NikonGear'23

Gear Talk => Lens Talk => Topic started by: Andy on March 17, 2016, 00:04:39

Title: Focal comparison 16-200mm
Post by: Andy on March 17, 2016, 00:04:39

Nice comparison how lenses with different focal lengths project the 3d space into an 2d image plane
http://giphy.com/gifs/lens-focal-comparsion-l2JJu55Y2LSvkbBqo

Andy

Title: Re: Focal comparison 16-200mm
Post by: Bjørn Rørslett on March 17, 2016, 00:14:31

Or, impact of perspectives.

Title: Re: Focal comparison 16-200mm
Post by: Andy on March 17, 2016, 00:23:25

Correct :)

I just read Haruo Sato's article about the future of lens design at Nikon and he used the 3d/2d description what lenses actually do.
http://www.nikkor.com/technology/02.html

Title: Re: Focal comparison 16-200mm
Post by: Jakov Minić on March 17, 2016, 00:52:07

Andy, what a wonderful article. Thank you for sharing it with us!

Title: Re: Focal comparison 16-200mm
Post by: JJChan on March 17, 2016, 14:18:07

Quote from: Andy on March 17, 2016, 00:23:25

I just read Haruo Sato's article about the future of lens design at Nikon and he used the 3d/2d description what lenses actually do.
http://www.nikkor.com/technology/02.html

Andy
Thanks for the link.

Sato: 'We created a lens that is extremely capable in regards to creating point images on point, one of the key ideas of the Noct-NIKKOR design.'

Here is shot at medium to long distances with Noct showing this effect. I'm not sure how the new AFS58mm would render this but I think that this effect is what he is referring to?

JJ

Title: Re: Focal comparison 16-200mm
Post by: Frank Fremerey on March 17, 2016, 15:17:58

Sat0's article makes me want to own one of these. I also want to buy a 45 PC an I already got some lenses in the 50/60 domain. I hope I do not end as a collector...

Title: Re: Focal comparison 16-200mm
Post by: Jakov Minić on March 17, 2016, 17:09:29

I am extremely sorry that Mr Koichi Ohshita is not developing F-mount lenses any longer because the two that he did develop the 85/1.4D and the 45/2.8P are my favorite ones.

Title: Re: Focal comparison 16-200mm
Post by: Jørgen Ramskov on March 17, 2016, 17:23:38

Nice gif, quite a big difference it makes.

Title: Re: Focal comparison 16-200mm
Post by: Bjørn Rørslett on March 17, 2016, 18:05:02

Please observe what is shown is actually the influence of perspective, not focal lengths per se.

Title: Re: Focal comparison 16-200mm
Post by: Chip Chipowski on March 17, 2016, 18:55:07

Bjorn, can you explain your comment re perspective?  I thought perspective remained the same when changing focal length. 

Title: Re: Focal comparison 16-200mm
Post by: Bjørn Rørslett on March 17, 2016, 19:23:45

Here the person is depicted at the same size for each focal length. Thus camera has moved and accordingly, perspective is changed.

If the camera standpoint remains unchanged, perspective of course also is constant. However, in that case, detail magnification is proportional to focal length.

Title: Re: Focal comparison 16-200mm
Post by: Chip Chipowski on March 17, 2016, 19:38:51

Aha - thanks for the explanation!