Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies. Read More.
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 25 Feb 2012 (Saturday) 11:32
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Dust/Flake in 50mm f1.0L

1,150 posts
Likes: 74
Joined Mar 2011
Feb 25, 2012 11:32 |  #1

Friend of mine is willing to sell his 50mm f1.0L very cheap as he is moving to Nikon.
Price is very reasonable consireding used ones go around $5000 on Ebay.
Only problem is there is a dust. Not much actually one single flake on one of the elements inside. It is about 1 cm from the side, since it is a HUGE glass that dust flake is strikingly visible when you look at it.
I can not see anything from the viewfinder, and I did couple of test shots with 5D and did not see any dust or flake reflected on my images.
He gave me the lens for a week to evaluate before buying, is there any circumstances I can try to reflect that dust/flake on the image? Such as wide open? Shoot at f11 or higher? Shoot a sky? White paper? etc?
I just want to see if it will be visible in some conditions and if it is that will possible lower the selling price :D

Ali Engin Photography (external link)

sponsored links
(this ad will go away when you log in as a registered member)
1,630 posts
Likes: 74
Joined Jan 2008
Location: houston, tx
Feb 25, 2012 11:35 |  #2

it will show up in all the pics... i will buy it from you cheap though. ill just clone it out every time.

but to answer your question it won't show up... even stopped down you probably won't see it at all

Senior Member
527 posts
Joined Mar 2011
Location: Danbury, CT
Feb 25, 2012 11:42 |  #3

http://www.lensrentals​.com …e-apocalypse-of-lens-dust (external link)

Canon 5D MkII | T2i | 35L | 24-105 IS L | 70-200L | 100L | 17-40L | 85 1.8 | 50 1.4 | 430EX II
5∞ (external link) | GEAR & FeedBack | flickr (external link)

Cream of the Crop
10,239 posts
Likes: 68
Joined Aug 2007
Location: San Jose, California
Feb 25, 2012 11:45 |  #4

As previous response says (in the second line)....

That "flake" inside the lens won't show up much in images.... You might get a shadow from it at really small apertures. Of course, that's sort of the opposite reason for buying an f1.0 lens... they're usually not used at small apertures.

You also might see some flare from the flake, in extreme light situations.

However, it could be cleaned out.

I'd be more worried about where that flake came from. I recently looked at a bargain priced camera that had what appeared to be a lovely, fast Vario Leitz lens on it... But on close examination I saw that there were some flakes inside the front of the lens... They were coatings coming off one or more of the internal elements. Pretty much ruined the lens. So I passed, even though the price was attractive.

Alan Myers (external link) "Walk softly and carry a big lens."
5DII, 7DII(x2), 7D(x2) & other cameras. 10-22mm, Tokina 12-24/4, 20/2.8, TS 24/3.5L, 24-70/2.8L, 28/1.8, 28-135 IS (x2), TS 45/2.8, 50/1.4, Tamron 60/2.0, 70-200/4L IS, 70-200/2.8 IS, 85/1.8, Tamron 90/2.5 Macro, 100/2.8 USM, 100-400L II, 135/2L, 180/3.5L, 300/4L IS (x2), 300/2.8L IS, 500/4L IS, EF 1.4X II, EF 2X II. Flashes, studio strobes & various access. - FLICKR (external link) - EXPOSUREMANAGER (external link)

happy with myself for not saying anything stupid
17,782 posts
Gallery: 19 photos
Likes: 1508
Joined Mar 2006
Location: S.F. Bay Area
Feb 25, 2012 13:38 |  #5

just so you know...the prices listed on ebay aren't what they sell for, it's what people are asking...they could ask a million dollars that doesn't make them that valuable if they're not getting it...

they sell on ebay for about $3,000-$3,500

Andre or Dre
gear list
Instagram (external link)
flickr (external link)
my 366 for 2016 (external link)

1,792 posts
Gallery: 8 photos
Likes: 37
Joined May 2009
Location: Fort Myers, FL
Feb 25, 2012 20:14 |  #6

It depends if it is closer to the front element or the back element. It will have a much higher impact if it is toward the back.
Edit: I read the speck was 1cmon its side... reading again it is located at 1cm for the edge.(Correct ?) If it is in fact dust there is nothing to worry about and it will not show up.


"Holy crap its long!"
20,960 posts
Gallery: 332 photos
Likes: 1389
Joined Oct 2008
Location: Buffalo, NY
Feb 25, 2012 21:03 |  #7

You probubly wont see ever... Especially not at f/1.0​dirty_lens_articleid35​.html (external link)

Gear, New and Old! RAW Club Member
Wanted: 70-200. Time and good health
Deviantart (external link)
Flickr (This is where my good stuff is!) (external link)

2,283 posts
Likes: 3
Joined Jun 2009
Location: Boston, MA, USA
Feb 25, 2012 21:44 |  #8

I heard Canon will clean it for a fair price and adjust it while they at it, too.

My imagine composition sucks. I need a heavier lens.

sponsored links
(this ad will go away when you log in as a registered member)

1,096 views & 0 likes for this thread
Dust/Flake in 50mm f1.0L
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!

COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.

POWERED BY AMASS forum software 2.0forum software
version 2.0 /
code and design
by Pekka Saarinen ©

Latest registered member is cottoncandy018
750 guests, 310 members online
Simultaneous users record so far is 6430, that happened on Dec 03, 2017 Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.