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Canon mp-e equivalent with MF lenses ?
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PostPosted: Mon Dec 22, 2008 6:33 pm    Post subject: Reply with quote
Perhaps zoom a reason , perhaps wide angle try at 50 or use a fix lens.


PostPosted: Mon Dec 22, 2008 7:00 pm    Post subject: Reply with quote
It is - of course - not advisable to use a zoom lens as a front diopter.
This actually is what the reversed lens in front of a longer lens does.
As Attila just mentioned, a high magnification may be achieved using
a reversed wide angle lens in front.


PostPosted: Mon Dec 22, 2008 8:39 pm    Post subject: Reply with quote
kds315* wrote:
koji wrote:
Hi Peter,

Mount the longer lens first to your camera, reverse (mount/attach) to
shorter focal length lens on the top. So simple magnification is

long-local-length / short-focal-length

in his example is 200 / 50 = 4 time magnification if the main
lens at the tele-end.

You have to find a female-to-female ring to attach the lenses
each other at the front, this is the most difficult thing. Very Happy Very Happy


ehemm....it is a male - male ring and they can be found on ebay quite easily,
here Click here to see on Ebay for instance in various sizes / combinations.
"macro coupler rings" they are usually called.
If you tried the female then I know why you find it so difficult... Wink Wink


Oooops, yes male-male ring! Laughing


PostPosted: Mon Dec 22, 2008 10:15 pm    Post subject: Reply with quote
first samsung gx 1s dslr than kenko macro tc than its af lens 50-200mm than exaktar 55 1.4 reverse you put all on a table than you try to find somwhere 100 ,150,200
at af lens than make the aperture of zoom suitable for DOF than open the exaktar 1.4 and make the exposure B than use timer 20,30 sec shutter
and than when you are waiting you pray the GOD ...

Last edited by dr.volkan on Mon Dec 22, 2008 10:27 pm; edited 1 time in total


PostPosted: Mon Dec 22, 2008 10:18 pm    Post subject: Reply with quote
dr.volkan wrote:
first samsung gx 1s dslr than its af lens 50-200mm than exaktar 55 1.4 reverse you put all on a table than you try to find somwhere 100 ,150,200
at af lens than make the aperture of zoom suitable for DOF than open the exaktar 1.4 and make the exposure B than use timer 20,30 sec shutter
and than when you are waiting you pray the GOD ...

20-30secs? Then we need a dead or frozen bug Smile


PostPosted: Mon Dec 22, 2008 10:22 pm    Post subject: Reply with quote
yalcinaydin wrote:
dr.volkan wrote:
first samsung gx 1s dslr than its af lens 50-200mm than exaktar 55 1.4 reverse you put all on a table than you try to find somwhere 100 ,150,200
at af lens than make the aperture of zoom suitable for DOF than open the exaktar 1.4 and make the exposure B than use timer 20,30 sec shutter
and than when you are waiting you pray the GOD ...

20-30secs? Then we need a dead or frozen bug Smile


Some glue...


PostPosted: Mon Dec 22, 2008 10:23 pm    Post subject: Reply with quote
the shot of butterfly(found dead on kemerburgaz street in istanbul)
i did not use such a big magnification on alives but it is a good idea maybe you can it..

this is alive but not a such magnification

Last edited by dr.volkan on Mon Dec 22, 2008 10:38 pm; edited 1 time in total


PostPosted: Mon Dec 22, 2008 10:31 pm    Post subject: Reply with quote

this is shot with 16 mm zenitar and kenko macro tc


PostPosted: Mon Dec 22, 2008 10:40 pm    Post subject: Reply with quote
Amazing too!!


PostPosted: Tue Dec 23, 2008 12:08 am    Post subject: Reply with quote
Thanks Koji and Klaus. It's beginning to make sense, the rest I can do by trial and error. Smile


PostPosted: Tue Dec 23, 2008 12:56 pm    Post subject: Reply with quote
kds315 wrote:

ehemm....it is a male - male ring and they can be found on ebay quite easily,
here Click here to see on Ebay for instance in various sizes / combinations.
"macro coupler rings" they are usually called.
If you tried the female then I know why you find it so difficult... Wink Wink


Hi Klaus,

Do you happen to know a decent source of female-female coupling rings? For a few of my weirder projects (putting other lenses in front of a Novoflex PiGriff C is one, using a Novoflex Eos Retro ring with helicoids to make a sturdy variable Eos autotube is another) these would come in handy. Getting a mini-lathe or finding a decent machine shop around seem to be the best solutions I found so far.


PostPosted: Tue Dec 23, 2008 1:28 pm    Post subject: Reply with quote
BTW Eric, I've used quite a number of these techniques and there are a few things to consider when you want to use them in the field:

- working distance

Depending on your subject matter this may be very important. Live butterflies above a certain temperature for instance tend not to appreciate lenses and cameras within a few millimeters distance. An interesting table of reproduction ratio and working distance can be found at:

http://www.eritja.com/a_mater.htm

As you would expect, longer focal distances allow more room between lens and subject. Reversed wide angle SLR lenses allow relatively decent working distances at high magnifications. Note that relatively decent in this case means about 5 cm at 5:1.


