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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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 Posted: Mon Jul 14, 2014 5:45 am Post subject: Super-Multi-Coated Takumar 6X7 4.5/75 on K-10D |
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Oldhand wrote:
My love affair with old medium format lenses continues.
It is so counter intuitive to be using these monsters when there are perfectly good alternatives in 35mm format around, but there is
something about the slowness and deliberateness of dealing with these lenses that endears me to them.
Oh, and they have been cheap to acquire.
Anyhoo, here we go with another adventure into medium format - Pentax 67 - land.
It is a cloudy and dull and cold day here, and I have been stuck inside all morning.
Fresh air needed - so out into the garden once more.
Mid winter and a dearth of subject matter, but did manage to find a few specimens.
Most images have a vignette - these are added by me to enhance a flat lighting regime.
Other than that and some exposure adjustment - no other PP.
Definitely no sharpening.
OH
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izvar
Joined: 17 Feb 2011
Posts: 252
Location: Moldova
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| Posted: Mon Jul 14, 2014 7:18 am Post subject: |
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izvar wrote:
Excellent results!
I don't own this one. When I've choosed between 45,55,75, I stopped to 55mm. Now I need 45 and 75 too 
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“The hardest thing of all is to find a black cat in a dark room, especially if there is no cat.”
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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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| Posted: Mon Jul 14, 2014 7:41 am Post subject: |
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Oldhand wrote:
| izvar wrote: |
Excellent results!
I don't own this one. When I've choosed between 45,55,75, I stopped to 55mm. Now I need 45 and 75 too |
 - yes it is a good lens - even if it is slow (f4.5).
Here is an enlargement of the last image:
Out of interest - number 4 is a nest of a pardalote - either a spotted or striated - it is too fast for me to identify it.
Here is what I am talking about from Graham Pizzey's excellent book.
Cheers
OH
Last edited by Oldhand on Mon Jul 14, 2014 8:15 am; edited 1 time in total |
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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Mon Jul 14, 2014 8:11 am Post subject: |
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mo wrote:
I am enjoying seeing you use these medium format lenses,I may try and pick up one to try out.
A little OT but if you want another good birding book try "Australian Birds" "A concise Photographic Field Guide" by Donald and Molly Trounson,out of print now, but if you find it buy it....excellent bird photography.
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Moira, Moderator 
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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hoanpham
Joined: 31 Jan 2011
Posts: 2575
Expire: 2015-01-18
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| Posted: Mon Jul 14, 2014 10:58 am Post subject: |
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hoanpham wrote:
this lens looks awesome!
Very nice. |
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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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| Posted: Mon Jul 14, 2014 11:40 pm Post subject: |
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Oldhand wrote:
Thanks Mo and hoanpham.
Just to give some idea of the size of the lens, here is a picce on Pentax K-10D.
It is big - but not as heavy as one would think.
OH
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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Tue Jul 15, 2014 3:08 am Post subject: |
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mo wrote:
Is your adapter the orginal or a third party?
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Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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Mark
Joined: 01 Dec 2012
Posts: 251
Location: Budapest, Hungary
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| Posted: Tue Jul 15, 2014 4:36 am Post subject: |
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Mark wrote:
That combo looks a bit nose heavy. Just like my nex before with anything above 85mm. The images are really nice, great pop effect!
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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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| Posted: Tue Jul 15, 2014 4:45 am Post subject: |
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Oldhand wrote:
Hi Mo,
it is the cheapest chinese adapter I could find - certainly not original
| Mark wrote: |
| That combo looks a bit nose heavy. Just like my nex before with anything above 85mm. The images are really nice, great pop effect! |
Yes it does look nose heavy, but apart from being bulky it isn't what it looks.
The lens is much lighter than its appearance and on the Pentax actually is reasonably balanced.
On a Sony A7 it might be a handfull though
OH |
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meanwhile
Joined: 29 May 2014
Posts: 225
Location: Australia
Expire: 2016-11-28
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| Posted: Tue Jul 15, 2014 5:40 am Post subject: |
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meanwhile wrote:
I know I shouldn't ask, but it has me scratching my head to calculate.
What mm lens has the same field of view as a 75mm 6x7 lens on a crop camera?
Using this table: http://www.pentaxforums.com/forums/54-pentax-lens-articles/93714-field-view-tables-aps-c-24x36-645d-645-6x7.html
Looks like 75mm 6x7 has field of view of 50 degrees, so it would have the same field of view as a 26mm-ish crop lens?
Is that correct?
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In my bag: Sony A7II - Olympus OM 21mm f/3.5 - Minolta M-Rokkor 40mm f/2.0 - Konica Hexanon 57mm f/1.2 AR - Olympus Zuiko OM 100mm f/2.8 - Pentax 135mm f/3.5 |
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Aanything
Joined: 27 Aug 2011
Posts: 2187
Location: Piacenza, Italy
Expire: 2014-05-30
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| Posted: Tue Jul 15, 2014 6:00 am Post subject: |
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Aanything wrote:
| meanwhile wrote: |
I know I shouldn't ask, but it has me scratching my head to calculate.
What mm lens has the same field of view as a 75mm 6x7 lens on a crop camera? |
Every 75mm lens Will give you the same angle when used on sensors of the same size.
