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Forum: Lens Clubs 09-16-2018, 12:04 PM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
I am learning a lot following this group and thank you all for your great efforts to make it better. Seeing the great results you've got using these projector lenses, you've motivated me to go out today with a couple of my all time favorites, Benoist Berthiot Panastar S and Leitz Wetzlar Colorplan. Thank you for that.

Here are the results:


Zinnia haageana
by Marko Jankovic, on Flickr


Zinnia haageana
by Marko Jankovic, on Flickr


Zinnia haageana
by Marko Jankovic, on Flickr
Forum: Lens Clubs 08-03-2018, 07:29 AM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
Love that spider shot!
Forum: Mini-Challenges, Games, and Photo Stories 04-22-2018, 01:51 PM  
Game Single In - April, 2018
Posted By Audi 5 cyl
Replies: 103
Views: 4,071
I`ve spent three days away from civilization searching for white-backed woodpeckers in the french Pyrenees and will not post anything until tomorrow evening at least.
Also, as I`ll be traveling abroad end of next week, any posting after the 26th is questionable but i`ll do my best. For the moment, this month`s lens is not on a packing list.
Forum: Lens Clubs 04-13-2018, 10:53 AM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
Looking forward to your results Thagomizer.

Think about fixed cardboard apertures. Most of the projector lenses are triplets and even though they can give marvelous bokeh at times, they lack in resolution and sharpness. Both can be achieved with apertures added in front of the lens. They don`t necessarily have to be round, any shape will do. I`ve been experimenting with cardboard but there are other options online. Have fun!
Forum: Mini-Challenges, Games, and Photo Stories 04-01-2018, 09:26 AM  
Game Single In - April, 2018
Posted By Audi 5 cyl
Replies: 103
Views: 4,071
Congrats Sandy!

Just decided to go and see what's up with the SIC and seeing your list of choices it seems as a hell of a month already. Looking forward to it.

I'm in.

As the nature is starting to wake up here, it's only just to follow it through with a macro lens. I'll be doing the month with a Schneider-Kreuznach Componon 4/50 lens. The way I'm using it now, it is no good beyond 4m but that might change during the month.
Forum: Lens Clubs 03-22-2018, 06:49 PM  
Enlarger Lens Club
Posted By Audi 5 cyl
Replies: 40
Views: 7,414
I think it is a great lens. It must be a collector item nowadays. I would not pay 200 for it but I am not a collector either.

60 years ago, T&H was selling patents to both Leica and Zeiss, so my first guess is that the results will be no less than fabulous. Great sharpness, probably good colors if used with a hood, coupled with reduced contrast for today's standards. I guess it is a tessar type lens, probably with some highly refractive glass (read radioactive). If it has yellowed, give it a sunbath until it clears or post-process the pictures.
Forum: Lens Clubs 03-22-2018, 02:18 PM  
Enlarger Lens Club
Posted By Audi 5 cyl
Replies: 40
Views: 7,414
Well, not all enlarger lenses are the same and the choice is really up to you. A bad enlarger lens will get you some results but it can not compare to macro lenses in picture quality. A good enlarger lens macro setup will cost you at least 50 EUR or 60 $ and you can score a used old 50 mm macro lens for that money. But, with enlargers, you can go very cheaply up to 105 mm and old macro lenses of that length do not come close in price but they do compensate in ease of use. Just to add, every time i check the prices of 200 mm macro lenses, my head hurts, and therefore, the biggest advantage of enlargers is that you can go up to 240 mm for a very small money and have great results (it is a heavy setup though). Another + of the enlargers is that they often come with a circular iris at all apertures and that is fantastic.

If I want image quality, I shoot with Componons and Rodagons, or even plasmats of any french manufacturer, but if I want an artsy feeling, I take some old tessar design enlarger.

As I love tinkering around lenses, shooting mostly in the field, without flash, longer focal lengths work great for me as critters mind the intrusion most of the time. But, if you would like to take pictures of tiny stuff at an inch or two, then shorter lenses (30 mm or less) would do as well, but this is when things gets pricey.
Forum: Lens Clubs 03-20-2018, 01:37 PM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
I like it quite a bit, for the rest, judge by yourself.

Biotar design projector (Leti 60) lens 92mm f/2 | Flickr
Forum: Lens Clubs 10-14-2017, 02:00 PM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
Here is a series of images taken through the ZEISS-IKON VARIO-TALON MC 1:3,5/70-120 at various focal lengths. It's the first and likely the last zoom projector lens I will acquire. I've been searching for it for a while and was obliged to source it from Germany via local online service similar to ebay.
For now, I can say that I'm quite surprised with the sharpness. For the rest, I'll see later.


Autographa gamma caterpillar feeding on Linum grandiflorum.
by Marko Jankovic, on Flickr


Mirabilis jalapa
by Marko Jankovic, on Flickr


Cosmos bipinnatus
by Marko Jankovic, on Flickr


Cosmos bipinnatus
by Marko Jankovic, on Flickr


Salvia microphylla
by Marko Jankovic, on Flickr

Interesting fact: It has a concave front lens :)

Regards,
Marko
Forum: Lens Clubs 10-13-2017, 12:00 PM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
Nice series Jean!

I've pulled my Colorplan out to the garden today too, the old one 5el/4gr. Took me a while to find it. Here's the result.


