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
Forums  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear
Guest
Forums  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear
Register to forums    Log in

 
FORUMS Photo Sharing & Discussion Kids & Family 
Thread started 03 Mar 2013 (Sunday) 22:05
Search threadPrev/next
sponsored links (only for non-logged)

I have focusing issue..please help !!!

 
PhuongMy704
Senior Member
382 posts
Likes: 1
Joined Dec 2009
     
Mar 03, 2013 22:05 |  #1

I dont know where to post this but if anyone know what the problem is, please tell me... i dont know if it's my 5d or my 50mm 1.4 lens.

I always focus on her face and her eyes but most of my pictures, when i upload it on my computer, looks like it's focused somewhere else.

for example, this picture, the leaves underneath her chair is in focus, while her body is not.

IMAGE: http://farm9.staticflickr.com/8089/8526126895_7ae829fc44_b.jpg

Thank you for your help !!

Oversized image changed to link. POTN max. image size is 1024 pixels on a side.

Jon

Www.facebook.com/Phuon​gMyPhotography (external link)
http://pmfotography.wo​rdpress.com/ (external link)

  
  LOG IN TO REPLY
melvinm
Junior Member
21 posts
Likes: 3
Joined Dec 2008
     
Mar 03, 2013 23:30 |  #2

http://photographylife​.com …dslr-for-autofocus-issues (external link)

http://www.lensrentals​.com …010/11/how-to-test-a-lens (external link)




  
  LOG IN TO REPLY
CyberDyneSystems
Admin (type T-2000)
Avatar
52,880 posts
Gallery: 192 photos
Likes: 10025
Joined Apr 2003
Location: Rhode Island USA
     
Mar 03, 2013 23:52 |  #3

Are you selecting a single AF point, or are you letting the camera decide from any of the ( 9??) AF points?

If the Camera is doing the decision making, that could be your issue. Usually, the camera just selects the AF point on the area that is closest to the camera. This leaves no actual control over composition and focus.


GEAR LIST
CDS' HOT LINKS
Jake Hegnauer Photography (external link)

  
  LOG IN TO REPLY
jcammn
Member
Avatar
72 posts
Likes: 1
Joined Mar 2010
     
Mar 04, 2013 09:51 |  #4

I'm trying to learn this lens as well and have had similar issues. After doing some reading on it I learned that the sweet spot for sharpness is more in the f 2.0 and up area. I don't see your exif data so I can't say for sure if that is your issue but it definitely helped me. I've also recently recognized that I've become too dependent on the IS on my other lenses. This lens does not have IS so either use a tripod or get your shutter speeds up.
I'm a newbie with this lens so take it with a grain of salt.


70D | X-T1 | 100M | 10-22 | 16-35 | 35 | 24-70 | 70-200 | 100-400 | Attempts (external link)

  
  LOG IN TO REPLY
PhuongMy704
THREAD ­ STARTER
Senior Member
382 posts
Likes: 1
Joined Dec 2009
     
Mar 04, 2013 11:45 |  #5

thank you melvin.. good stuff !!


Www.facebook.com/Phuon​gMyPhotography (external link)
http://pmfotography.wo​rdpress.com/ (external link)

  
  LOG IN TO REPLY
PhuongMy704
THREAD ­ STARTER
Senior Member
382 posts
Likes: 1
Joined Dec 2009
     
Mar 04, 2013 11:45 |  #6

CyberDyneSystems wrote in post #15674042 (external link)
Are you selecting a single AF point, or are you letting the camera decide from any of the ( 9??) AF points?

If the Camera is doing the decision making, that could be your issue. Usually, the camera just selects the AF point on the area that is closest to the camera. This leaves no actual control over composition and focus.

yes im selectiong a single AF point, and always put it on the eye closest to me.


Www.facebook.com/Phuon​gMyPhotography (external link)
http://pmfotography.wo​rdpress.com/ (external link)

  
  LOG IN TO REPLY
PhuongMy704
THREAD ­ STARTER
Senior Member
382 posts
Likes: 1
Joined Dec 2009
     
Mar 04, 2013 11:47 |  #7

jcammn wrote in post #15674998 (external link)
I'm trying to learn this lens as well and have had similar issues. After doing some reading on it I learned that the sweet spot for sharpness is more in the f 2.0 and up area. I don't see your exif data so I can't say for sure if that is your issue but it definitely helped me. I've also recently recognized that I've become too dependent on the IS on my other lenses. This lens does not have IS so either use a tripod or get your shutter speeds up.
I'm a newbie with this lens so take it with a grain of salt.

