Jump to content

Welcome to NikonForums.com
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. If you already have an account, login here - otherwise create an account for free today!
Photo

Nikkor 85mm 1.8g really soft wide open?


  • Please log in to reply
3 replies to this topic

#1
devc0de

devc0de

    New Member

  • Forum Member
  • Pip
  • 1 posts
  • Country Flag

Hi

 

Just recently purchased a brandnew 85mm 1.8g lens for my d3400.

Just starting using the lens and I can notice how soft or sometimes miss focused it is wide open.

 

Tried using it at f2.8-f4 and somehow getting more sharper photos. I also make sure that may shutter speeds are fast enough to counter camera shake. 

 

May I know if this is a common issue with this lens? or any tips on how I can resolve this?

 

Had the shop where I bought it from check it and they indicate that the lens is fine.

 

Any help or suggestions would be appreciated. 



#2
Merco_61

Merco_61

    Nikonian

  • Premium Member
  • PipPipPipPipPipPipPipPip
  • 7,545 posts
  • Country Flag
  • LocationUppsala, Sweden

Site Supporter

You probably need to fine-tune the AF as your lens and camera both are within tolerance, but at opposite ends of the tolerance span. Unfortunately, the D3400 doesn't have AF fine-tune. If I am right, the misfocus is always either in front of or back of the correct focus plane. When you close the aperture down, the DOF increases, masking the misfocus. Call Nikon and ask if they can calibrate both camera and lens for you and what it will cost.



#3
Nikon Shooter

Nikon Shooter

    Nikonian

  • Forum Member
  • PipPipPipPipPipPipPipPip
  • 2,372 posts
  • Country Flag
  • Location: French Canadian living in Central Europe

You probably need to fine-tune the AF …


+1.

I have the 85 ƒ1.4G too and it is sharp as hell!
My bodies all have onboard fine-tuning.



#4
Ron

Ron

    Nikonian

  • Forum Member
  • PipPipPipPipPipPipPipPip
  • 1,542 posts
  • Country Flag
  • LocationMagic City

I have the AF-S 85mm f/1.8 and it's a very sharp lens. On a DX camera such as the D3400 it's angle of view is about 127mm or so which makes it a good short to medium telephoto lens and excellent for head and shoulder portraits.

 

I agree with the sentiment that your copy is probably in need of AF focus adjustment which is apparently not user serviceable on the D3400. To confirm this I would try comparing two images ... one taken with AF and the other taken with manual focus. If you're able to obtain satisfactory results with manual focus then the problem is most likely an AF fine tune adjustment problem. 

 

--Ron