Zoom lenses with two barrels (Page 2): Longshadow wrote: "I have a 18-200 (12 years old next week) where, unless I lock it, if I walk around with the lens facing down, the inner barrel...

camerapapi Loc: Miami, Fl.

Longshadow wrote: "I have a 18-200 (12 years old next week) where, unless I lock it, if I walk around with the lens facing down, the inner barrel creeps out."

Creeping was a fact with the first generation of the 18-200. I also use the rubber band like you do.
I never carry the lens upside down and I always recheck while shooting to make sure it has not moved from the focal length I set on it.

The 18-200 is a very practical zoom that I use very often with my D7000. Many reviews online that find it "acceptable" but it has worked beautifully for me and has become one of my favorite lenses.

Scruples Loc: Brooklyn, New York

grahamfourth wrote:

….My concern is whether, over time, this two-barrel extension will droop or become loose enough such that the alignment of the optics inside will diminish…….

I have experienced “lens creep.”
It is annoying but minimal effect to the optics.

I have used silicon rubber memorial wrist bracelets. While I wrap one over the barrel it does prevent the slip.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

grahamfourth wrote:

I am considering purchasing a Nikon Z lens 24-120. The zoom lens uses two concentric barrels, presumably necessary to extend over the full range. My concern is whether, over time, this two-barrel extension will droop or become loose enough such that the alignment of the optics inside will diminish. Does anyone have experience with such a system and its concentricity over time?

Thank you in advance

Creep used to be a concern on smaller zooms primarily because folks carried the lenses on straps with the camera lens hanging in a downward angle causing it to creep if it were "not locked". Most newer zooms in this zoom range have come a long way in regards to creep. I never strap my camera's so I do not have that issue.
Here are some reviews on the lens, the negative reviews do not mention lens creep.
https://www.bhphotovideo.com/c/product/1669886-REG/nikon_niz241204_nikkor_z_24_120mm_f_4.html/reviews
Further. Ken Rockwell mentions no creep issues with the Z 24-120.
https://www.kenrockwell.com/nikon/z/24-120mm.htm
I owned the second version of that lens for my Nikon D850, I loved the zoom range of 24-120 and again I had no creep issues but I have never personally tried the Z24-120 mainly because I have sadly switched to Sony.
Good luck and keep on shooting until the end.

DirtFarmer Loc: Escaped from the NYC area, back to MA

User ID wrote:

Wrong lens .......

I understand that the OP was considering a different lens but there was a post about the 18-200 creeping so I answered that post. My 18-200 dated from 2005 so it was definitely a previous model. It's good to hear that Nikon has corrected the creep but I have moved to FX in the meantime and the 18-200 is a DX lens. The FX equivalent is the 28-300, which I have (from around 2008). It also creeps, but not as much as the 18-200 did.

wingclui44 Loc: CT USA

grahamfourth wrote:

I am considering purchasing a Nikon Z lens 24-120. The zoom lens uses two concentric barrels, presumably necessary to extend over the full range. My concern is whether, over time, this two-barrel extension will droop or become loose enough such that the alignment of the optics inside will diminish. Does anyone have experience with such a system and its concentricity over time?

Thank you in advance

Loose barrel is one problem of this kind of lens, pumping air in and out inside of the camera is another problem, especially on the Nikon Z camera with the open sensor. it will be easily affected by unwanted dust!

BurghByrd Loc: Pittsburgh

grahamfourth wrote:

I am considering purchasing a Nikon Z lens 24-120. The zoom lens uses two concentric barrels, presumably necessary to extend over the full range. My concern is whether, over time, this two-barrel extension will droop or become loose enough such that the alignment of the optics inside will diminish. Does anyone have experience with such a system and its concentricity over time?

Thank you in advance

Time will tell; so far so good.

User ID

DirtFarmer wrote:

I understand that the OP was considering a different lens but there was a post about the 18-200 creeping so I answered that post. My 18-200 dated from 2005 so it was definitely a previous model. It's good to hear that Nikon has corrected the creep but I have moved to FX in the meantime and the 18-200 is a DX lens. The FX equivalent is the 28-300, which I have (from around 2008). It also creeps, but not as much as the 18-200 did.

My 28-300 cannot creep cuz I dont want that weight on my neck. It rides in a bag over my shoulder. When outa the bag its in my hands (but I still use the neck strap, slack, for safety while holding it).

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Im OK with the imaging over most of its range but I reeeeeeally dont like the weight and the balance. I deal with it when I need it. It came with my 610 in a bundle for twentyfive dollars over the body-only price, so I tend to feel like I shouldnt complain. Yet I doubt I would have ever bought it outright. Its not very appealing at its lens-only price. Its rather low used price seems to agree with my assessment.