Shutter speed was pretty fast so i didnt really need a tripod, and above 2.0
1/1600 ƒ/2.5 ISO 250


Www.facebook.com/Phuon​gMyPhotography (external link)
http://pmfotography.wo​rdpress.com/ (external link)

  
  LOG IN TO REPLY
Lowner
"I'm the original idiot"
Avatar
12,924 posts
Likes: 18
Joined Jul 2007
Location: Salisbury, UK.
     
Mar 04, 2013 13:28 |  #8

It appears that the chair back rail is sharp and thats behind the child. So it points to subject movement. But I'd stay away from f/2.5 and move to something that will give you more DoF just in case, f/5.6 or f/8 for example.


Richard

http://rcb4344.zenfoli​o.com (external link)

  
  LOG IN TO REPLY
Brupikk
Member
Avatar
188 posts
Gallery: 2 photos
Likes: 18
Joined Jul 2012
Location: Brazil
     
Mar 04, 2013 14:14 |  #9

Lowner wrote in post #15675802 (external link)
I'd stay away from f/2.5 and move to something that will give you more DoF just in case, f/5.6 or f/8 for example.

what is the point about paying more and buying 1.4 lens and use them in 5.6-8 ?


ps: I´m having a similar issue with my t4i and 50mm 1.8 :( mine seems to have front focus issue, even using around 2.5-2.8, central point, one shot, focusing the eyes


Brupikk - Brazil
Canon 6D + Canon 6D + Canon 6D + 24-105mm f/4 + 70-200mm f/4 + 50mm f/1.8 + 35mm f/2.0

  
  LOG IN TO REPLY
Lowner
"I'm the original idiot"
Avatar
12,924 posts
Likes: 18
Joined Jul 2007
Location: Salisbury, UK.
     
Mar 05, 2013 03:17 |  #10

Brupikk wrote in post #15675971 (external link)
what is the point about paying more and buying 1.4 lens and use them in 5.6-8 ?

Just because my car will do 130mph, does not mean I'm obliged to break the law!

Have a good close look at some DoF charts. In particular note how extremely "thin" the focal plane is at the wider apertures. Now be aware that the nice sharp focus boxes are not real, the actual AF points are in reality big blobs only vaguely in the same area. Add these two things together and think about what you are trying to achieve with any picture before deciding on things like aperture/shutter speed and ISO.


Richard

http://rcb4344.zenfoli​o.com (external link)

  
  LOG IN TO REPLY
twinkle_2k86
Member
Avatar
141 posts
Gallery: 2 photos
Likes: 48
Joined Jul 2009
Location: Andover/ Salisbury uk
     
Mar 06, 2013 15:39 as a reply to  @ Lowner's post |  #11

I was finding the same with my 50mm 1.8 lens. I am use to half press shutter to get lock then take pic, trouble I found was because you have such a shallow dof you only have to move or subject move mm's and the sweet spot is not in the right place.
I find now shooting at f2.2 and just pushing shutter down fully has sorted it, as once it locks on it takes the pic sraight away. No time for movement.

Have a go and see how you get on.


Jon Harris Photography.
Canon 40D ,Gripped x 2, 50mm 1.8 II, 28-70 II f3.5-4.5, Tamron 70-300 vc, Tamron 90mm macro
Sigma 150-600 OS Comp.

  
  LOG IN TO REPLY
Maureen ­ Souza
Ms. MODERATOR     Something Spectacular!
Avatar
34,022 posts
Gallery: 8 photos
Likes: 8685
Joined Feb 2005
Location: Central California
     
Mar 06, 2013 21:28 |  #12

What was your focal length? If you were close to the baby, you might not have had enough DOF for the distance.


Life is hard...but I just take it one photograph at a time.

5DMK4
7DMK2
Canon Lenses: 50/1.4, 135/2.0, 100-400mm II, 24-70/2.8 II

  
  LOG IN TO REPLY
Maureen ­ Souza
Ms. MODERATOR     Something Spectacular!
Avatar
34,022 posts
Gallery: 8 photos
Likes: 8685
Joined Feb 2005
Location: Central California
     
Mar 06, 2013 21:30 |  #13

BTW, I use my 50mm/1.4 for almost all of my newborn sessions and it is so crystal sharp, Sadly, my hubby dropped it on the driveway and it has been to the service center twice in the past 10 days. If they can't fix it, I will definitely buy another one.


Life is hard...but I just take it one photograph at a time.

5DMK4
7DMK2
Canon Lenses: 50/1.4, 135/2.0, 100-400mm II, 24-70/2.8 II

  
  LOG IN TO REPLY
sponsored links (only for non-logged)

2,037 views & 0 likes for this thread.
I have focusing issue..please help !!!
FORUMS Photo Sharing & Discussion Kids & Family 
AAA
x 1600
y 1600

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

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 2.52forum software
version 2.52 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is Jimmymod67
863 guests, 233 members online
Simultaneous users record so far is 15,144, 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.