Help on using leica lens on pentax k-r

vass · 03-09-2013, 04:08 PM

I just got a leica summar 50/2. I want to use it on my pentax k-r. Please suggest a suitable adapter with infinity focus capability. It'd be great to suggest me, where to get the adapter. I found few adapters in eBay, but they're incapable of infinity focus. Any help on this highly appreciate.
Thanks in advance,

lytrytyr · 03-09-2013, 04:37 PM

Originally posted by vass

I just got a leica summar 50/2. I want to use it on my pentax k-r. Please suggest a suitable adapter with infinity focus capability. It'd be great to suggest me, where to get the adapter. I found few adapters in eBay, but they're incapable of infinity focus.

You would need an optical adapter to get infinity focus,
because the mount of the K-r is too far from its sensor
for the Summar to get infinity focus there.

But optical adapters are not recommended,
they'd spoil the IQ of the Leica lens.

There are some great Pentax lenses you can use instead,
like the M50/1.4 or M50/1.7.

vass · 03-09-2013, 04:55 PM

That's disappointing! I got already M50/1.7/1.4 but want to try leica because of its reputation. Anyway, thanks for your quick response.
Can I use M42 and M39 adapters together to serve the purpose get it done?
Regards,

Steinback · 03-09-2013, 05:29 PM

An M42 adaptor and an M39 adapter will let you use the lens for macro and close focus photos; that's how I use my M39 enlarger lenses on SLRs. You may be able to focus on objects up to a few feet away.

I'm not very familiar with the mechanics of collapsible Leica lenses. If you can use it partially collapsed that may allow focus at greater distances, with a substantial risk of running the rear of the lens into the camera's mirror and damaging both.

Generally mirrorless bodies like the Sony NEX series, Ricoh GXR with M mount or the Fuji bodies with M mount adapters are recommended for use with Leica lenses. I would be interested in playing around with a collapsible lens on my K-01 (no mirror in the way) but can't justify the cost of the lenses.

lytrytyr · 03-09-2013, 07:02 PM

Originally posted by Steinback

I would be interested in playing around with a collapsible lens on my K-01 (no mirror in the way) but can't justify the cost of the lenses.

Actually, the K-01 doesn't have that much free room inside.
There's an internal hood coning out from the APS-C frame.

vass · 03-10-2013, 02:15 AM

thanks for the suggestions. Can I use any other leica lenses without these problems? If available, I'll sell this lens and go for that lens. Can anybody suggest how much this lens worth?
Thanks,

zapp · 03-10-2013, 05:27 AM

Works...!
Adapter will not work BUT go to LEITAX.com and find a mount replacement.. This is the real solution, probably more expensive than you thought, but it works fairly well.

vass · 03-10-2013, 06:16 AM

Thanks for the suggestion. I'm glad to here that. But do i need to replace the mount with the aforesaid leitax mount? Sorry, I don't have any idea about this leica lenses.
Just gone through the list of adapters in Leitax.com. But again which one to chose for my requirement?
Cheers,

**Kerrowdown** · 03-10-2013, 06:56 AM

Originally posted by vass

leica lens on pentax k-r

After reading through this thread, it's not all gloom and doom, you could always get a Leica to put the Leica lens on

lytrytyr · 03-10-2013, 07:04 AM

Originally posted by zapp

Works...!
Adapter will not work BUT go to LEITAX.com and find a mount replacement.

The only conversions for Pentax DSLRs I see there are the "R" reflex lenses.
This is on the Leitax "Leica for Pentax" page.

stevebrot · 03-10-2013, 11:04 AM

Originally posted by lytrytyr

The only conversions for Pentax DSLRs I see there are the "R" reflex lenses.
This is on the Leitax "Leica for Pentax" page.

This is correct. The Leitax conversion for Leica R is pretty well known and popular. A conversion for Leica M or M39 LTM is simply not feasible (~28mm vs. 45.5mm registration).

Steve

seppstefano · 03-10-2013, 11:56 AM

mounts.htm

Leica has 47.00 mm distance while Pentax 45.46, so there should be some room for an adapter...

hth,
Stefano

stevebrot · 03-10-2013, 12:14 PM

Originally posted by seppstefano

mounts.htm

Leica has 47.00 mm distance while Pentax 45.46, so there should be some room for an adapter...

hth,
Stefano

That is for Leica R. OP has Leica 39 LTM.

Steve

seppstefano · 03-10-2013, 01:15 PM

...oops, I didn't notice it was a Summaron... thank you Steve and sorry for the misinformation.

