Click On The Icons To See Our Pages

Get Updates Straight To Your EMail!


February 20, 2017: Modding the Helios 44-2 58/2 and M42-Nikon Adapter

Modding the Helios 44-2 58/2 and M42-Nikon Adapter
Modding the Helios 44-2 58/2 and M42-Nikon Adapter



February 20, 2017

The first copy of my lens, I used it with an M42-Nikon adapter without optical glass. What I did was to add a little piece of metal under the rear glass of the lens so that it would raise up and be closer to my D5200's sensor when mounted. That way, we can achieve focusing to infinity. (Google 'flange distance' for more info.)

This time with my second copy of this lens, I hoped to achieve focusing to infinity with another method -- using an M42-Nikon adapter with optical glass. I thought my problem would be over in a snap, but this method only introduced unexpected problems that made the first method more feasible.

First problem with the adapter? The rear flange of the lens hit a part of the metal that holds the glass inside the adapter. As a result, I can only turn to focus ring to 4 meters. I had to file off about 1mm from the lens and adapter. After doing so, the lens can now turn to the infinity mark.

A new problem is introduced. At the infinity mark, the lens can focus farther than using an adapter without glass. But now it can only focus at 5 meters farthest. So the solution I can think of? Resort to method 1 and put a metal under the rear glass of the lens so it would raise up and get closer to the sensor.

Which defeats the reason that I bought an M42-Nikon adapter with optical glass (for infinity), which costs twice than an M42-Nikon adapter without glass. We're going around in circles. Do you understand my problem now?

For now, let's just leave it as it is. At 5 meters of focusing distance, it's still a useful range for portraiture.

If nothing else works, I can always switch to Canon DSLRs, which have a shorter flange distance and won't have a problem using M42 mount lenses like this Helios 44-2 58mm f/2.



========================================

Nikon D5200
Helios 44-2 58mm f/2 (KMZ)
M42-Nikon Adapter (with infinity glass)

All sample photos here are unedited/raw, shot at f/2.

Modding the Helios 44-2 58/2 and M42-Nikon Adapter
Painting the edges of the glass with black paint should help improve image quality a bit.

Modding the Helios 44-2 58/2 and M42-Nikon Adapter
Hard work doing manual filing of the parts.

Modding the Helios 44-2 58/2 and M42-Nikon Adapter
After shaving off about 1mm from both the flange of the lens and the adapter's protrusion, the lens can now focus to infinity without any obstruction.

Modding the Helios 44-2 58/2 and M42-Nikon Adapter

Modding the Helios 44-2 58/2 and M42-Nikon Adapter

Modding the Helios 44-2 58/2 and M42-Nikon Adapter

Modding the Helios 44-2 58/2 and M42-Nikon Adapter
With the focus ring at infinity, this is how far it can focus with the mod.
Still needs improvement!



# # # E N D # # #

0 comments :

Post a Comment

 

About me

The Nikon D5200 as my weapon of choice.

Vintage lenses are my poison.

Kindly hit on the blue CONTACT button at the lower right corner of this page to get in touch for collaboration.


Google+ Followers

FB Feed

Blog Archive

Contact Form

Name

Email *

Message *