Register · Search · Software · Join Upload & Sell · Hosting

	Moderated by: Fred Miranda
	Username   Password FM Forum Rules FM Forums | Alternative Gear & Lenses | Join Upload & Sell    Search Used end    Archive 2010 · Samyang 85/1.4 at PZ

Yakim Peled Offline Dedicated FM Upload & Sell: On p.1 #1 · Samyang 85/1.4 at PZ http://www.photozone.de/canon_eos_ff/483-samyang_85_14_5d This is a bit disappointing IMHO. The user reports I heard so far suggested it is at least as sharp as the 85/1.8 but - at least according to this test - it's far off. Happy shooting, Yakim. Feb 08, 2010 at 11:02 AM

Makten Offline Upload & Sell: Off p.1 #2 · Samyang 85/1.4 at PZ Yakim Peled wrote: http://www.photozone.de/canon_eos_ff/483-samyang_85_14_5d This is a bit disappointing IMHO. The user reports I heard so far suggested it is at least as sharp as the 85/1.8 but - at least according to this test - it's far off. I'd say this is a very good reason not to judge image quality from charts and numbers. 2653 lw/ph is very good at f/1.4, but it doesn't say squat about rendering, contrast and other aspects. Feb 08, 2010 at 11:38 AM

cogitech Offline Dedicated FM Upload & Sell: On p.1 #3 · Samyang 85/1.4 at PZ I am convinced they have a bad sample. Look at the wide open corner performance on their graph. Now look a the real wide open corner performance (this is ISO 800. At lower ISOs it would be even sharper): (The best $19 bottle of wine I've ever tasted) Edited on Mar 10, 2010 at 04:31 PM · View previous versions Feb 08, 2010 at 12:34 PM

Yakim Peled Offline Dedicated FM Upload & Sell: On p.1 #4 · Samyang 85/1.4 at PZ The copy issue is always a possibility. That's why I wrote "at least according to this test" in the OP. Also see the 50/1.2 test. Happy shooting, Yakim. Feb 08, 2010 at 12:40 PM

biotar Offline Upload & Sell: Off p.1 #5 · Samyang 85/1.4 at PZ I store great value by the tests on photozone.de. Cogitechs real world sample doesn't give any reason to believe the lens has bad image borders. Has anybody tested this lens for field curvature? Feb 08, 2010 at 01:02 PM

TWoK Offline Dedicated FM Upload & Sell: Off p.1 #6 · Samyang 85/1.4 at PZ Doesn't photozone.de still use a crop camera? If so there's your issue. Feb 08, 2010 at 03:57 PM

cogitech Offline Dedicated FM Upload & Sell: On p.1 #7 · Samyang 85/1.4 at PZ biotar wrote: Has anybody tested this lens for field curvature? A local member (I forget who now, maybe Tim/trumpetguy) noticed some significant field curvature when doing some landscape testing a while back. This certainly could account for the disparity between PZ.de results and my real-world sample. In other words, my sample is in focus, and their testing of the corners (while it may have been in focus in the centre) was not. While this is a lens aberration, it may also be positively contributing to other aspects of the lens' drawing style. Feb 08, 2010 at 03:58 PM

cogitech Offline Dedicated FM Upload & Sell: On p.1 #8 · Samyang 85/1.4 at PZ TWoK wrote: Doesn't photozone.de still use a crop camera? If so there's your issue. No, it was tested on a 5DII. Feb 08, 2010 at 03:59 PM

TWoK Offline Dedicated FM Upload & Sell: Off p.1 #9 · Samyang 85/1.4 at PZ cogitech wrote: TWoK wrote: Doesn't photozone.de still use a crop camera? If so there's your issue. No, it was tested on a 5DII. I'm glad to hear they finally got something with a 24X36 sensor. Feb 08, 2010 at 04:09 PM

