Close-up Lens on EF-Macro Lens

Well, those top two photos were taken by Canon EF Macro 100mm F2.8 Lens alone.

This Macro lens has internal focus system and it will be focused down to the life-size.

 For general macro work,  it is convenient to use though, for me,  life-size is often just

not close enough.  So that I specially made additional Proxer / Close-up lens my self.

As I detailed in the post, By using the Proxer, the Lens can close to  x2 size, and

in addition, it creates almost phenomenal out-of-focus Bokhe.

The Bokhe created by this additional lens looks almost like Air-blush Graphic work.

Still, since this Proxer was made out of the front element of a Zoom Lens, it got double

lens Achromatic construction, no Chromatic aberration was appeared and the focused

image is quite sharp, corner to corner, even when the lens aperture was fully open.

All those photos, except top two,  F-aperture was set to F2.8 and the Camera was

set to AV mode.  Auto focus does work though, as the nature of this kind of

close-up work, I used manual focus.   

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Ultra heavy Proxer — Close-up Lens from TV Zoom

Those photos were taken by Zeiss 85 mm F 1.4 lens, with my handmade Proxer was

attached to it.  The Proxer = Close-up lens was  in fact, a front element of a Canon

TV-Zoom lens which I’ve cannibalized from a broken lens.  (hence cost nothing  😉 )

As the original lens was a very expensive TV  lens,  it has a very high-quality

Achromatic lens.  ( Even ED glass may have used in its construction.)

In most of the case, it is not very difficult to disassemble the lens —– in this case,

after unscrew 14 small screws, the front Lens was disengaged from its focusing helicoid.

—– then it was glued to a 67 mm filter ring.  (filter glass was removed beforehand)  

Front-element of this lens works as a close-up lens, hence with 85 mm lens it act like

a life-size Macro converter.  —– And with large 1.4 F-aperture, it gives very shallow

depth of field. (and very big Bokhe ! — Still, the focused image itself is quite sharp ! )

——(Metric ruler was shot in 45 degree.  Left: F1.4  /  Center: F2.8  /   Right: F5.6)

Though, this 3 cm thick solid glass in a solid metal helicoid is really heavy, almost

the same weight of 85 mm lens itself.   😀 

(The photo above :  Left was taken F1.4,    but Right photo was F5.6 )

(In those photos, look at how the single hair of fluff was captured on F 1.4  

= Please click and enlarge twice)

As you can see from the photos above, off-focused Bokhe is a bit too much for

most of the people’s taste though, that is what I’ve been after.

(This effect couldn’t be mimicked by PS ! ) 

—– to get this effect, I tried many Soft Focus lenses, Filters, Pinhole Photo,

Double-density Pinhole, even Double Focus in Double exposure.  

But there is no sharp core in a Pinhole photo, and the Double exposure has

the trouble to keep the subject exactly in the same position etc etc.  

= After many many years of attempt,  now I think, I got what I wanted.  

Only a problem is, this TV-Zoom Proxer gives only life-size close-up image.  

May be I need to find another lens which got longer focal length.  😀

Still, it’s a start.

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Ultra Proxer — Recycled from Old zoom lens

Proxer is an old name to call Close-up lens which attach on front of the lens.  

The lens I’m talking here is a front lens element  I’ve scavenged from an old zoom lens 85~210 mm F 3.8,  sold under many different names —– the photo was in the previous post (first photo, Front lens was near the left end).

Most of the close-up lens consist simple convex, single meniscus lens mounted on a filter frame.   Same idea to put a magnifier before camera lens and take close-up  photo.  It was convenient to have a small adapter lens to take closer picture, as in the old days there was no such things like a macro setting on the Primary lens (Standard lens).  

—– To make a high-performance Proxer,  I did some cut and bonding works with epoxy glue, which was worthwhile to create a treasure out of junk.  🙂 

Photo left :  Don’t hesitate to hack-saw a lens barrel.  Once disassembled and the glass was removed, even a precision optical device, is a piece of metal.   = What it used to be is only in your mind.  On this moment you are dealing the work to create something new.  What required here is a careful but very simple and boring push and pull work.  😀  

Center photo :  To the front lens, hack-sawed front barrel (which got 58mm  filter screw )  was screwed back and a filter ring was bonded to its rear side with epoxy glue.  

Photo right :  The finished close-up lend was attached on the front of the Canon EF 100 mm  Macro lens, which also has  58 mm filter size.

You might be wondering,  while having macro lens already, and having a skill to use the lens in reverse etc.  = all sorts of close-up trick, why do I need to have yet  another close-up lens. —– well, all of my Macro lenses were down to the life-size, in other words, they take a picture of  36mm x 24mm is the closest.  I simply wanted to close a bit more.  (My attention tend to go rather small things.  🙂 )

—– And a real intention was to have much more exaggerated out of focus Bokhe.  (I’m tired with clear images which is everywhere and too easy to come by today.)     

Photo left :   With this close-up lens, when the master lens,  100 mm Macro lens was set to the infinity,   a small dole (36 mm tall) looks like this. (taken F 2.8)

Center Photo :  With close-up lens, when the Master Macro lens was set to the life-size, it produces  x2 larger image (dole’s head is 10mm).   Have look the Bokhe in F 2.8 = max open).  (This Bokhe is quite close to the Olympus Zuiko 50 mm F 2 Macro lens ! )  

Photo right :  A small beetle who happen to came to my room (it’s too hot these days,  the window was fully open) this photo was taken with a bounced flash-light with F 11.

Unlike most of the Proxer, this home-made close-up lens has double lens chromatic structure,  and fully coated. = Think, a cost of common cheap Proxer, and a Front lens which is the most crucial part of the lens structure in a  zoom lens.  

= Difference of quality is obvious.     As you can see it in those sample photos.  

A photo of a moth parched on the wall in my room, taken by EF 100 mm Macro with the handmade Proxer. = With F 2.8 the depth of focus is really shallow still, in the focused area, the image is very sharp.

This is a test shot of the screen of a Tablet (a photo of my umbrella).  This close-up lens maintained very high quality of the image = Very even, corner to corner.  And this is at F 2.8 ! (See details, by click it, and again)

Left photo is Macro lens alone and about  1/2 size.   Right photo is, with close-up lens but Master lens was set to Infinity.   Hence this combination can take photo from infinity to  1/1  and with this Proxer to  x2.  (By the way, Canon 5D mk-III has dreadful red-color cast when ISO was set to 6400.   In AWB and in any setting.  Though, at  ISO 100 much better.  = See the photos below)

(Photo left :  5D but Mk-II.   Photo Right :  The ISO setting was  100  = Much better !)(Those are hand-held photos = only for Color reference.)  To be fair,  I show you the photos by Nikon D810’s color  in similar setting.

(Photo Left :  Nikon D810 — ISO 3600    Photo Right :  Same but ISO 100   Both with Micro Nikkor 55mm F3.5 — 1/2 )

Higher ISO setting mean, very low out-put of image sensor has to be amplified electronically to its limit.    While amplifying to such extent, still linearity has to be maintained, while the out-put of each BGR may not having exactly the same character.

= Can of warm is opened.  🙂   In the same time, higher amplification also amplify the noise as well.  

—– I admire and praise  the people who managed it and brought the benefit of very high ISO setting even if it was not (yet) perfect.

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