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M42->MAF Adapter With Focus Confirmation

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miravisu View Drop Down
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Post Options Post Options   Quote miravisu Quote  Post ReplyReply Direct Link To This Post Topic: M42->MAF Adapter With Focus Confirmation
    Posted: 04 August 2014 at 23:27
Placed an order on the 15th of June for an M42-a/MAF Focus Confirm Adapter M42-L1, received shipping notification on the 25th of July, and received delivery notice and fetched item on the 28th of July. Suspect possible backorders to catch up on and summer time is adding to the more lengthy shipping time to Sweden? :)

Took some fiddling (I first screwed the lens in the wrong direction >_<) but finally figured out how to attach/connect adapter and M42 (Takumar 50/1.4) lens. That red dot on the adapter/lens side is tiiiiny alright!

And ohboy, (what I assume) is) the AF stuff is really.. noisy, 'til one gets things right. The camera can make a lot of noise as it powers down too, hm. However, one should keep in mind this Konica Minolta 7D is suffering from first frame issue (every now and then) and one of the reasons I plan to keep this lens as a permanent one.

I have no idea if I got things right in regards to settings otherwise, I simply like to click and go but this setup will force me to at least eye the taken photo every now and then ;) yet quite content with photos so far and will keep experimenting, but I think I will need an ND-filter. Collage of ensemble can be found here.
 



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htccjansen View Drop Down
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Post Options Post Options   Quote htccjansen Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2014 at 20:20
A couple of weeks ago I ordered a M42 --> Sony Alpha adapter with multiple data chip.
In a little more than 2 weeks I received the adapter (the Netherlands).

On several forums I read that some adapters there might be an infinity focus problem.
Well, mine had also this problem, but the problem is quite easy to solve with one sheet of sandpaper (type 400).

It took me about 20 minutes to sand the adapter down enough.
During sanding I had a lenscap on the adapter to protect the contacts and the chip.

The adapter is solid build from brass (messing) and sanding was no problem at all.
After sanding I cleaned the adapter and wetted some teflonspray on the sanded brass.
This brass adapter feels a lot more stable than my cheap aluminium adapter without chip.

The adapter from mr. James Lao works very well with all my (old but fast and good) M42 lenses and infinity focus is no problem after sanding.

Switching between the programmed focal lengths is easy.
Just press shortly the "Lens Release Button" and the camera advances to the next programmed focal lens. You can see / check this on camera display.

The camera (Sony A65) remembers the last selected focal length so it's not neccessarry to select the focal length again as long as you don't change lens.

Focus confirm (the green square) works fine, and I guess that the in-camera image stabilisation works also, but I don't now how to test it to be sure...

Before ordering the adapter I had contact with mr. James Lao. He replied quickly to a question I had.

I'm very happy with my M42 --> Sony Alpha adapter !
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2014 at 21:46
Originally posted by ifreedman ifreedman wrote:

That sounds about right. I'm not sure how much wrong IS would affect things. It might make it a bit worse, or it might not do as good of a job. In theory a 135mm lens would need more IS than a 50mm lens, so it would undercorrect I think. But turn of IS and you'd be fine.


Just for the record, there should be no need to turn off IS if your chipped FL is less than your real FL - you just get partial cancellation of shake.

Example 1: chip FL = 50mm, lens FL = 100mm. You get half cancellation which is one stop benefit. ok!

Example 2: chip FL = 200mm, lens FL = 100mm. You get 2x compensation which means shake is as bad as without it. Turn off IS.

Example 3: chip FL = 400mm, lens FL = 135mm. shake is much worse than without it. Unusable with IS on.

If you had a 100mm chip setting and a 135mm lens, you should get a couple of stops improvement.

But I don't quite see why you'd bother with the chip unless you wanted the IS - the focus confirm isn't that useful if you set focus peaking, and (I think) the peaking works at all apertures if the light is bright enough.
A900, A58, 5d, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2014 at 21:35
I've received one of James Lao's chipped adapters a few weeks ago, and had no problems with delivery or with e-mail conversations. Mine has the 6-pin contact though it is a single version (400mm f5.6).

I have had some troubles with it, though. Occasionally when I take a picture, it takes two and then freezes with an error message. I have to remove the camera battery to reset it and it then may or may not do the same again.

