"New " old Nikon 20 mm f4

<p>Hard to focus,but is is ok?</p><div></div>

<p>Really hard, like impossible to tell. The original scan is from a Noritsu mini lab scanner, probably a basic 1000x1500 pixel scan. At least half of the resolution of the lens disappeared in the scanning process.</p>

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<p>Focusing a 20mm lens on a 35mm camera is pretty trivial because your hyperfocal distance is pretty short. Just set yourself to f/8, focus distance three meters, and things will be just fine unless you try to shoot something that's less than a meter and a half away.</p>

<p>I believe that the late Galen Rowell used that focal length version within the Nikon 20mm versions.<br>

I have that lens along the earlier 20mm F3.5 UD and both are sharp and easy to use. The 20mm F4.0 is a bit harder to view due to its maximum aperture of 4.0. Its compactness and lighter weight makes up for this dimness.</p>

 

<p>I used to have the Nikkor UD 20mm f3.5. It focused well up close but focused further away things were always a tiny bit soft in comparison. Great lens though.</p>

<p>At web resolution, it looks fine. If you printed it huge... I don't know :)</p>

<p>Best to post a link to a larger scan, Photo.net tends to blur a lot of photos in the forums.</p>

<p>I have this lens. Nice and sharp but viewfinder shows strong light falloff (due to the small rear element). I have a small gallery here <a href="../photodb/folder?folder_id=876410">http://www.photo.net/photodb/folder?folder_id=876410</a> which may interest you.</p>

<p>I have the non-AI Nikkor 20mm f/4 (52mm filter size). It is one of my favorite lenses which I still shoot a lot on my Nikon equipment. Alas, it has a projection of unknown (but probably rear lens protection) function on the back that means it won't fit on 35mm sensor Canon digital cameras, or I'd use it even more.<br>

Never had a problem on mine with sharpness, even without considering the considerable depth of field.</p>

<p>It's just not possible to make judgments on a finer level from a 700 pixel-wide shot of the whole image, and <em>anything</em> will look fuzzy at pixel-peeping 100% blowups.</p>

<p>I have this lens also and have used it on my Canon 5D extensively. I covered the rear element well and used a dremel to reduce the height of the rear lens protector to clear the mirror. Works fantastic and with my OM Olympus 24mm f/2.8, it covers all my wide needs.</p>