billnikon wrote:
A lot depends on the design and sealing of the lens. There is more of a tendency for dust to enter on a lens that externally changes as it zooms. Think suction. The faster you do it, (move it in and out) for men not on the toilet, but out in the field, the greater the suction effect. If the lens is sealed properly, then you might be OK. But generally speaking, lenses that externally zoom, may get dust over time.
My main grip out externally zoomed lenses is the fact they cannot be used on a Gimbal type head because as you zoom you change the balance of the lens rendering the Gimbal ineffective.
A lot depends on the design and sealing of the len... (
show quote)
With some zooms, the front barrel rotates. Fun with polarizers and grad ND filters.
All I can say is I've been using zooms for over 50 years and never had a problem.
Architect1776 wrote:
Why do UHH people and reviewers panc over some zoom lenses that extend when zoomed out talking about dust and moisture as a fault.
Yet the Z 24-70mm f2.8 and Sony 24-70mm f2.8 trombone in and out when zoomed with no concerns expressed here Or in reviews. Would this not change balance and allow dirt and moisture in as the lens is zoomed?
I have a Canon EF 28-300mm f/3.5-5.6L IS USM Lens, also called a "Pumper (push/pull zoom) Design" which I purchased in 2007. I used it as my sole lens until about 2018 with no problems at all with dust, moisture, etc. As a side note, I always had a Canon Protect Filter on the lens. I have taken every precaution regarding changing lenses since purchasing other lenses/bodies. I rarely change a lens though. If you look at a drawing of a quality, Canon (or other brand) "L" lens there is no direct path for air between the lens elements. My only fault for this lens is that at 3.7 lbs. it is a tad heavy.
https://www.the-digital-picture.com/Reviews/Lens-Product-Images.aspx?Lens=295My new Canon RF 100‑500mm f/4.5‑7.1L IS USM lens is of a similar design except that you rotate the collar to extend the lens rather than the "Push/Pull" motion of the Canon EF 28-300mm f/3.5-5.6L IS USM Lens.
Likewise, I am expecting the same trouble-free service that I had with my first purchased DSLR (Canon EF 28-300mm f/3.5-5.6L IS USM) Lens. This lens is also a tad heavy at 3.38 lbs.
https://www.the-digital-picture.com/Reviews/Canon-RF-100-500mm-F4.5-7.1-L-IS-USM-Lens.aspx or
https://www.kenrockwell.com/canon/eos-r/lenses/100-500mm.htmThe bottom line is that I have and use both and these are my Real-Life experiences with both, without Any "Bench Racing", "They Tell Me", or Blah, Blah, Blah, etc.
Smile,
JimmyT Sends
yorkiebyte
Loc: Scottsdale, AZ/Bandon by the Sea, OR
Architect1776 wrote:
Why do UHH people and reviewers panc over some zoom lenses that extend when zoomed out talking about dust and moisture as a fault.
Yet the Z 24-70mm f2.8 and Sony 24-70mm f2.8 trombone in and out when zoomed with no concerns expressed here Or in reviews. Would this not change balance and allow dirt and moisture in as the lens is zoomed?
Everyone here on UHH is Rich$$ ('cept me, of course!), and when a lens gets dirty, inside or out, they just buy a new, hopefully more expensive, lens - with a new and improved Body attached to said lens!!
Come on, Architect1776, get with the Program! ...Ha!
He sees panic everywhere...
Longshadow wrote:
They are worried about dust and moisture getting sucked into the lens upon extension.
Some lenses more than others.
Simplest fix: Don't extend it.
Oh, wait......
Perhaps a lens condom would solve their problem. 😏😏
Grahame wrote:
Buyers have choices and the smart ones buy gear that gives them confidence in the situations they use it.
I'm almost inclined to believe that this guy really is an architect. In my practice, I have found them to be for the most part arrogant and self centered. It's either my way or no way.
Jimmy T wrote:
The bottom line is that I have and use both and these are my Real-Life experiences with both, without Any "Bench Racing", "They Tell Me", or Blah, Blah, Blah, etc.
Smile,
JimmyT Sends
br The bottom line is that I have and use both an... (
show quote)
I guess that buying a quality product-Nikon Z mount lenses (or any other mfg); S or not-and the mfg claims of 'weather sealing'; really do not give me concern if I follow prudent advice and common sense use. Pros who shoot in extreme conditions, and use these lenses, are good enough for me. One of the foremost experts, in just about everything says....
jbk224 wrote:
I guess that buying a quality product-Nikon Z mount lenses (or any other mfg); S or not-and the mfg claims of 'weather sealing'; really do not give me concern if I follow prudent advice and common sense use. Pros who shoot in extreme conditions, and use these lenses, are good enough for me. One of the foremost experts, in just about everything says....
Know thyself...always the key.
Not everyone uses their gear the same way...not everyone is careful...or thoughtful...or even bright...not everyone.
I have two friends who like to buy outrageously expensive cars...it's their...thing.
One beats the hell out of his car...then sells it to some poor up and coming 30 year old...who is about to learn an expensive life lesson.
The other friend babies his rides...intends to keep them a long while.
On the market...they look the same...they aren't.
Same with camera ppl. Only you know how to treat your gear...and weather sealing is not a concern for those who know how to take care of their gear...in the field.
Sorry guys but I thing some are just looking for trouble. Cheers.
If you want to reply, then
register here. Registration is free and your account is created instantly, so you can post right away.