I've got the same problem exactly at 24-40 !! it really sucks !!!

  • Kevin Pettit
    Kevin Pettit May 11, 2010

    It will require taking the lens apart. Are you comfortable working with small tools?

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My lens started catching as I zoomed in and out and would not go wider than ~24mm. The problem is one or more of the screws holding the zoom mechanism comes loose and jams. Follow this link for the fix; took me ~20 min to repair (I went very slowly)! Much easier than taking it apart from the rear.

http://photo.net/nikon-camera-forum/00Pegi

Good luck...
-David

Posted on Apr 01, 2009

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There is nothing I could find for web based diagrams. The lens comes apart from the rear. The contacts have two screws holding them to the mount ring. You must free them up first before removing the mount.

It gets tricky after that. The mount has a long arm attached on the back side that extents into the lens to the aperture. It is slotted and hooks to a brass pin on the side of the aperture assembly. There is also a ground wire attached to the mount as well.

Do you wish to get into this?

Posted on Feb 19, 2008

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If you had a compact camera it would say 10x zoom what is the equivilent in a 70mm -300mm tamron


A 35-80 mm lens is 2.3X zoom. Divide 80 by 35 and you'll get the result.

It is usually better to know what the focal length of a lens in "35 mm equivalent" is and judge by that, rather than relying on the "X" power of the lens. For instance, most point and shoot cameras start at about 35 mm and have either a 3X or 4X zoom. This would make it a 35-105 or a 35-140. I've seen some that start at 28 mm, though. A 3X starting at 28 mm is 28-84 and a 4X is 28-112. Neither one is a particularly strong telephoto lens and the 4X is just about the same as the 3X that starts out at 35 mm.

It's also important to realize that tradition dictates that lens focal lengths are usually expressed in terms of "35 mm equivalent," where "35 mm" refers to a 35 mm film camera. This is because of the relation between the sensor size and the actual focal length of the lens and the resultant angle of view of the lens.

I have one point & shoot that is actually a 5.8-24 mm zoom. This is a 4X zoom. The 35 mm equivalent is 28-116 mm. The sensor is 7.2x5.3 mm. (1/1.8") (And I wish I knew someone who could explain how the heck they came up with sensor size terminology!)

I have another point & shoot that is actually a 5.7-17.1 mm zoom. This is a 3X zoom. The 35 mm equivalent is 34-102 mm. "How could a shorter focal length give a longer 35 mm equivalent?" you might ask. It's because the sensor is only about 5x4 mm. (1/2.5")

I have a few Nikon DSLR's and - thankfully - they all have the same size sensor. They all have a "lens factor" of 1.5. This means that you just multiply the actual focal length of the lens to get the 35 mm equivalent and then you can make comparisons accurately from camera-to-camera. Most Canon's, for instance, have a lens factor of 1.6. On a Nikon DSLR, a 28 mm lens is the "35 mm equivalent" of a 42 mm lens. On most Canon DSLR's, the same 28 mm lens is the equivalent of a 45 mm lens.

These example are just to show you how freaking confusing it can all become if you try to make sense of the "X" power of a zoom lens.

Bottom line...

Check the 35 mm equivalent specifications for the lens. This way, you will be leveling the field and comparing apples to apples. More or less.

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1 Answer

Hi, can tell to me why my 18-200 af vr lenss go


The "problem" is that the lens has a zoom creep issue. If you are the original purchaser, and the lens is under 5 years old, you may want to contact Nikon repair facilites in Melville or El Segundo to have it checked out.
Some users on forums have claimed that Nikon fixed the plastics ring that contribute to the zoom creep. Apparently, using a rubber band around the zoom ring will minimize the problem.
Hope this helps,
Andrew

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Hi, i was thinking of getting a leupold riflemen 4-12x40 and was wondering if i can zoom in? thanks Taylor


The 4-12 X 40 means 4 time magnification to 12 times magnification with a 40 mm objective lens.

This indicates that you can zoom from 4-12 times the unmagnified size of your subject.

Short answer - Yes!

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Zoom--mm blinking and can't change mode


Your zoom motor is probably stuck. Remove the two screws on the front side of the tiltable head. Pry off the two tilt caps using a small flat head screwdriver (they are glued on). Remove the 4 screws found under each cap. Now you can separate the two sides of the head and take out the two lenses (remember exactly how the lenses were positioned). Try pushing the flash in or out (it should move with a little force). See if the flash now responds before reassembling.

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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

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Are you sure it's the zoom ring that's stuck, and not the focus ring? The focus ring doesn't move when the camera is in autofocus.
If it's indeed the zoom ring that's stuck, you can spend more money than the lens is worth in repairs, or buy a replacement (circa 35 dollars on ebay) for dreadfully cheap. Good luck.

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2 Answers

The zoom ring has stucked


The fact that you have been in older lenses make this a bit easier. These newer ones are modular.

The circuitry is the most sensitive part, make notes or take a picture of how all the connections are made. Most of the flexible connections are fairly straight forward.

Once you get the lens down to removing the outer barrels, you'll likely find that a zoom guide or two have come undone or are damaged. These are small nylon rollers with a fat screw in the center.

Being that it is winter, static may be a problem. Don't zap the brains of the lens

I'll keep an eye on my email notices, I cannot do live chat since I use a Macintosh most of the time.

Kevin

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There is no secret locking switch. If a little gentle jiggling doesn't free the zoom ring, then I can only suggest you take it in to a reputable camera shop for a Clean-Lubricate-Adjust (CLA).

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