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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Tue Apr 23, 2013 12:46 pm Post subject: DIY converted M42 Canon FL Zoom 55-135mm f/3.5 used on 50D |
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ferrick wrote:
Registration distance of Canon FL lenses is too short to be used on DSLR cameras. Since this lens was purchased at very low price, I therefore ventured to DIY converting it into a M42 lens.
The method is simple. I used a saw to cut away approx 1cm rear metal part of the lens. Then I removed the levers that control the aperture blades (it does not affect the functioning of the aperture ring). Thereafter, I fixed a M42 extension tube into the rear of the lens by using a suitable size rubber ring (originally for use by water pipes). It's done!
The only issue is the nearest focusing distance of the lens was 2M. I unscrewed the screw that limited the turning of the focusing ring. Now the focusing ring can turn half more round, allowing the lens to focus at a shorter distance of 80cm.
Let's see how a FL lens performs on a mordern Canon 50D DSLR camera!
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Lloydy
Joined: 02 Sep 2009 Posts: 7785 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Tue Apr 23, 2013 4:52 pm Post subject: |
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Lloydy wrote:
that was an accurate cut with the hacksaw! great job, and some lovely pictures. I guess the price of FL lenses is about to rocket up ? _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Wed Apr 24, 2013 12:53 am Post subject: |
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ferrick wrote:
Lloydy wrote: |
that was an accurate cut with the hacksaw! great job, and some lovely pictures. I guess the price of FL lenses is about to rocket up ? |
thank you for viewig and the appreciation! |
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Schnauzer
Joined: 09 Apr 2008 Posts: 2155 Location: Maine, USA
Expire: 2012-03-08
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Posted: Wed Apr 24, 2013 1:08 pm Post subject: |
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Schnauzer wrote:
It worked out great for you. Nice.
I have this lens also and love it on my FD cameras. _________________ Ron |
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clockwork247
Joined: 23 Dec 2010 Posts: 79
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Posted: Wed Apr 24, 2013 2:16 pm Post subject: |
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clockwork247 wrote:
do you have pictures of the conversion? this sounds very cool. |
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drjs
Joined: 25 Feb 2013 Posts: 485 Location: USA
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Posted: Wed Apr 24, 2013 2:29 pm Post subject: |
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drjs wrote:
Please post a pictorial. It would be interesting to see some before and after images of the mount. _________________ Follow me on 500px |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Wed Apr 24, 2013 2:30 pm Post subject: |
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ferrick wrote:
Schnauzer wrote: |
It worked out great for you. Nice.
I have this lens also and love it on my FD cameras. |
Thank you! |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Wed Apr 24, 2013 2:33 pm Post subject: |
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ferrick wrote:
clockwork247 wrote: |
do you have pictures of the conversion? this sounds very cool. |
This is what it looks like after conversion. Since I had not pictured the lens before the conversion, so I cannot show you waht it looked like beforehand.
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Wed Apr 24, 2013 2:34 pm Post subject: |
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ferrick wrote:
drjs wrote: |
Please post a pictorial. It would be interesting to see some before and after images of the mount. |
This is what it looks like after conversion. Since I had not pictured the lens before the conversion, so I cannot show you waht it looked like beforehand.
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ManualFocus-G
Joined: 29 Dec 2008 Posts: 6624 Location: United Kingdom
Expire: 2014-11-24
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Posted: Wed Apr 24, 2013 2:53 pm Post subject: |
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ManualFocus-G wrote:
Ouch _________________ Graham - Moderator
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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clockwork247
Joined: 23 Dec 2010 Posts: 79
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Posted: Wed Apr 24, 2013 5:15 pm Post subject: |
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clockwork247 wrote:
ferrick wrote: |
clockwork247 wrote: |
do you have pictures of the conversion? this sounds very cool. |
This is what it looks like after conversion. Since I had not pictured the lens before the conversion, so I cannot show you waht it looked like beforehand.
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i see what you did there, literally just hack off the old mount and glue on the new one lol, but it worked, so no problem there.
I think this can be done with other mounts too, the only issue i see is mirror hitting on lens that when focus to infinity moves back too much. |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Wed Apr 24, 2013 10:13 pm Post subject: |
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ferrick wrote:
[quote="clockwork247"]
ferrick wrote: |
clockwork247 wrote: |
do you have pictures of the conversion? this sounds very cool. |
i see what you did there, literally just hack off the old mount and glue on the new one lol, but it worked, so no problem there.
I think this can be done with other mounts too, the only issue i see is mirror hitting on lens that when focus to infinity moves back too much. |
No mirror hitting problem at inifinty focus since the flange of the lens was moved back several mm (i.e. lenghten the flange distance). |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Wed Apr 24, 2013 10:15 pm Post subject: |
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ferrick wrote:
ManualFocus-G wrote: |
Ouch |
I know it looks ugly but I just did what I have to do in order to make this old lens works on modern DSLR camera. |
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philslizzy
Joined: 07 Aug 2012 Posts: 4748 Location: Cheshire, England
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Posted: Thu Apr 25, 2013 1:34 am Post subject: |
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philslizzy wrote:
Does it focus on infinity? as I dont see any long distance shots _________________ Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official. |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Thu Apr 25, 2013 12:23 pm Post subject: |
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ferrick wrote:
philslizzy wrote: |
Does it focus on infinity? as I dont see any long distance shots |
Yes, it does, and well beyond infinity! It 's my habit that I like taking macro instead of landscape pictures. Here is a picture at medium range.
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philslizzy
Joined: 07 Aug 2012 Posts: 4748 Location: Cheshire, England
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Posted: Thu Apr 25, 2013 11:42 pm Post subject: |
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philslizzy wrote:
so well done on your conversion. _________________ Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official. |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Fri Apr 26, 2013 1:42 pm Post subject: |
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ferrick wrote:
philslizzy wrote: |
so well done on your conversion. |
Thanks! |
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Bille
Joined: 03 Jan 2013 Posts: 381
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Posted: Fri Apr 26, 2013 3:03 pm Post subject: |
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Bille wrote:
ferrick wrote: |
Yes, it does, and well beyond infinity! It 's my habit that I like taking macro instead of landscape pictures. |
Not sure about what you are saying... Did you really expand the focusing range? |
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Bille
Joined: 03 Jan 2013 Posts: 381
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Posted: Fri Apr 26, 2013 3:05 pm Post subject: |
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Bille wrote:
ferrick wrote: |
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Terrible conversion. |
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ferrick
Joined: 20 Apr 2012 Posts: 643 Location: Hong Kong
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Posted: Fri Apr 26, 2013 3:22 pm Post subject: |
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ferrick wrote:
Bille wrote: |
ferrick wrote: |
Yes, it does, and well beyond infinity! It 's my habit that I like taking macro instead of landscape pictures. |
Not sure about what you are saying... Did you really expand the focusing range? |
Yes! With old Canon FD/FL mount lens, one can only achieve macro but cannot achieve infinity focus on all non-mirrorless cameras due to the shorter flange to sensor distance of the lens. If you want to achieve inifinity focus, you either use an adapter with glass element (but it will reduce image quality) or cut away a portion of the rear part of the lens (effectively increasing the flange to sensor distance of the lens) as I did. Sure my conversion looks very ugly. However, I don't care as long as it works and takes good pictures. |
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