Vertigo2020 Offline Upload & Sell: On p.1 #10 · Samyang 85/1.4 at PZ The Samyang 85's performance is top notch. The main caveat with the lens is focus shift. At f2.8 the lens makes a considerable shift in the focus rearward. If you shoot at f1.4 you'll be fine, maybe even f2. At f2.8 and above you have to use your DOF preview button to focus or your gonna be way off. I believe there's some curvature of field also but I'm no expert on the subject. Perhaps someone else can map it for us. I might add...I think the focus shift is the reason some have made claims the lens gets worse as it's stopped down. If you don't refocus as you stop down the images will appear to deteriorate. Feb 08, 2010 at 04:31 PM

brainiac Offline Dedicated FM Account Locked p.1 #11 · Samyang 85/1.4 at PZ Vertigo2020 wrote: The Samyang 85's performance is top notch. The main caveat with the lens is focus shift. At f2.8 the lens makes a considerable shift in the focus rearward. If you shoot at f1.4 you'll be fine, maybe even f2. At f2.8 and above you have to use your DOF preview button to focus or your gonna be way off. I believe there's some curvature of field also but I'm no expert on the subject. Perhaps someone else can map it for us. I might add...I think the focus shift is the reason some have made claims the lens gets worse as it's stopped down. If you don't refocus as you stop down the images will appear to deteriorate. So be sure to get the Nikon version! Feb 08, 2010 at 04:47 PM

cogitech Offline Dedicated FM Upload & Sell: On p.1 #12 · Samyang 85/1.4 at PZ My Canon version has no auto-aperture, so I have no issue with focus shift. I simply select my aperture (between 1.4 and 4), focus and shoot. No chance of focus shift at all. Feb 08, 2010 at 04:55 PM

brainiac Offline Dedicated FM Account Locked p.1 #13 · Samyang 85/1.4 at PZ cogitech wrote: My Canon version has no auto-aperture, so I have no issue with focus shift. I simply select my aperture (between 1.4 and 4), focus and shoot. No chance of focus shift at all. Thanks - I learned something. Feb 08, 2010 at 04:56 PM

cogitech Offline Dedicated FM Upload & Sell: On p.1 #14 · Samyang 85/1.4 at PZ OK, who are you and what have you done with Richard? Feb 08, 2010 at 04:59 PM

brainiac Offline Dedicated FM Account Locked p.1 #15 · Samyang 85/1.4 at PZ cogitech wrote: OK, who are you and what have you done with Richard? Richard was just a temporary arrangement. The cranial transposifaction is now complete. Leica M8 and 12 versus 21 Mpixel 100% crop comparisons rock! Can't wait to show you my graduated ND bird and cat shots! I feel somehow... liberated! Feb 08, 2010 at 05:28 PM

Vertigo2020 Offline Upload & Sell: On p.1 #16 · Samyang 85/1.4 at PZ I suppose I should have qualified my statement as a auto-aperture Nikon user. Feb 08, 2010 at 05:29 PM

Makten Offline Upload & Sell: Off p.1 #17 · Samyang 85/1.4 at PZ cogitech wrote: I am convinced they have a bad sample. I'm not convinced. Pure resolution is not what the Samyang does best, and your example shows that. It's more about local contrast. The "bad" corner performance could also be because of curvature of field. Feb 08, 2010 at 05:30 PM

biotar Offline Upload & Sell: Off p.1 #18 · Samyang 85/1.4 at PZ cogitech wrote: biotar wrote: Has anybody tested this lens for field curvature? A local member (I forget who now, maybe Tim/trumpetguy) noticed some significant field curvature when doing some landscape testing a while back. This certainly could account for the disparity between PZ.de results and my real-world sample. In other words, my sample is in focus, and their testing of the corners (while it may have been in focus in the centre) was not. While this is a lens aberration, it may also be positively contributing to other aspects of the lens' drawing style. This says enough for me. I'm glad that it is only field curvature. Something I can work with on a MF lens. If it were a WA lens I'd be more alarmed -edit: Richard was just a temporary arrangement. The cranial transposifaction is now complete. Leica M8 and 12 versus 21 Mpixel 100% crop comparisons rock! Can't wait to show you my graduated ND bird and cat shots! I feel somehow... liberated! Now this worries me Feb 08, 2010 at 06:14 PM

