Other Extreme Macro Lenses

by Johan J Ingles-Le Nobel
Last updated August 31, 2017


Very few camera manufacturers take extreme macro photography seriously, which means we have to be creative.

Extreme macro lenses come from in all shapes and sizes, with different optics being repurposed for extreme macro on a continuous basis.

The JML Optical 21mm f/3.5 used for extreme macro

JML Optical 21mm f/3.5, an outstanding optic for extreme macro.

The Image Circle and You

Whilst we're trying to be creative and looking for great optics to use for extreme macro, there's a complication that must be taken into consideration from the outset, namely your image circle. The image circle of a lens is the area over which the image is good.

For full frame a lens must have an image circle larger than 43.27mm, and for a 15 x 22.5 mm APSC frame, an image circle of at least 27.04mm.

This complicates matters looking for an extreme macro lens because a lens might produce great quality but the image circle is too small to use. The flipside is that cameras with smaller sensors will enjoy a wider choice than APSC or fullframe.

20mm microfilm lens

20mm microfilm lens, mounted using a spare objective adapter. Finding an adapter for an unusual optic can be problematic, so I used a double sided rubber tape from the motor industry round the lens, which allowed it to be screwed into the adapter nicely.

Microfilm Lenses

Back in the day, a microfilm reader was a device used for reading of documents stored as microform. Microform includes flat film, microfilm, aperture cards, microfiche, and ultra fiche - all ways to store documents in a small space.

A microfilm reader is used in projecting and viewing to magnify tiny microfilm images to readable proportions: microfilm reader lenses are therefore interesting.

Good photography lenses out there have lp/mm values of a bit over 100, but microfilm reader lenses can go up to 400 lp/mm. Microfilm reader lenses are therefore an obvious avenue to pursue in the quest for a budget price, high resolving high magnification optic.

Cine Lenses

H. Lou Gibson reports that a reversed 25mm f/1.9 Cine Ektar II works very well at high magnifications

Although I have not used these myself, allegedly cine lenses work well extreme macro. I have seen the following in use: 20mm Zuiko, 13mm Cine Nikkor, Cine Ektar II, Macro Switar & Kern. The cine lenses have to be reversed to work properly for extreme macro. In the Kodak Publication N-12B "Photomacrography" H. Lou Gibson reports that a reversed 25mm f/1.9 Cine Ektar II works very well at high magnifications. According to online tests, a reversed 25mm f/1.9 Cine Ektar II shows a better performance than a 25mm f/3.5 Luminar, when set at f/2.8, between 10:1 and 20:1 magnifications.

This should not be too surprising. After all, cine lenses are made with the intent that the image is going to be blown up for projection a lot more than camera lenses, so they have to have some oomph. In terms of their use, be aware that cine lenses are often engraved in t/stops rather than f/stops. Whilst an f/stop is the mathematical representation of what the design is supposed to be delivering in terms of light transmission, a t/stop is determined by actual measurement, so it is more of a real world representation.

CCTV Lenses

The vast majority of cameras used in security that are already in place are standard NTSC cameras, 640 x 480 pixels. Resolution is therefore not a priority, and CCTV lenses are currently not recommended for extreme macro.

CCTV lenses are currently not recommended for extreme macro. No doubt this will change over time

No doubt this will change over time, but in the testing I've seen of CCTV lenses used for extreme macro the results were very poor. This is obviously a bit disappointing with cheap CCTV lenses are flooding eBay. But they're cheap for a reason and this technology can only be expected to improve.

Industrial Lenses

Numerous optical techniques are used throughout industry and are critical to the manufacture of such diverse and basic products as semiconductor chips, roads, tunnels, and chemicals. These are high quality optics that the average photographer will not come into contact with undoubtedly contain very interesting optics for extreme macro.

Sometimes surplus industrial optics do become available, and one example of this is the JML Optical 21mm f/3.5

Information technology, telecommunications, healthcare, life sciences, security, defence, industrial manufacturing: each of these sectors has bespoke optical requirements and there is a network of specialised optics providers that caters for these making optics that could very well be repurposed for extreme macro. However, these optics, being low production units, tend to be extremely expensive and out of the budget of all except the most enthusiastic of extreme macro photographers.

