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Isconar 100mm f/4.5 first try
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PostPosted: Wed May 09, 2018 7:54 pm    Post subject: Isconar 100mm f/4.5 first try Reply with quote
I already knew that this was a good lens after seeing Oldhands excellent image thread. The price was great but the focus on my copy was very heavy, an easy solution was to mount it on a helicoid adapter. Actually, when I first handled it I was very disappointed to discover that the focusing ring actually was loose and nothing happened when I turned it. But I jammed it towards the infinity and then somehow it engaged with the optical block. What a great relief!

The design is simply beautiful and on the inside it hides a simple, slow, but excellent triplet formula.

The older rendering/look of triplet lenses has really started to grow on me. A big part thanks to Nordentro Very Happy

Camera: Sony a7
Raw converter: ACR




#1


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#5 f/5.6 or 8


#6 wide open


#7


PostPosted: Wed May 09, 2018 8:27 pm    Post subject: Reply with quote
Like 1 Like 1 small


PostPosted: Thu May 10, 2018 12:38 am    Post subject: Re: Isconar 100mm f/4.5 first try Reply with quote
blotafton wrote:

. . .
The older rendering/look of triplet lenses has really started to grow on me. . .



Yes, I like that look!


PostPosted: Thu May 10, 2018 1:10 am    Post subject: Reply with quote
One of the very first MF lenses I got when I started this addiction was an Isconar 100mm 4.5. I was quite pleased with the results. The downside is I now have an spare room with bins brimming with lenses 3 or 4 hundred I'm guessing. Wink


PostPosted: Thu May 10, 2018 6:56 am    Post subject: Reply with quote
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PostPosted: Thu May 10, 2018 9:56 am    Post subject: Reply with quote
Great dog portraits!


PostPosted: Thu May 10, 2018 10:46 am    Post subject: Reply with quote
Like 1 Like 1

Very good photos!

ETA

BTW I just completed reassembly of an Isco-Göttingen Westar f4.5 100mm lens. It is not your lens but its appearance is very similar to your lens. I'm not at all a skilled lens technician, but mine is an easy lens to re-lube and tightening a few screws should fix your loose focus collar problem. You do need a VERY tiny screwdriver.


PostPosted: Thu May 10, 2018 5:00 pm    Post subject: Reply with quote
wolan wrote:
Like 1 Like 1 small


55 wrote:
blotafton wrote:

. . .
The older rendering/look of triplet lenses has really started to grow on me. . .



Yes, I like that look!


kds315* wrote:
Like 1 Like 1 Like 1


TrueLoveOne wrote:
Great dog portraits!


Thanks guys!

jamaeolus wrote:
One of the very first MF lenses I got when I started this addiction was an Isconar 100mm 4.5. I was quite pleased with the results. The downside is I now have an spare room with bins brimming with lenses 3 or 4 hundred I'm guessing. Wink


That was a good start, too good maybe Smile


guardian wrote:
Like 1 Like 1

Very good photos!

ETA

BTW I just completed reassembly of an Isco-Göttingen Westar f4.5 100mm lens. It is not your lens but its appearance is very similar to your lens. I'm not at all a skilled lens technician, but mine is an easy lens to re-lube and tightening a few screws should fix your loose focus collar problem. You do need a VERY tiny screwdriver.


Thanks! Same here, I can preform minor repairs. I'll tighten those screws for sure. What is the recommended grease?


PostPosted: Fri May 11, 2018 1:21 pm    Post subject: Reply with quote
Thx for being mentioned Like 1 small

The drawing is fabulous and has a lot of character. This lens has an interesting design, is very lightweight and affordable for sure Wink


PostPosted: Fri May 11, 2018 1:56 pm    Post subject: Reply with quote
Like 1 small

Steinheil made a Cassar 105/4.5 which is optically and mechanically similar to this ISCO lens. It will be nice to compare them side by side. Wink


PostPosted: Fri May 11, 2018 3:57 pm    Post subject: Reply with quote
I always liked the rendering Cooke Triplets produce!!


