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 19 Apr 2011 (Tuesday) 10:47
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

canon 70-200 2.8 non IS

 
musso
Senior Member
Avatar
662 posts
Gallery: 8 photos
Likes: 37
Joined Dec 2007
Location: 36.039N - 114.981W
     
Apr 19, 2011 10:47 |  #1

can someone tell me what f/stop the 70-200 is sharpest at.
and does the ISO have a lot to do with the sharpness.

i have a 5DII and normally like to shoot at ISO 100-160.

thank you
joe




  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
george ­ m ­ w
Goldmember
Avatar
4,022 posts
Likes: 1
Joined Oct 2007
     
Apr 19, 2011 11:16 |  #2

This lens is known to be a pretty sharp even from wide open. If you want to do some pixel peeping and look at tests that shoot focus charts and other items that are intended to quantify this, do a search and you'll come up with enough boring things to look at for the next several days. To answer your question a little better, this lens is like most glass in that it gets better as you stop it down one to three stops from wide open.
Increasing ISO causes various issues with the file, some of which may be seen as detrimental to "sharpness". But in general, I would say that increasing ISO moderate amounts ( say, up to about ISO800 on most modern, quality DSLR's ) does not cause problems. Certainly the 5D2 has a well deserved reputation for performing well at high ISO.
I think you will find this lens on your camera to be a very good match that can produce awesome images especially at ISO100-160.

Looking now at your gear list, I see you have this lens.....so you tell us....what do you think about it ?


regards, george w

"It's also obvious that people determined to solve user error with more expensive equipment will graduate to expensive user error."
Dave N.

  
  LOG IN TO REPLY
musso
THREAD ­ STARTER
Senior Member
Avatar
662 posts
Gallery: 8 photos
Likes: 37
Joined Dec 2007
Location: 36.039N - 114.981W
     
Apr 19, 2011 17:48 |  #3

i have got some great images out of the lens but lately it has just not been as sharp as usual. i was just wondering about the ISO i have tested hand held and tripod mount high shutter speed and low shutter speed and and used a timer it is just not very sharp. i will post some images later on tonight.

i love this lens it is great

thank you
joe




  
  LOG IN TO REPLY
george ­ m ­ w
Goldmember
Avatar
4,022 posts
Likes: 1
Joined Oct 2007
     
Apr 19, 2011 18:00 |  #4

Joe,
Do you have a filter on it ? If so, remove it and shoot some test shots again.


regards, george w

"It's also obvious that people determined to solve user error with more expensive equipment will graduate to expensive user error."
Dave N.

  
  LOG IN TO REPLY
musso
THREAD ­ STARTER
Senior Member
Avatar
662 posts
Gallery: 8 photos
Likes: 37
Joined Dec 2007
Location: 36.039N - 114.981W
     
Apr 19, 2011 19:48 |  #5

i just did some test shots with the filter and with out no difference. let me know if is just me. i might just be over looking at these.


HOSTED PHOTO
please log in to view hosted photos in full size.



HOSTED PHOTO
please log in to view hosted photos in full size.




  
  LOG IN TO REPLY
george ­ m ­ w
Goldmember
Avatar
4,022 posts
Likes: 1
Joined Oct 2007
     
Apr 19, 2011 20:43 |  #6

Kinda hard to say once these shots get all compressed and such to end up here on the web. And I'm not so sure that the subject matter in these two lend themselves to a good critique of the lens.
Having said that, I agree these don't look too impressive, but what I would suggest is to shoot something without the filter, in good diffused light at about 10 feet away, and let's see what you come up with. And of course all the usual stuff, as in a fast enough shutter speed to eliminate camera shake, or on a tripod with MLU and a cable release or self timer.


regards, george w

"It's also obvious that people determined to solve user error with more expensive equipment will graduate to expensive user error."
Dave N.

  
  LOG IN TO REPLY
Breezy900
Senior Member
318 posts
Joined Oct 2010
Location: CA
     
Apr 19, 2011 22:04 |  #7

Taken with the old 5d. Not the mark 2. Sharp at f2.8

IMAGE: http://farm6.static.flickr.com/5216/5473469652_e6f06cb71e_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/bloung/54734696​52/  (external link)
IMG_8554 (external link) by bloung (external link), on Flickr

5D Mark 2 Gripped
17-40L
35L
85 1.8

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

2,982 views & 0 likes for this thread
canon 70-200 2.8 non IS
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 stitch123
930 guests, 349 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.