Sometimes surplus industrial optics do become available, and one example of this is the JML Optical 21mm f/3.5 of which a consignment became available in 2010. This lens was quickly picked up by the extreme macro crowd and from its original surplus price listing of $5 on eBay, it now trades hands between macro enthusiasts at prices in the region of $400 US. This is a wide-field, high-resolution optic, in the same league as the Photar 25mm f/2 and the Mitutoyo 5x NA 0.14, and is better than the Olympus 38mm f/2.8.

Other Lens Avenues

There really is no reason to stick to the usual lenses in the quest for extreme macro. For example, eyepiece optics can also be used, which although they may not give you the pixel peeping resolution that the best optics will provide, will nevertheless give many hours of entertainment and could help you decide if extreme macro is for you. Do beware though, that adapters may be tricky to find for unusually repurposed optics.

Canon Mp-e 65

The Canon Mp-e 65 is the only consumer lens that can be zoomed between 1:1 and 5:1. However, this is a Canon-mount lens, and cannot be fitted to other mounts, which is obviously problematic if you do not use Canon! There are various approaches to duplicating the Mp-e65, one such approach is mine, dubbed the Mp-e 64.

Comments (7)

Article: Other Lenses
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Alisonp says...
Very good website with many interesting articles! I do macro photography of fungi, and am looking for more extreme than 1:1. The MPE-65 is out of my price range, but there is a new kid on the block competing with that lens — the Laowa 25mm macro does 2.5x to 5x macro. It is not yet available in the US where I live, but I have read that it is available in other countries, early reviews and comparisons with the MPE-65 look good, and I am very excited to try it. Do you know about it? Know anyone who has tried it? Will you be trying it and writing about it? Comes in several lens mounts - Canon, Nikon, Pentax, and Sony, I think.
Yes it looks good - don't have one myself so not able to test it, sorry!
5th June 2018 4:39pm
Harold Gough says...
The MPE-65 is about to have a rival/replacement. The fully manual Laowa 25mm f/2.8 2.5x - 5 x macro may be launched next month. No price or full specification has been announced.
8th February 2018 7:17pm
Harold Gough says...
I have had mine since May 2018 but a cold spring, followed by a sustained drought, meant I didn't get to use it much until the autumn, continuing some work during the winter.

I had some doubts as to how useful it might be to me, as I already had lenses, with or without high performance supplementaries which covered my required magnification range.

Laowa said the the shot focal length (25mm) would give a similar advantage to a wide angle lens in the non-macro world.This has proved to be the case, enabling me to get single frame images which I thought would require focus stacking.

My main camera body for macro is the m4/3 Olympus EM-1. As with all lenses, the x2 crop sensor makes the Laowa effectively a 50mm. Using it on my full frame Sony Alpha A7r restores the 25mm performance and gives even better dept effect.
13th January 2019 4:28pm
Petrochemist says...
Whilst browsing e-bay for objectives I came across a number of c-mount lenses designed for digital microscopes. These promise good working distances ~100mm at reasonable magnifications such as 0.7x to 4.5x (despite the auction title) http://www.ebay.co.uk/itm/180X-360X-Zoom-C-mount-2X-Objective-Barlow-Lens-For-Industry-Microscope-Camera/311768719713?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

Some of the cameras they sell for these are now 16MP so they should be better than CCTV lenses...

Any thoughts on these? I doubt they'll cover my MFT camera sensor, but they should connect up OK.
2nd February 2018 1:43pm
Peter Mobbs says...
I recently found this old article on the web http://www.gyes.eu/photo/x-macro.htm - it describes the use of projection eyepieces with camera lenses to give a system in which the magnification can be varied without much affecting the object to lens distance. I have just made a setup in which a projection eyepiece (Reichert PK10X) is housed at the camera end of a bellows. It can be used with either a finite microscope lens at the appropriate tube length at the far end, or with a camera lens. The camera is backed off from the eyepiece with extension tubes (~35mm). The results from reversing the camera lens (Nikon 50mm 1:1.8D) look pretty good and varying the distance between this lens and the eyepiece gives quite nice results up to 6 - 7 X. The object to lens distance depends on the extension of the bellows but is long for the magnification. Apart from the web reference above, I haven't read anything much about this approach....are there serious downsides???
9th July 2015 4:10pm
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