Macro focussing rails

Started 4 months ago | Questions thread
mawyatt2002 Contributing Member • Posts: 502
Re: Macro focussing rails

John K wrote:

mawyatt2002 wrote:

Ive used the Stackshot, WeMacro and MJKZZ older type rails & controllers. The Stackshot is the most versatile and the WeMacro best value. Never used the MJKZZ rail because at that time the controller didn't support a Mac, later a controller was offered which didn't require a computer and works well, but the rails were bypassed because better rails were available. All the rails can be operated with different controllers if you prepare a proper interface cable to the stepper motor (they all use 4 wire steppers), and setup the proper motor parameters.

Later developed custom rails based on the THK KR20, 15 and 26 surplus linear rails. These are precision devices and can be operated with various controllers, including a set of custom developed controllers based upon the Trinamic chips that offer exceptional performance.

Eventually this evolved into Stack & Stitch setups, below shows some of the THK rails and custom controllers. Much has been posted on these developments over at the mentioned Photomacrography site.


Horizontal setup on modded WeMacro Stand and THK KR20 focus rail

Vertical setup shown in back.

Excellent post, and your wife has taken some impressive photos!

If I ever get into stacking, beyond doing it hand held, I'm gonna do it right and get a microprocessor controlled rail. But I'm more interested in stacking larger subjects (like bees and beetles, for example).

Agree a computer controlled stage is the best approach IMO.

If you are interested in larger subjects like your bees, then you'll likely be around 1X. The old Nikkor PN105mm F2.8 reproduction lens on a FF camera is about as good as it gets at 1X. This lens was used to reproduce 35mm film for movie theaters, so highly optimized for 1X. This lens is shown on the horizontal setup above.


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