Not sure what the cause is, but I wonder if it is connected with the fact that the adapter doesn't always fit onto the camera smoothly - sometimes it doesn't want to go on at all.

I also had some trouble getting it off an M42 teleconverter when it *really* didn't want to come off (the rotating section on the TC just spun instead). I felt that the cause was the high-friction matt finish on the adapter, so I rubbed the surface down gently with a piece of soft wood (!) and haven't had that trouble since.

But when it's working it works well - AF confirm light, FL display, and IS does work.
A900, A58, 5d, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Velocina View Drop Down
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Post Options Post Options   Quote Velocina Quote  Post ReplyReply Direct Link To This Post Posted: 19 November 2013 at 01:37
Thanks for the reply to my previous post: now I've to investigate which is the purpose of the sixth contact on the chip, probably a fixed voltage supply, indepenndent from the main switch on the camera, that is always connected to the positive lead of the battery: I suspect this because of the fact that the change of setup of my four lenses chip is done depressing the lens release button on the camera when the power on switch is in "OFF" position and the memory (CF and/or Memory stick )activity led is estinguished. In this condition the usual "+" supply pin to the lens (one of the basic five ones) is disconnected from battery, but the chip changes setup..... and this is very strange if the camera don't supplies it curent... From this the suspect of the purpose of the sixth pin on James Lao "programmable" adapters.
Your single lens one probably does not need this supplementar pin ( never changes setup, so processing without power supply isn't required), but make the same printed board for both chip kinds is simpler than two. Probably the two adapters differ themselves only in the firmware programmed into.

Bye.

Luca ("Velocina")
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Lesuave View Drop Down
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Post Options Post Options   Quote Lesuave Quote  Post ReplyReply Direct Link To This Post Posted: 17 November 2013 at 22:45
I bought a single lens chip. I prefer having the ring always attached to the lens so next time I'm buying a M42 lens, I'll order a new adapter.
I'm new in M42 lenses. I bought a cheap Helios 58mm f2 as I was fascinated by the swirly bokeh.
Really funny to focus with the focus ring and then to depress the shutter button to have the focus confirm.
To answer your question, the chip has 6 contacts.
 



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Velocina View Drop Down
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Post Options Post Options   Quote Velocina Quote  Post ReplyReply Direct Link To This Post Posted: 16 November 2013 at 23:25
Good !
I've waited three weeks from Honk-Kong to Italy, but Italian Custom is the bottleneck.....
Only for statistics, the chip you've bought from James Lao is a single or four lens type ?
I've bought from him a four lens type with AF function enableb to rechip a rare Sigma 1.6X Multiconverter, that now makes some old manual lenses AF ones: the chip has 6 contacts, not five, nor eight: it is a bit strange....
How many contacts has your chip ?

This is mine AFC-L4B chip, which I've requested with 150f4, 200f4, 300f3.5 and 500f4 lenses programmed inside: I use the Sigma Multiconverter with three Adaptall-2 Tamron lenses: SP 90/2.8 Macro (#72B), SP 180/2.5 (#63B) and 300/2.8 (#360B) with good IQ on my A700:
the Multiconverter makes these lenses AF ones and the A700 adds stabilization too.



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Lesuave View Drop Down
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Post Options Post Options   Quote Lesuave Quote  Post ReplyReply Direct Link To This Post Posted: 16 November 2013 at 12:19
Luca, this is the correct email address.
I received the adapter yesterday. Only five days from Hong-Kong to Guadeloupe. Eight years ago I would have waited 3 months ! This planet becomes smaller each day.
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Velocina View Drop Down
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Post Options Post Options   Quote Velocina Quote  Post ReplyReply Direct Link To This Post Posted: 11 November 2013 at 16:11
Ok,
now we know that almost the PayPal address ( reshg@sina.com , please correct me if it isn't the right one ) is working.

Bye.

Luca ("velocina")
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Lesuave View Drop Down
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Post Options Post Options   Quote Lesuave Quote  Post ReplyReply Direct Link To This Post Posted: 10 November 2013 at 13:50
Well at least I received this morning an email from paypal saying the adapter has been shipped.
Maybe this conversation with Velocina helped.

