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Jupiter-8 50mm minimum focus question
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PostPosted: Fri Dec 09, 2011 12:02 pm    Post subject: Jupiter-8 50mm minimum focus question Reply with quote

Hello, i 'm trying a Jupiter-8 50mm mounted (L39) on a Sony NEX-5 and i'm surprised to see that the minimum focus of 1 m looks more like of a 1,5 m focus.
Is there a way to make closer photos with an additional lens mounted on the Jupiter-8 50?
Also, what other L39-M39 lenses can i use for close photo ? (0,3-0,5m)
Thanks for your answers. Wink
Alex


PostPosted: Fri Dec 09, 2011 12:55 pm    Post subject: Reply with quote

Mine came with a 25mm extension tube for close focusing.


PostPosted: Fri Dec 09, 2011 1:07 pm    Post subject: Re: Jupiter-8 50mm minimum focus question Reply with quote

zedgraphics wrote:
Hello, i 'm trying a Jupiter-8 50mm mounted (L39) on a Sony NEX-5 and i'm surprised to see that the minimum focus of 1 m looks more like of a 1,5 m focus.
Is there a way to make closer photos with an additional lens mounted on the Jupiter-8 50?
Also, what other L39-M39 lenses can i use for close photo ? (0,3-0,5m)
Thanks for your answers. Wink
Alex

L39 lenses are rangefinder lenses which most of them have far MFD. I never saw with such close distance, except macro lens.

I added extension tube for NEX from ebay seller, here's the result (lttle fly)


PostPosted: Fri Dec 09, 2011 2:19 pm    Post subject: Reply with quote

I just checked mine on a G1 with 25mm tube & find the Min.FD to be 22cm/8.5in. subject to sensor.

ISO 200, f16, 1.6s




PostPosted: Fri Dec 09, 2011 4:31 pm    Post subject: Reply with quote

revers wrote:
I just checked mine on a G1 with 25mm tube & find the Min.FD to be 22cm/8.5in. subject to sensor.
ISO 200, f16, 1.6s


Thanks Revers for your explanations Smile Is there Rangefinder lenses with FD less than 1m (without extended tube)?
Thanks again.


PostPosted: Fri Dec 09, 2011 4:35 pm    Post subject: Re: Jupiter-8 50mm minimum focus question Reply with quote

IAZA wrote:
zedgraphics wrote:
Hello, i 'm trying a Jupiter-8 50mm mounted (L39) on a Sony NEX-5 and i'm surprised to see that the minimum focus of 1 m looks more like of a 1,5 m focus.
Is there a way to make closer photos with an additional lens mounted on the Jupiter-8 50?
Also, what other L39-M39 lenses can i use for close photo ? (0,3-0,5m)
Thanks for your answers. Wink
Alex

L39 lenses are rangefinder lenses which most of them have far MFD. I never saw with such close distance, except macro lens.


Do you mean that Rangefinder lenses are not made for close shots?
Thanks again Iaza Wink
Alex


PostPosted: Fri Dec 09, 2011 4:41 pm    Post subject: Reply with quote

There are some. Many of the later lenses focus down to .7 or .8 on the helicoid rf coupled and some down to .5 uncoupled.
For vintage LTM look for a Nikkor 50mm f1.4. It will uncouple at 1m and then focus down to .5 meters.
Later lenses such as the M Mount ZM Biogon 25mm f2.8 will do the same. As will the CV 35mm f1.2.
But why not simply use a less expensive Reflex lens for such work? RF Lenses are not optimized for distances under 1M.
I would search for a Reflex lens with a FLE that compensates for close distance or a Macro lens.


Last edited by F16SUNSHINE on Fri Dec 09, 2011 4:46 pm; edited 1 time in total


PostPosted: Fri Dec 09, 2011 4:44 pm    Post subject: Reply with quote

zedgraphics wrote:
Is there Rangefinder lenses with FD less than 1m (without extended tube)?


yes there are.. the Voigtländer 1.4/40 Nokton has a FD of 0,7m and for the 4/25 Color Skopar it's only 0,5m

http://www.voigtlaender.de/cms/voigtlaender/voigtlaender_cms.nsf/id/pa_asan6m4dvt.html

http://www.voigtlaender.de/cms/voigtlaender/voigtlaender_cms.nsf/id/pa_fdih7ptja8.html


PostPosted: Fri Dec 09, 2011 5:47 pm    Post subject: Reply with quote

Tubes are not expensive & add much versatility to the lens you have. Check out this link:


http://www.ebay.com/sch/?_nkw=m39%20extension%20tube&clk_rvr_id=294045959131


PostPosted: Sun Dec 11, 2011 11:07 pm    Post subject: Reply with quote

You also have this (expensive) solution
http://sonyalphanex.blogspot.com/2011/07/helicoid-leica-m-to-nex-e-mount-lens.html


PostPosted: Mon Dec 12, 2011 7:06 am    Post subject: Reply with quote

Phenix jc wrote:
You also have this (expensive) solution
http://sonyalphanex.blogspot.com/2011/07/helicoid-leica-m-to-nex-e-mount-lens.html


Best money you will ever pay for nex adapter Smile

in fact it's the only one I know that knows where infinity is. Not to mention excellent close focus. Only thing it's missing is a lock so you don't accidentally use it when you don't want to.



CF with 28 M mount.