Free Shipping on ALL Products
camera reviewsbest cameraslens reviewsphotography tipscamera forumvideo toursphotography bookssupport me
It is currently Mon Dec 29, 2014 2:29 am

All times are UTC




Post new topic Reply to topic  [ 59 posts ]  Go to page Previous  1, 2, 3, 4  Next
Author Message
 Post subject:
PostPosted: Sun Jun 19, 2011 12:31 pm 
@Razvan - Do you have any examples of the difference in the bokeh between f/1.8 and f/2 on the 35/1.8? While I trust that there is a small difference in sharpness, I find it hard to believe there would be a noticeable improvement in the bokeh just from stopping down 1/3rd of a stop.


Top
  
 
 Post subject:
PostPosted: Sun Jun 19, 2011 1:44 pm 
Offline
User avatar

Joined: Sun Feb 15, 2009 12:59 pm
Posts: 6009
Location: The Netherlands
Well, the aperture shape changes a bit, so there could be a difference.

_________________
I take pictures so quickly, my highschool was "Continuous High".


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jun 19, 2011 3:02 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
I'd suggest to post insights about the 35/1.8 in an own thread, as it is a little off-topic in a thread about the 50/1.8G.
That way one can find the information much easier afterwards.
I'll be trying for some bokeh test-shots too on this lens and see what happens when stopping down from f/1.8 to F/2.0 - and naturally comparing that to the 50/1.4G. It's all scheduled for next week.

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 20, 2011 5:55 am 
Offline

Joined: Fri Oct 31, 2008 12:12 pm
Posts: 38
Location: Qantas
Jus got meself one today and was pretty impressed with it $250aud


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 20, 2011 4:18 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
Have fun with the new lens, KA734! I'm sure you will not be disappointed.
---
Today was "axial color day" with the new lens. Axial color also called "longitudinal CA" (loCA) render subjects in front of the plane of sharpest focus in a magenta tint and subject behind that plane in a greenish tint. The effect is reduced when stopping down the lens.
It is one of the problems that often occur with large aperture primes. Nikon's latest f/1.4 lenses like the 85/1.4G and 35/1.4G had plenty of it. It could be corrected in post, but it's not as easy to clean up as lateral CAs. CaptureNX has a routine for eliminating loCAs, but if you turn it up to 100% it is not without side-effects.

The new 50/1.8G turned out to be low on loCAs which are almost gone at f/2.8 and beyond. It is clearly better in this respect than the 50/1.4G. See the results below, 50/1.8G first, followed by 50/1.4G (this is reproduced slightly below 50%, to access the large 100% original click through the image):

Image

Image

On a side-note: if you look closely, you might find that there is a jump in "background-sharpness" when stopping down from f/2.0 to f/2.8 while the foreground is almost unchanged. As focus was achieved manually in live-view at f/1.8 and not altered when stopping downn this is a clear indicator of focus shift to the back.
The 50/1.4G sharpens up more regularly when stopped down.

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 20, 2011 9:27 pm 
Offline
User avatar

Joined: Tue Jul 27, 2010 8:57 am
Posts: 1551
Location: Winterpeg, Manisnowba, Canada
I tried out the 1.8 and the 1.4 at the store a while back, and honestly I don't think that I'd want to spend the extra money on the 1.4. The 1.8 seems to be a smidge sharper, and of course cheaper. However, I'd want to see how these lenses actually compare in real life situations, so I'll consider renting them sometime.

_________________
-Evan

Gear: 7 Nikon Nikkor AI-S and AF-S lenses, SB-700 flash, Nikon D7000, Nikon FM, variety of accessories

"There are no rules for good photographs, there are only good photographs."
- Ansel Adams


Top
 Profile  
 
 Post subject:
PostPosted: Fri Jun 24, 2011 8:08 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
Tests are proceeding according to plan, famous lasts shots being done. have to send the lens back on Monday.
The write-up of the results will take some time though plus some comparative shots with the 50/1.4G...

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jun 26, 2011 11:26 am 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
I'm through with testing of transmission. This is on my test plan since the Nikon DX AF-S 35/1.8G came out rendering darker images then e.g. the AF-S 35/1.4G at the same apertures by around 1/2 stop.
Well, the 50/1.8G was only very slightly darker than the 50/1.4G which might very well be down to tolerances in the aperture mechanisms. Fully open, where such differences don't play a role the 50/1.4G is 2/3 of a stop brighter in the center than the 50/1.8G, as was to be expected.
In the image corners the story is a bit different as light fall-off comes into play: at f/1.8 or f/2.0 the 50/1.4G has actually less fall-off than the 50/1.8G so corners turn out to be almost 1/3 of a stop brighter on a DX sensor.

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jun 28, 2011 7:49 am 
so,it's correct to say that the F/1.4 lenses are more accurate in terms of exposure compared to their budget F/1.8 counterparts? I mean,I want to know what I should understand from this. (because I've experienced different results with different lenses,at the same apertures...btw did you know that the Tamron 17-50mm F/2.8 is darker than the Nikon 18-105mm,both at F/5.6?)

p.s. no,there really aren't distinguishable differenced between F/1.8 & F/2.0 on the 35mm in terms of bokeh. I aqsually remained with a certain comparisson in mind,that of the F/2.8 vs. F/2.0 & the lather,had much creamier bokeh. so the only thing the F/2.0 has is more sharpness & a bit more DoF & remains my favorite aperture for very difficult shooting scenarios.


Top
  
 
 Post subject:
PostPosted: Tue Jun 28, 2011 5:41 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
As it is hard to say what is a "correct" exposure, I'd not say that one lenses has a more exact aperture mechanism than the other. What I see is some variance in the effect of stopping down which even might come from the body. The only thing that is not influenced by the aperture mechanism is the exposure measured wide open (after making sure that indeed the aperture stays wide open). And in this case the 50/1.4G gives indeed an exposure that is 2/3 EV brighter wide open than the 50/1.8G.

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jul 03, 2011 7:54 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
My review is nearing completion. I've submitted it to Gordon for final editing/approval. But so far I can tell you as much: This lens rocks!

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Last edited by Thomas on Sun Jul 03, 2011 8:17 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Sun Jul 03, 2011 7:56 pm 
Cool! I'm eager to read it. Thanks!


Top
  
 
 Post subject:
PostPosted: Sun Jul 03, 2011 8:22 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
Before publication of the review you have access to most of the material that I'll use here.
And you can compare it to some of the results from the AF-S 50/1.4G there.

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 04, 2011 5:53 am 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
And my review is up here.
Enjoy!

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
 Post subject:
PostPosted: Sat Aug 13, 2011 8:41 pm 
Offline
Moderator
User avatar

Joined: Sun Nov 05, 2006 11:08 pm
Posts: 7975
Location: Germany
Und für unsere Deutsch-sprachigen Leser hier.

_________________
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 59 posts ]  Go to page Previous  1, 2, 3, 4  Next

All times are UTC


Who is online

Users browsing this forum: Bing [Bot] and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  

All words, images, videos and layout, copyright 2005-2012 Gordon Laing. May not be used without permission.
/ How we test / Best Cameras / Advertising / Camera reviews / Supporting Camera Labs

Webdesign by Alphabase IT
Powered by phpBB® Forum Software © phpBB Group