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.
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 General Gear Talk DIY & Customizing 
Thread started 06 Nov 2017 (Monday) 15:34
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

MFA Using Spyderlenscal Question

 
david.g.photo84
Member
51 posts
Likes: 1
Joined Sep 2017
     
Nov 06, 2017 15:34 |  #1

Hello,

I just got my 6D back from B&H after exchanging the first one and had a question. I have just received a Spyderlenscal and took a shot at using it, but it was difficult to see exactly where the sharpest point on the chart was when viewing on my laptop. I could see that the top and bottom numbers were pretty blurry and it was difficult for me to see exactly where the sharpest point on the chart was. Has anyone else had this issue? I will admit that I was indoors and used my Yongnuo on camera to light the target since it was late and I don't have sufficient light indoors. The 6D was on a tripod at approximately the same level as the target.

Thank you,

David




  
  LOG IN TO REPLY
TeamSpeed
01010100 01010011
Avatar
33,168 posts
Gallery: 72 photos
Best ofs: 2
Likes: 3475
Joined May 2002
Location: Northern Indiana
Post edited 5 months ago by TeamSpeed.
     
Nov 06, 2017 15:37 |  #2

You can only do MFA when you have sufficient light to a) have a very fast shutter speed so that motion doesn't introduce error and b) have your lens wide open and/or your distance enough to create a thin DOF to make the adjustments.


Past Equipment | My Gallery (external link)

  
  LOG IN TO REPLY
david.g.photo84
THREAD ­ STARTER
Member
51 posts
Likes: 1
Joined Sep 2017
     
Nov 06, 2017 17:01 as a reply to  @ TeamSpeed's post |  #3

Thanks for the tip! The 6D sync speed is under 200, but I felt that having it on a tripod and using the 2 sec delay would be sufficient. I was using my 24-105 F4 and at the wide end I was about 2 ft away and at the telephoto end was about 10 feet away, but the numbers/lines didn't seem very blurry so it was hard for me to identify the sharpest point. I'll try it again during daylight and see if I get different results. The primary reason for me doing it inside is becuse the inside of my house is flat compared to everywhere outside of my house.




  
  LOG IN TO REPLY
MedicinSC
Goldmember
Avatar
1,363 posts
Gallery: 30 photos
Best ofs: 2
Likes: 233
Joined Aug 2011
Location: Beaufort, SC
Post edited 3 months ago by MedicinSC.
     
Dec 28, 2017 21:14 |  #4

You will definitely need to do it inside. Outside introduces target movement due to wind, inconsistent lighting due to moving clouds, etc.

You just need to make sure you have plenty of light indoors. Preferably constant lighting, since your flash only fires when the picture is taken, but after focusing. You can go to any home improvement store and get some of those clamp light reflector things. Put some daylight bulbs in them and point them at the target. But, make sure there is no glare on the target.

Take your time with the shots, defocusing between them, making the camera refocus. If you don't have a cable release, use the 10 second timer, to be sure there is absolutely no movement going on when the picture is taken. Using a cable release is better.

I have poor vision. I have used Focus Tune, found here: http://michaeltapesdes​ign.com/focustune.html (external link). Currently, I am using Focal, found here: https://www.reikanfoca​l.com/ (external link). I am not completely sold on the results of Focal, yet. However, I love the assisted target setup.

You can also look up DotTune. Or, you can line up some batteries and go to town (somewhere in these forums, I think). Lots of methods to do this.




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

469 views & 1 like for this thread
MFA Using Spyderlenscal Question
FORUMS General Gear Talk DIY & Customizing 
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?
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 ©
for photography-on-the.net

Latest registered member is Summers
673 guests, 282 members online
Simultaneous users record so far is 6430, that happened on Dec 03, 2017

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.