So, on an aps-c every 75mm from tiny tv lenses to medium format ones Will be the same (except that lenses designed for smaller formats may vignette).
When used on its original format, this lens will give an angle equivalent to a normal/very moderate wide - I think.
Beautiful samples, btw, and those 6x7 takumars look great.
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meanwhile
Joined: 29 May 2014
Posts: 225
Location: Australia
Expire: 2016-11-28
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| Posted: Tue Jul 15, 2014 6:17 am Post subject: |
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meanwhile wrote:
Wait, no, it's the other way, isn't it?
Yep, I know Aanything ... two kids jumping off me, asking the precisely right question is difficult. 
How about this way - If I was going to buy a lens designed for full frame (24x36) sensors to put on my APS-C sensored camera, what focal length lens would I need to buy to give me the same field of view as a 6x7 75mm would be on my APS-C camera?
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In my bag: Sony A7II - Olympus OM 21mm f/3.5 - Minolta M-Rokkor 40mm f/2.0 - Konica Hexanon 57mm f/1.2 AR - Olympus Zuiko OM 100mm f/2.8 - Pentax 135mm f/3.5 |
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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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| Posted: Tue Jul 15, 2014 6:26 am Post subject: |
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Oldhand wrote:
Thank you for the kind words Aanything.
Yes a 75mm lens is a 75mm lens is a 75mm lens no matter where from as long as they are all fitted to the same sensor.
I don't have multiples of 75mm but here are some sample piccies from various 200mm lenses - all taken on APS-C.
Pentax 6X7 200mm:
Mamiya 645 200mm:
Nikkor AI 200mm:
All shot on Nikon D300 - same sensor size and same field of view recorded.
The camera was on a tripod and was not moved - only the lenses were changed and focused.
None of the images was cropped.
Hope this helps
OH
Last edited by Oldhand on Tue Jul 15, 2014 9:20 am; edited 1 time in total |
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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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| Posted: Tue Jul 15, 2014 7:10 am Post subject: |
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Oldhand wrote:
| meanwhile wrote: |
Wait, no, it's the other way, isn't it?
Yep, I know Aanything ... two kids jumping off me, asking the precisely right question is difficult.
How about this way - If I was going to buy a lens designed for full frame (24x36) sensors to put on my APS-C sensored camera, what focal length lens would I need to buy to give me the same field of view as a 6x7 75mm would be on my APS-C camera? |
I think I may have answered this question above.
There is another way that our minds ponder things however.
Just looking at it a different way -
The 75mm lens for the Pentax 6X7 camera was the modest wide angle lens - something like the 35mm wide angle lens for old 35mm film cameras.
On a Nikon D300 (APS-C) a modest wide angle lens is around the 24mm mark.
Hope this hasn't confused anyone.
OH |
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meanwhile
Joined: 29 May 2014
Posts: 225
Location: Australia
Expire: 2016-11-28
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| Posted: Tue Jul 15, 2014 2:27 pm Post subject: |
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meanwhile wrote:
Thank you, Oldhand. That's actually the opposite of what I was wondering, but I've just made the whole thing over complicated.
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In my bag: Sony A7II - Olympus OM 21mm f/3.5 - Minolta M-Rokkor 40mm f/2.0 - Konica Hexanon 57mm f/1.2 AR - Olympus Zuiko OM 100mm f/2.8 - Pentax 135mm f/3.5 |
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David
Joined: 13 Apr 2011
Posts: 1869
Location: Denver, Colorado
Expire: 2013-01-25
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| Posted: Tue Jul 15, 2014 5:28 pm Post subject: |
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David wrote:
I've been fiddling with my 6X7 lenses on my Pentax bodies (film and digital). I've found that the 105, so far, has the sharpest image. The 135 and 200 seem to come up close behind. The worst has been the 90mm LS, which is softer than the 35mm fisheye.
I have the same adapter as you. Mine FELL APART all at once and the lens on my camera nearly fell on the ground. To fix it, I put in better screws (the ones it came with did not have deep enough threads) and placed a dollop of Pliobond on top of each screw head. It would be worth checking to see if the 6X7 mount and reducer on yours are seated firmly. If not, the screws will likely work themselves free.
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Oldhand
Joined: 01 Apr 2013
Posts: 6005
Location: Mid North Coast NSW - Australia
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| Posted: Thu Jul 17, 2014 1:25 am Post subject: |
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Oldhand wrote:
| David wrote: |
I've been fiddling with my 6X7 lenses on my Pentax bodies (film and digital). I've found that the 105, so far, has the sharpest image. The 135 and 200 seem to come up close behind. The worst has been the 90mm LS, which is softer than the 35mm fisheye.
I have the same adapter as you. Mine FELL APART all at once and the lens on my camera nearly fell on the ground. To fix it, I put in better screws (the ones it came with did not have deep enough threads) and placed a dollop of Pliobond on top of each screw head. It would be worth checking to see if the 6X7 mount and reducer on yours are seated firmly. If not, the screws will likely work themselves free. |
Thank you for the tip David.
I will check mine carefully.
I agree that to 2.4/105 is awesome.
Here are some more images from this lens:
OH
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