conurus

[mwtphoto]

i am looking for some input about two items pertaining to the above lens.

1- do you find that the barrel creeps when walking around - mine always zooms out as i walk about.

2 - are these lens good or bad in terms of sucking dust into the barrell.

thank you
mark

[Freedolin]

1) haven't noticed that on mine

2) bad. applies to the 24-85 as well as 70-300

-- Markus

[mwtphoto]

if i hold the lens straight up or down it will creep either all the way out or all the way in. do you think something needs to be tightened.

thanks
mark

[John Black]

No lens creep on mine. Bo-ming may be able to offer some guidance on whether or not it's possible to "tighten" up the lens. If you're happy with the lens optically, I'd leave it as is. The risk of opening up the lens and maybe an element shifting isn't worth it to me.

[conurus]

Zoom creep is a really common problem with the N24-85. Most samples will zoom back to 24mm after a few seconds on its own when you point it upwards.

To tighten it, we could use a thicker lubricant for the zoom ring. This is a safe procedure with virtually no risk of misaligning any optical element. The reason is that the optics are housed in a completely separate assembly and the zoom ring is in the outer shell. If the zoom creep problem really annoys you, I would be very happy to make the adjustment for you. However, after the procedure the zoom ring will become considerably stiffer and as a result there is a greater risk of premature wear. There might have been a reason why Zeiss left the lens the way it is - most samples are like that.

[mwtphoto]

thanks for your replies. i think i will monitor it some more and see if it really annoys me or not. it virtually has to be within 5 degrees of straight up or down before it creeps. nice to know it can be done without touching the optics though - thanks for the advice Bo-Ming.

attached is one of my first shots with the lens.

mark