Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
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 17 Mar 2013 (Sunday) 00:57
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

24-105L ... centre sharpness at F4 105

 
robonrome
Goldmember
Avatar
2,746 posts
Likes: 1
Joined May 2008
Location: Australia
     
Mar 17, 2013 00:57 |  #1

Hi All, I've had the 24-105L for four years and it's my most used lens. Recently it developed the dreaded aperture circuit problem which seems to bedevil this lens once it matures - froze on apertures above F4 and had to get ribbon cable inside replaced...not cheap either.

Hadn't used it much since, but playing around today I started to notice it no longer appears as sharp in the centre wide open... sure there was always a deterioration in sharpness in the corners, but now I'm seeing a drammatic increase in sharpness moving from f4 to f5.6 and again to f8 in the centre. I've always felt in the past the lens was very sharp in the centre even at F4 at least not appreciably softer than at F5.6.

Wondering now if some lens elements may have got misaligned when the aperture problem was fixed... or maybe I'm just noticing something that was always there...since getting the 70-200 2.8 mk2 I confess to have a new standard for sharpness so maybe it's just me.

What's the prevailing view on the 24-105 ...do others notice a big difference in sharpness from F4 to F5.6 esp at the long end?


rob - check my galleries at http://hardlightimages​.zenfolio.com/ (external link)
Zenfolio coupon discount when signing up - 93R-NCK-DUT
_______________
Canon 5D Mkiii; Sony RX100; Lumix G5; 17-40L; 24L TS-E F3.5 Mk2; 24-105L IS; 40 F2.8; 135L; 70-200L F2.8 IS MkII; Ext II 1.4x; 580 exII; 270 ex... other filtery stuff:)

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
jrscls
Goldmember
2,982 posts
Gallery: 72 photos
Likes: 729
Joined Mar 2008
Location: Pittsburgh, PA
     
Mar 17, 2013 05:42 |  #2

Just reviewed a few hundred photos my wife took at an event with this lens, all at f4, and the sharpness was excellent even at longer focal lengths. I rarely shoot this lens at f5.6, usually it is either wide open at f4 with flash for indoors or around f11 for studio portraits or outdoor landscape use.


Fujifilm X-T3, 16mm f/1.4, 23mm f/1.4, 35mm f/1.4, 56mm f/1.2, 80mm f/2.8 OIS Macro, 100-400mm f/4.5-5.6 OIS, 1.4x TC, Flashpoint R2 Strobes/Flashes

  
  LOG IN TO REPLY
ejenner
Goldmember
Avatar
3,654 posts
Gallery: 66 photos
Likes: 505
Joined Nov 2011
Location: Denver, CO
     
Mar 17, 2013 13:58 as a reply to  @ jrscls's post |  #3

Well, I guess I've always stopped down my copy when I can finding the same as the OP - a nice increase in sharpness from f4 to f5.6.

http://www.photozone.d​e …-canon_24105_4_5d?start​=1 (external link)

At least this tested copy looks like the largest jump from f4 to f5.6 is at the long end.

I must admit though, I haven't done a lot of testing on mine and no controlled tests vs FL, more just observations on shooting portraits.

Usually mis-alignment affects the edges more than the center. I would try to check that the corners are equally sharp (soft). Your 70-200 is going to kick this lens all over the park, you should probably be comparing it to something a little less stellar.


Edward Jenner
5DIII, 7DII, M6, GX1 II,M11-22, Sig15mm FE,16-35 F4,TS-E 17,Sig 18-250 OS Macro,M18-150,24-105,T45 1.8VC,70-200 f4 IS,70-200 2.8 vII,Sig 85 1.4,100L,135L,400DOII.
http://www.flickr.com/​photos/48305795@N03/ (external link)
https://www.facebook.c​om/edward.jenner.372/p​hotos (external link)

  
  LOG IN TO REPLY
windpig
Chopped liver
Avatar
14,736 posts
Gallery: 5 photos
Likes: 1075
Joined Dec 2008
Location: Just South of Ballard
     
Mar 17, 2013 14:52 |  #4

Mine is sharp throughout it's aperture range.


Would you like to buy a vowel?
Go ahead, spin the wheel.
flickr (external link)
I'm accross the canal just south of Ballard, the town Seattle usurped in 1907.

  
  LOG IN TO REPLY
robonrome
THREAD ­ STARTER
Goldmember
Avatar
2,746 posts
Likes: 1
Joined May 2008
Location: Australia
     
Mar 17, 2013 16:02 |  #5

Thanks all. Sounds like mixed experience. Weird thing is I''ve never noticed any big jump in sharpness fro f4 to f5.6 in the four years I had the lens. Only noticed just now and the only thing that's happened recently is the aperture circuit fix, though as said above I would have expected any issue to surface more in the corners.

Did some more testing with IS off and on and on a tripod but there's no escaping that big sharpness different e f4 to 5.6. No MFA needed either.


rob - check my galleries at http://hardlightimages​.zenfolio.com/ (external link)
Zenfolio coupon discount when signing up - 93R-NCK-DUT
_______________
Canon 5D Mkiii; Sony RX100; Lumix G5; 17-40L; 24L TS-E F3.5 Mk2; 24-105L IS; 40 F2.8; 135L; 70-200L F2.8 IS MkII; Ext II 1.4x; 580 exII; 270 ex... other filtery stuff:)

  
  LOG IN TO REPLY
firslash
Member
Avatar
52 posts
Joined Sep 2012
     
Mar 19, 2013 06:23 |  #6

i once tried f/4.0 but can't get sharp image (well, it's sharp but not sharp enough for me).
and i tried f/5.6, yes it looked sharper.
but when i twisted it to f/5.0, PERFECT! :)


- Canon EOS 7D - Tamron AF 90mm f/2.8 SP Di Macro - KMZ Helios 44M 58mm f/2.0 - Carl Zeiss Jena Tessar 50mm f/2.8
flickr (external link)

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

1,245 views & 0 likes for this thread
24-105L ... centre sharpness at F4 105
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
AAA
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?
Register to forums
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 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is Gaspedal21
821 guests, 433 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net 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.