Stefano

lytrytyr · 03-10-2013, 01:21 PM

Originally posted by seppstefano

...oops, I didn't notice it was a Summaron

Summar (it's f/2)

03-09-2013, 04:08 PM	#1
vass Forum Member Join Date: Dec 2010 Location: Croydon Posts: 59	Help on using leica lens on pentax k-r I just got a leica summar 50/2. I want to use it on my pentax k-r. Please suggest a suitable adapter with infinity focus capability. It'd be great to suggest me, where to get the adapter. I found few adapters in eBay, but they're incapable of infinity focus. Any help on this highly appreciate. Thanks in advance,

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03-09-2013, 04:37 PM	#2
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by vass I just got a leica summar 50/2. I want to use it on my pentax k-r. Please suggest a suitable adapter with infinity focus capability. It'd be great to suggest me, where to get the adapter. I found few adapters in eBay, but they're incapable of infinity focus. You would need an optical adapter to get infinity focus, because the mount of the K-r is too far from its sensor for the Summar to get infinity focus there. But optical adapters are not recommended, they'd spoil the IQ of the Leica lens. There are some great Pentax lenses you can use instead, like the M50/1.4 or M50/1.7.

03-09-2013, 04:55 PM	#3
vass Forum Member Join Date: Dec 2010 Location: Croydon Posts: 59 Original Poster	That's disappointing! I got already M50/1.7/1.4 but want to try leica because of its reputation. Anyway, thanks for your quick response. Can I use M42 and M39 adapters together to serve the purpose get it done? Regards,

03-09-2013, 05:29 PM	#4
Steinback Veteran Member Join Date: Jan 2008 Location: GTA, ON, Canada Photos: Gallery \| Albums Posts: 1,673	An M42 adaptor and an M39 adapter will let you use the lens for macro and close focus photos; that's how I use my M39 enlarger lenses on SLRs. You may be able to focus on objects up to a few feet away. I'm not very familiar with the mechanics of collapsible Leica lenses. If you can use it partially collapsed that may allow focus at greater distances, with a substantial risk of running the rear of the lens into the camera's mirror and damaging both. Generally mirrorless bodies like the Sony NEX series, Ricoh GXR with M mount or the Fuji bodies with M mount adapters are recommended for use with Leica lenses. I would be interested in playing around with a collapsible lens on my K-01 (no mirror in the way) but can't justify the cost of the lenses.

03-09-2013, 07:02 PM	#5
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by Steinback I would be interested in playing around with a collapsible lens on my K-01 (no mirror in the way) but can't justify the cost of the lenses. Actually, the K-01 doesn't have that much free room inside. There's an internal hood coning out from the APS-C frame.

03-10-2013, 02:15 AM	#6
vass Forum Member Join Date: Dec 2010 Location: Croydon Posts: 59 Original Poster	thanks for the suggestions. Can I use any other leica lenses without these problems? If available, I'll sell this lens and go for that lens. Can anybody suggest how much this lens worth? Thanks,

03-10-2013, 05:27 AM	#7
zapp Pentaxian Join Date: Jul 2011 Posts: 2,385	Works...! Adapter will not work BUT go to LEITAX.com and find a mount replacement.. This is the real solution, probably more expensive than you thought, but it works fairly well.

03-10-2013, 06:16 AM	#8
vass Forum Member Join Date: Dec 2010 Location: Croydon Posts: 59 Original Poster	Thanks for the suggestion. I'm glad to here that. But do i need to replace the mount with the aforesaid leitax mount? Sorry, I don't have any idea about this leica lenses. Just gone through the list of adapters in Leitax.com. But again which one to chose for my requirement? Cheers,

03-10-2013, 06:56 AM	#9
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,818	Originally posted by vass leica lens on pentax k-r After reading through this thread, it's not all gloom and doom, you could always get a Leica to put the Leica lens on

03-10-2013, 07:04 AM	#10
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by zapp Works...! Adapter will not work BUT go to LEITAX.com and find a mount replacement. The only conversions for Pentax DSLRs I see there are the "R" reflex lenses. This is on the Leitax "Leica for Pentax" page.

03-10-2013, 11:04 AM	#11
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by lytrytyr The only conversions for Pentax DSLRs I see there are the "R" reflex lenses. This is on the Leitax "Leica for Pentax" page. This is correct. The Leitax conversion for Leica R is pretty well known and popular. A conversion for Leica M or M39 LTM is simply not feasible (~28mm vs. 45.5mm registration). Steve

03-10-2013, 11:56 AM	#12
seppstefano Junior Member Join Date: Jan 2012 Posts: 38	mounts.htm Leica has 47.00 mm distance while Pentax 45.46, so there should be some room for an adapter... hth, Stefano

03-10-2013, 12:14 PM	#13
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by seppstefano mounts.htm Leica has 47.00 mm distance while Pentax 45.46, so there should be some room for an adapter... hth, Stefano That is for Leica R. OP has Leica 39 LTM. Steve

03-10-2013, 01:15 PM	#14
seppstefano Junior Member Join Date: Jan 2012 Posts: 38	...oops, I didn't notice it was a Summaron... thank you Steve and sorry for the misinformation. Stefano

03-10-2013, 01:21 PM	#15
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by seppstefano ...oops, I didn't notice it was a Summaron Summar (it's f/2)