Homemade Lens – Mag Lens

Now I got quite few homemade lenses = call them just a fun camera

lens would be confusing, which one ? — I should call them in their

individual name.   So, the lens here happen to be originated from a

SLR’s view finder magnifier, I name it Mag Lens.  

Unlike the other Fun camera lens which is often omunifocus, this

lens has one focal point, its mean needs to be focused by means of

helicoid or a sort.    And I found a zooming helicoid of a Nikon

compact camera will do the job.   So, I hack-saw out the

helicoid part of the camera from its body frame. (Photo above)

With a test of the lens, I found the lens needs to be mounted 40mm

from the image sensor.   Then, I struggled to mount the helicoid to a

body cap, and to mount the lens into the helicoid.  (The photo above,

middle shows how the position of the fixing screw was marked

on the cap.  🙂  )

With a good extension of the helicoid, the lens can give a focus from

the infinity to the x1 macro.  Though, this lens found to have the

biggest halation among all of my homemade lens.   😀

Since the lens was originally a magnifying lens, the quality of the

macro image was quite good.

(Lens itself was F2.5 —> If I put an iris 5mm = F8, image would be

even better.)

And, it has a fade and dissolve like beautiful out of focus Bokhe !

With its shallow depth of field, a face on the card changes a lot.

This lens was a hit.

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