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 EOS Digital Cameras 
Thread started 25 Feb 2017 (Saturday) 10:46
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

5DSR and 400mm f4 DO IQ?

 
Josh13
Member
Avatar
164 posts
Joined Apr 2009
Location: San Diego CA.
     
Feb 25, 2017 10:46 |  #1

Some back story I recently sold my 6D and am looking to get a 5DSR or 5d IV. I haven't seen any mention of the 5DSR and the first version of the 400mm f4 DO anywhere on the internet. The DO is awesome on my 7D and produced impressive results on the 6D. The DO however never really impresses me on the A7R, my thinking is maybe it's the extra resolution or maybe be just the quirky Metabones adapter. I Know the 5d IV is getting really close to the A7R resolution wise.

Does anyone have any thoughts about using the 5DSR and the 400mm f4 DO?


5DIV, Elan 7n, 400 f4 DO I, 100-400mm II, 1.4x TCIII, Tokina 16-28 F2.8, Tokina 12-28 f4, 85 f1.8, 50 f1.8 STM, Flashpoint 620m, YN14EX.
A7rIII, A6300, 100-400 GM, 85 f1.4 GM, 90 Macro, 55 f1.8, 16-35 F4, 35 f2.8, Batis 25 f2, Samyang 14 f2.8 AF, MC-11.
D500, 200-500, Tokina 300 f2.8, 35 f1.8
S110, D20, Hero 6, 3+

  
  LOG IN TO REPLY
yellowt2
Senior Member
265 posts
Likes: 66
Joined Sep 2009
     
Feb 27, 2017 14:55 |  #2

Where in the frame does the A7R image not impress you? The pixel pitch of the 7D is smaller than the A7R, so the center of the image on the A7R should look as sharp as the 7D image (assuming it's in focus). You think the 6D images look better than the A7R; is this only when pixel peeping at 100% resolution, or when viewing a full image at the same size?

Depending on what you're seeing I see two possible explanations:
1. The lens is sharp in the center and slightly soft at the edges. When using the 7D you're looking at a crop of the center, so everything looks good. The 6D is lower resolution, so the edge softness gets hidden to some degree and you don't notice it. The A7R is high enough resolution that when you pixel-peep you see the edge softness. If you view the 6D and A7R full images at the same size they should look similar.
2. Issue specific to the A7R - either the A7R images are not completely in focus, or the adapter/lens mount has a little bit of tilt (this wouldn't surprise me with how heavy that lens is). The A7R doesn't have the best autofocus, especially with an adapter; it's possible the images just are not in the best focus.

If your problem is #1, then the 5DIV or especially 5DSR will show similar issues to what you're seeing on the A7R. If you problem is #2 then the 5D images should look a lot better.




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

1,090 views & 0 likes for this thread
5DSR and 400mm f4 DO IQ?
FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
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 Apo1980
1116 guests, 356 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.