Ciao.
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Velocina View Drop Down
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Post Options Post Options   Quote Velocina Quote  Post ReplyReply Direct Link To This Post Posted: 08 November 2013 at 23:33
Hi Lesuava,
As I remember, the address

reshg@sina.com

was good both for PayPal than to communicate with James Lao. I've had several contacts with him do decide the best data to put into a "four lens AF chip for rechipping" to put into a Sigma AF 1,6X Multiconverter.
The last time I wrote to James Lao was after received the chip, 2nd August 2013.

I've found somewere on Internet this additional info:


************************************************************************

James Lao
About &
Contact
email: james@jameslao.com U.S. citizen
phone: (503) 863-9219
home address: campus address:
2767 NE Roberts Ave. Carnegie Mellon University, SMC 2249
Gresham, OR 97030 5032 Forbes Ave.
Pittsburgh, PA 15289
I have strong programming, design, and problem solving skills. My interests include
distributed systems and robotics. I'm looking for a full-time position.
Education Carnegie Mellon Pittsburgh, PA
Bachelor of Science in Computer Science
 Expected graduation date: May 2012
 GPA: 3.60
Professional
Experience
Apple Inc. Cupertino, CA
Software Engineering Intern, iOS Location Summer 2011
Amazon.com Seattle, WA
Software Development Engineer Intern Summer 2010
My project involved developing scalable Java web services and a Ruby on Rails front-end.
After I nished my project, I helped develop and test the order ful llment software the
team was responsible for. I used agile development and TDD techniques.
Vernier Software & Technology Beaverton, OR
Programmer Summers 2007 { 2009
I worked on a wide variety of projects ranging from internal tools to customer-facing
websites and applications. Two examples of things I worked on are a solar panel data
collection/reporting web application and a part defect tracking tool.
Other
Experience
Open Source WordPress Development
 Category Posts Widget (150K downloads, featured in WordPress Top Plugins book)
 Simple Video Embedder (86K downloads)
Programming C, C++, Objective-C, Java, Scala, Ruby, Python, Standard ML, PHP, SQL, JavaScript,
HTML, CSS
Software Mac OS X, Linux, Windows, Eclipse, Vim, Emacs, Xcode, Git, SVN, Adobe CS
Awards Spring 2011 Dean's List
2007 Oregon Student Technologist of the Year
2007 & 2008 Oregon SkillsUSA Web Design Champion
Course Work Distributed Systems, Machine Learning, Probability Modeling, Game Theory, Computer
Graphics, Robotic Manipulation, Feedback and Controls, General Robotics

************************************************************************

The schedule was originally a .pdf document.

I've had no response on @hotmail by James Lao, but every time I wrote him on the others adresses I've waited for days an answer, but he answered me every time.

Bye.

Luca
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Lesuave View Drop Down
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Post Options Post Options   Quote Lesuave Quote  Post ReplyReply Direct Link To This Post Posted: 08 November 2013 at 12:12
Thanks for this info Luca. I'm trying the hotmail address.
jameslao.com seems to be another person.
Tell me, did you get any reply before or after receiving the adapter ?
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Velocina View Drop Down
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Post Options Post Options   Quote Velocina Quote  Post ReplyReply Direct Link To This Post Posted: 07 November 2013 at 20:05
to Lesuave:

I've experienced some troubles in the past contacting James Lao.

If it cans help, I've ordered a custom chip on
http://eadpt.com/eadpen.htm
and payd it using PayPal ( like you, I suppose).
The PayPal address was:
reshg@sina.com
to:
Lixin Tian

I wrote directly to James Lao here:
james@jameslao.com

I've tried another E-mail too, this one:
tianlx@hotmail.com
.... but this last one seems to be inactive.

Don't worry about answering delays: I've experienced periods of two weeks without replies.... but the chip was then delivered and I'm happy with it.

Bye.

Velocina
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Lesuave View Drop Down
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Post Options Post Options   Quote Lesuave Quote  Post ReplyReply Direct Link To This Post Posted: 07 November 2013 at 12:18
Sorry to hijack this thread but I don't where to post this.
One month ago I ordered a chipped M42 adapter from James Lao website and paid with paypal.
I got no news since. I mailed James through dyxum PM and other email addresses I found but still got no answer.
Has anyone bought from him recently ?
Is there another reliable provider selling chipped M42 adapters ?

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