Reversing lenses for macro photography on Canon EOS systems

I have a Canon 70-200 F4 (67mm thread) and a third party 50mm (55mm

thread). I would like to mount the 70-200 on the camera and use a step

down adapter (67mm to 55mm) and a reversing ring (55mm) to attach the

reversed 50mm lens to it.

 

Is this an acceptable set up for macro? Has anyone had any experience

with this set up? Is there anything that I am missing? What kind of

magnification can I get?

 

Thanks

Vinay

I haven't used this Canon setup but my hunch tells me that you are going to get severe vignetting. The 70-200 isn't designed to work with just the middle 55 mm area and so the rest of it is going to come into view.

 

<p>Even with my Vivitar 100/3.5 and the Nikkor 50/1.8 combo which requires me to step up from 49 to 52mm, I get vignetting. Of course, the vignetting might be reduced if you are using a dslr because of the crop factor.

 

<p>Also, a prime lens might be better suited for this application - preferable one with a much smaller filter thread size.

 

<p>-A

I would recommend trying a diopter filter if you're looking to experiment with macro using your 70-200mm f/4 L.

 

I have a 70-200m f/4 L and a Nikon 5T diopter which I use with a 67-62mm step down ring, which allows me to get to roughly 1/2 life size. If you wanted more magnification, the Nikon 6T filter would get you close to life size. They're relatively inexpensive at around $50, and provide excellent image quality.

 

Here's a couple threads discussing the 5T and 6T.

 

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=009XBw

 

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=009Jsh

 

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=009B4G

 

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=008tnf

 

Hope this helps!

 

Sheldon

Try it for yourself by holding and/or taping the 50mm in place (with something that won't leave a bunch of residue, like that blue stuff painters use). Determine the magnification by looking through the rig at a ruler. I suspect that you'll find the setup fun but of very limited application.

I would think you would need a wider lens to get higher magnifications. If you are considering such a setup you might look into link below. An adapter by NovoFlex that permits open aperture metering and even AF! Seems way cool to me ...

 

<P>

<a href="http://www.novoflex.de/english/html/co_ema.php">http://www.novoflex.de/english/html/co_ema.php</a>

If it is of any help, I made an electonic reversing ring for EOS about 10 years ago and published in AP - Novoflex copied the idea and now manufacture one. I use mine for excellent macro up to 4x lifesize with the 50 mm f1.8 standard lens. You can use really cheap old bellow and still get full auto iris control and metering. It is well worth making one!

2 Andrew Stevens:

Can you tell in detail about the electonic reversing ring for EOS cameras? What's minimal distance of focusing in different magnifications?

Is it http://www.novoflex.com/english/html/products.htm > Macro Accessories > Reverse Adapter for CANON EOS?