63/2.8 El-Nikkor Test -2nd image added

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NikonUser
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Joined: Thu Sep 04, 2008 2:03 am
Location: southern New Brunswick, Canada

63/2.8 El-Nikkor Test -2nd image added

Post by NikonUser »

Just received a used 63/2.8 El-Nikkor enlarger lens. Ran a quick test with a Deer Fly face.
With my current set up this lens will give me from about 2.4 - 4.8 x mag on the D90 sensor.
At present I have no time to run a full test but will do so later this year.
Anyone know what the optimum f-stop is for this lens at this mag. range?

D90 ISO 100, 63/2.8 @ f8, 0.05mm frames, ZS PMax of fine large JPG's.
Top image: full frame height, sides cropped
Bottom: 800 px selection of actual pixels.

Quality good but lens appears not to be quite as sharp as the 50/2.8 @ f/6.7.

Image
Image
Last edited by NikonUser on Thu Jun 04, 2009 11:57 am, edited 1 time in total.
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
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Charles Krebs
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Post by Charles Krebs »

NU,

I never did a rigorous test, but my 63/2.8 seems to have nearly identical performance to the 50/2.8. I doubt that I could tell them apart from the results.

As with the 50/2.8 the f5.6 to f8 range seems to be best. (At at 4.8X I'd use it closer to f5.6, f8 is getting a little small for best resolution at this mag).

Great eyes on that critter!

NikonUser
Posts: 2629
Joined: Thu Sep 04, 2008 2:03 am
Location: southern New Brunswick, Canada

Post by NikonUser »

Thanks Charles.
I forgot to mention that the full face image is about a 3.5x mag on the D90 sensor.
I did do a re-shoot of the face with the 50/2.8 @ about f/6.7 (1/2 way between 5.6 & 8) but didn't manage to get the lighting identical.
800 px selection below; you can see that the pollen grains and the "fur" are a bit sharper.
I like the little bit of extra WD I get with the 63/2.8 and will try it in the future @ f/5.6.

This is Chrysops mitis a very common and wide ranging NA species.

Image
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives

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