trumpet_guy Offline Dedicated FM Upload & Sell: On p.1 #19 · Samyang 85/1.4 at PZ cogitech wrote: biotar wrote: Has anybody tested this lens for field curvature? A local member (I forget who now, maybe Tim/trumpetguy) noticed some significant field curvature when doing some landscape testing a while back. This certainly could account for the disparity between PZ.de results and my real-world sample. In other words, my sample is in focus, and their testing of the corners (while it may have been in focus in the centre) was not. While this is a lens aberration, it may also be positively contributing to other aspects of the lens' drawing style. See here: http://www.fredmiranda.com/forum/topic/832704/5?keyword=rokinon,field,curvature#7787583 There is major field curvature on this lens, though I only noticed it at long distance shooting. In my mind this lens is excellent for close-in work, near wide open. That seems to be where it is optimized for. For other shooting, I still prefer the Zeiss C/Y 85/2.8 Sonnar. It seems that Samyang has given us a one-trick or two-trick pony, if you will, but those tricks are very impressive for such an inexpensive lens. More expensive lenses are more "refined" but at this price you can afford to have some tools in the toolbox that do only one or two things very well. Feb 08, 2010 at 06:20 PM

wayne seltzer Offline Upload & Sell: On p.1 #20 · Samyang 85/1.4 at PZ The other review of this lens at Lens-tip also confirms lower resolution in the corners but at least they acknowledge center frame results wide open that easily beat Zeiss and Nikkor. Paul, do you have a picture of the wine bottle taken in the center of the frame to see the difference between center and edge of frame resolution? I still think this lens wide open beats my 85L wide open due to better contrast and also less CA and smoother bokeh. Forgot the link to that review: http://www.lenstip.com/166.4-Lens_review-Samyang_85_mm_f_1.4_Aspherical_IF__Image_resolution.html Edited on Feb 08, 2010 at 08:40 PM · View previous versions Feb 08, 2010 at 07:18 PM

Jim Schemel Offline Dedicated FM Upload & Sell: On p.1 #21 · Samyang 85/1.4 at PZ If you were Canon or Nikon and heard about this great lens that sells for near $300 new and is as good as your $1600 lens would you possibly be motivated to "influence" the reviews by others of the cheaper lens -Jim Feb 08, 2010 at 07:23 PM

cogitech Offline Dedicated FM Upload & Sell: On p.1 #22 · Samyang 85/1.4 at PZ Wayne, no I only shot the one posted, specifically to demonstrate corner performance. Feb 08, 2010 at 07:37 PM

cgiff Offline Upload & Sell: Off p.1 #23 · Samyang 85/1.4 at PZ If you need a test to tell you if one lens is sharper than another, and even then it's up for debate, isn't the whole point kind of moot? Then again, if that were the case I guess this forum would be a lot quieter. Feb 08, 2010 at 09:11 PM

trumpet_guy Offline Dedicated FM Upload & Sell: On p.1 #24 · Samyang 85/1.4 at PZ cgiff, Your point is well taken. There is value, however, in knowing what specific areas a lens excels or disappoints in; thus, the forum is filled with posts scrutinizing 100% crops. But yes, most of what you need to know can be seen from a single well-crafted image of reasonable size. This is the thing about the Samyang/Rokinon/etc.: For what most people want a large aperture 85mm lens for, this lens excels for a small fraction of the cost of competing options. Feb 08, 2010 at 09:52 PM

JimU Offline Upload & Sell: Off p.1 #25 · Samyang 85/1.4 at PZ are photozone final judgements useful at all? half the time I wonder if they even consider anything other than their sharpness measurements in their final judgement. Feb 09, 2010 at 04:23 PM

	FM Forums | Alternative Gear & Lenses | Join Upload & Sell end

You are not logged in. Login or Register

Username   Password   Lost your password?