PostPosted: Fri May 11, 2018 6:42 pm    Post subject: Reply with quote
blotafton wrote:
. . .
Same here, I can preform minor repairs. I'll tighten those screws for sure. What is the recommended grease?


I've just begun learning to disassemble and grease lenses myself. After I researched helicoid grease earlier this year, I bought some of this:
https://www.ebay.com/itm/HELIMAX-XP-Camera-Telescope-Optical-Instrument-Focusing-Helicoid-Grease-w-PTFE-/271211561097?_trksid=p2349526.m4383.l4275.c10#viTabs_0

My local car parts store sells small tubes of white lithium grease, but they have only NLGI #2 which is thicker than the NLGI #1 I bought on ebay. For me, lighter is better so I use the #1 grease. And I've found that a little grease goes a long way, so a small amount should be enough for most people.
https://en.wikipedia.org/wiki/NLGI_consistency_number


PostPosted: Fri May 11, 2018 9:10 pm    Post subject: Reply with quote
Nordentro wrote:
Thx for being mentioned Like 1 small

The drawing is fabulous and has a lot of character. This lens has an interesting design, is very lightweight and affordable for sure Wink


When I search google for obscure chrome/aluminum lenses your photos often show up Smile Your website is a great resource!

Yes and the low weight makes it a good combination on the A7.


PostPosted: Fri May 11, 2018 9:16 pm    Post subject: Reply with quote
calvin83 wrote:
Like 1 small

Steinheil made a Cassar 105/4.5 which is optically and mechanically similar to this ISCO lens. It will be nice to compare them side by side. Wink


That one looks suspiciously similar! If you have both go ahead! Very Happy


PostPosted: Fri May 11, 2018 9:20 pm    Post subject: Reply with quote
kds315* wrote:
I always liked the rendering Cooke Triplets produce!!


Like 1


55 wrote:
blotafton wrote:
. . .
Same here, I can preform minor repairs. I'll tighten those screws for sure. What is the recommended grease?


I've just begun learning to disassemble and grease lenses myself. After I researched helicoid grease earlier this year, I bought some of this:
https://www.ebay.com/itm/HELIMAX-XP-Camera-Telescope-Optical-Instrument-Focusing-Helicoid-Grease-w-PTFE-/271211561097?_trksid=p2349526.m4383.l4275.c10#viTabs_0

My local car parts store sells small tubes of white lithium grease, but they have only NLGI #2 which is thicker than the NLGI #1 I bought on ebay. For me, lighter is better so I use the #1 grease. And I've found that a little grease goes a long way, so a small amount should be enough for most people.
https://en.wikipedia.org/wiki/NLGI_consistency_number


Thanks! I used gun grease an old Agfa folder before, probably not the best choice Laughing


PostPosted: Fri May 11, 2018 10:17 pm    Post subject: Reply with quote
55 wrote:
blotafton wrote:
. . .
Same here, I can preform minor repairs. I'll tighten those screws for sure. What is the recommended grease?


I've just begun learning to disassemble and grease lenses myself. After I researched helicoid grease earlier this year, I bought some of this:
https://www.ebay.com/itm/HELIMAX-XP-Camera-Telescope-Optical-Instrument-Focusing-Helicoid-Grease-w-PTFE-/271211561097?_trksid=p2349526.m4383.l4275.c10#viTabs_0

My local car parts store sells small tubes of white lithium grease, but they have only NLGI #2 which is thicker than the NLGI #1 I bought on ebay. For me, lighter is better so I use the #1 grease. And I've found that a little grease goes a long way, so a small amount should be enough for most people.
https://en.wikipedia.org/wiki/NLGI_consistency_number


Agreed. I use Helimax as well. After all, it is designed to grease lenses.

The stuff is incredibly long lasting. Only the tiniest amount will grease a lens. There is REAL danger in using too much.


PostPosted: Tue Jan 01, 2019 7:45 pm    Post subject: Reply with quote
I obtained one of these Isconar 100 4.5s recently, and I'm wondering what others do about the filter thread...

As far as I can tell it seems to be 41mm, which is a very odd size for hoods, filters, and step-up rings.

There are some 41-58mm step-up rings out there, but that seems excessive for such a small, lightweight lens.
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