- automatic aperture

Again, depending on your subject matter this may be a dealbreaker for you. Most easy and cheap ways of getting to high magnifications mean you lose auto aperture. Chasing moving critters at max aperture and closing it before taking the shot can be done, but is rather challenging. Reversing lenses in front of an auto-aperture lens on your camera retains auto-aperture, as does reversing an EF lens with the Novoflex Eos Retro ring or home-built equivalent.

There are manual focus lenses around with equal or better IQ at 5:1 magnification than MP-E, such as the Macro-Nikkor 65/4.5 and S-Orthoplanar 60/4. Unfortunately, these are less easy to use and even more expensive, assuming you can find one.


PostPosted: Tue Dec 23, 2008 2:24 pm    Post subject: Reply with quote
dickb wrote:
kds315 wrote:

ehemm....it is a male - male ring and they can be found on ebay quite easily,
here Click here to see on Ebay for instance in various sizes / combinations.
"macro coupler rings" they are usually called.
If you tried the female then I know why you find it so difficult... Wink Wink


Hi Klaus,

Do you happen to know a decent source of female-female coupling rings? For a few of my weirder projects (putting other lenses in front of a Novoflex PiGriff C is one, using a Novoflex Eos Retro ring with helicoids to make a sturdy variable Eos autotube is another) these would come in handy. Getting a mini-lathe or finding a decent machine shop around seem to be the best solutions I found so far.


Dick,

as mentioned in my contribution, ebay is a good source since they come cheap from China now. If you want better ones, heliopan has them in their list at about 3...4x the price.

Cheers,


PostPosted: Tue Dec 23, 2008 2:33 pm    Post subject: Reply with quote
kds315* wrote:
dickb wrote:
kds315 wrote:

ehemm....it is a male - male ring and they can be found on ebay quite easily,
here Click here to see on Ebay for instance in various sizes / combinations.
"macro coupler rings" they are usually called.
If you tried the female then I know why you find it so difficult... Wink Wink


Hi Klaus,

Do you happen to know a decent source of female-female coupling rings? For a few of my weirder projects (putting other lenses in front of a Novoflex PiGriff C is one, using a Novoflex Eos Retro ring with helicoids to make a sturdy variable Eos autotube is another) these would come in handy. Getting a mini-lathe or finding a decent machine shop around seem to be the best solutions I found so far.


Dick,

as mentioned in my contribution, ebay is a good source since they come cheap from China now. If you want better ones, heliopan has them in their list at about 3...4x the price.

Cheers,


Klaus,

Thanks for replying. I am looking for female-female coupling rings, as I mentioned. These are hard to find on ebay. I haven't seen them listed with Heliopan, but maybe I didn't look closely enough.

Cheers


PostPosted: Tue Dec 23, 2008 3:45 pm    Post subject: Reply with quote
Hi Dick,

Female-female ring is easy to make, just get two normal step up rings
of your filter sizes and glue together. You may have to file down a bit
if threaded side or sides to glue.

Male-male ring is slighty difficult to make, since their non-threaded
front is normally very narrow/thin so that two different size rings
wont meet each other precisely to glue. You have to be very
inventive to glue two step up rings at their front sides.


PostPosted: Tue Dec 23, 2008 3:59 pm    Post subject: Reply with quote
I tried putting a 50/2 in front of a 135/3.5 and it had amazing reproduction ratio... but the working distance is tiny ( < 20mm ) which will not do for bugs. Will a longer lens in front give a bigger working distance?


PostPosted: Tue Dec 23, 2008 4:03 pm    Post subject: Reply with quote
koji wrote:
Hi Dick,

Female-female ring is easy to make, just get two normal step up rings
of your filter sizes and glue together. You may have to file down a bit
if threaded side or sides to glue.

Male-male ring is slighty difficult to make, since their non-threaded
front is normally very narrow/thin so that two different size rings
wont meet each other precisely to glue. You have to be very
inventive to glue two step up rings at their front sides.


Hi Koji,

Thanks. I tried that once, and it wasn't quite as sturdy as I wanted. The limited contact surface of the rings I used and the type of glue (don't know exactly which one it was, not loctite) were probably the cause. Which adhesive would you advise for such a job?


PostPosted: Wed Dec 24, 2008 9:54 pm    Post subject: Reply with quote
Not an MF shot, indeed full AF set Smile
Canon 5D + Canon EF 28-135 IS USM + Canon EF25*
no crop, F:16, 1/125, 1:1 MACRO @28mm, 7MB JPG file:
http://www.flickr.com/photos/yalcinaydin/3133379341/


* I've bought it for 20USD! It was described as not working, givving error, I'm a lucky guy I guess Very Happy


PostPosted: Fri Dec 26, 2008 5:33 pm    Post subject: Reply with quote
I've had some luck with Zuiko 50s, a 25mm extension tube I made out of a $10 bargain bin teleconverter, and a 430EX:









PostPosted: Sat Dec 27, 2008 5:53 pm    Post subject: Reply with quote
Mike Deep wrote:
I've had some luck with Zuiko 50s, a 25mm extension tube I made out of a $10 bargain bin teleconverter, and a 430EX:









Those were made with a 50 mm lens and a 25mm extension tube ?

Those pics are fantastic !
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