Linum grandiflorum
by Marko Jankovic, on Flickr


Tropaeolum majus
by Marko Jankovic, on Flickr


Cosmos bipinnatus
by Marko Jankovic, on Flickr

Missed the focus here, but I like the bokeh


Cosmos bipinnatus
by Marko Jankovic, on Flickr

Tomorrow I'll be testing my first zoom projector lens. Will publish the results here once done.
Forum: Lens Clubs 10-11-2017, 08:14 AM  
The "Projector Lens" Club ...
Posted By Audi 5 cyl
Replies: 437
Views: 115,745
Hello Doc, welcome to the forums.

The only projector lens I have that will cover medium format without infinity issues is an Elmaron 2,8/150. This is not surprising as it comes from a medium format projector Leitz Prado Universal. I guess that you can source any lens intended for medium format projectors and use them with success on your Pentax 67. There are some projector lenses of the Sonnar design used in Hasselblad medium format projectors, the one I've seen before is P-Sonnar 4/250, but the price never justified the purchase for me. There is a plethora of lenses you can use from Mamiya and Rollei MF projectors. As they come from the "manual slide advance" projectors, that have been rendered obsolete, it might be cheap to get the hands on one of those. Elmaron can be bought often on ebay for about 30-40 EUR. The image quality is great for a triplet.
Forum: Lens Clubs 08-06-2017, 02:53 PM  
Enlarger Lens Club
Posted By Audi 5 cyl
Replies: 40
Views: 7,414
What you need:

- Canon EF to m42, chipped if possible
- One m42 helicoid 39-90mm and a set of m42 extension tubes (those are very cheap on ebay) or two helicoids, why not (will have infinity and will have 1:1,3 magnification or so at the same time)
- m42 to m50 adapter (but be sure to check that the rear element of your lens is not wider than 42mm!!!). I found this one (M50x0.75 female to M42x1 male long adapter for Rodenstock lenses) online, but you can use that one only if you do not use the two stacked helicoids.
Forum: Lens Clubs 08-06-2017, 09:08 AM  
300mm plus Lens Club: discuss your long lenses
Posted By Audi 5 cyl
Replies: 32,916
Views: 3,159,933
If you have a sturdy tripod and you're just after the eclipse (not in need of a smooth bokeh for that), why not go with a 3m-5ca. It's a f/8 lens but a sharp one indeed, budget wise at least.
Forum: Lens Clubs 08-06-2017, 02:31 AM  
Enlarger Lens Club
Posted By Audi 5 cyl
Replies: 40
Views: 7,414
I took out my Componon 5,6/150 for a spin and determined that for infinity you'll need roughly 10cm, and for 1:1 ratio, roughly 26cm of extension from your camera body. This means that the helicoid you have found on ebay, won't even give you infinity without extension tubes, but using a 36-90mm helicoid with 62-64mm of extension tubes, will give you an effective range from infinity to approximately 1:2,75. Which is not bad at all.
I have a M65 helicoid that I use for Russian projector lenses with a barrel diameter of 62.5mm. I find these helicoids difficult to adapt as they are using big m65 thread, especially on the lens end. I would go for a m42 to m42 36-90mm helicoid as it is a lot easier to adapt it to Canon EF and easily available m42 extension tubes. Here's a link for it:

M42 to M42 Adjustable Focusing Helicoid 36-90mm Macro Extension Adapter + CAP

I would only add that for real macro application, bellows are far more convenient. I am reaching about 1,6:1 ratio with my Russian m42 bellows and this lens, mounted on 55mm of extension tubes, while still keeping the infinity focusing.
Forum: Lens Clubs 08-05-2017, 01:43 PM  
Enlarger Lens Club
Posted By Audi 5 cyl
Replies: 40
Views: 7,414
It is an M50 screw mount. Both Rodenstock and Schneider-Kreuznach are using this mount. I know that adapters from M50 to m39 exist but they have been pricey in the past (check what rafcamera are selling now). For 150mm lens, you'll need more than a helicoid to take pictures as it is a long focal length. I would advise a helicoid, as long as possible, maybe something like this and m42 extension tubes to add some length. Also, You'll need an m42 to Canon EF adapter (chipped if you want focus confirmation, but beware, some of the newer Canon models won't accept chipped adapters without firmware upgrade). Alternative solution is to get some m42 bellows and adapt them to EF mount. This bellows solution will likely get you to 1:1 magnification as well and that is really sweet for a 150mm lens.
The biggest problem for you is the m50 to m42 adapter (or m50 to m39, combined with a m39 to m42 adapter). I would just find somebody locally with a metal lathe and fabricate it.

I hope that my answer is clear enough.

In the end, I'll just say that you got a great lens there and I wish you the best of luck with it.
Componon-S line of lenses is fantastic for shooting anything from macro to landscapes and gives consistent results at all apertures. In June, I did a full month with a 100 mm Componon-s and it is a great lens. Some examples are here-under.


Anacamptis coriophora subsp. fragrans x Anacamptis palustris hybrid
by Marko Jankovic, on Flickr


The garden varieties
by Marko Jankovic, on Flickr


Salvia microphylla
by Marko Jankovic, on Flickr


Centaurium erythraea
by Marko Jankovic, on Flickr


Thymelicus lineola on Centaurea calcitrapa
by Marko Jankovic, on Flickr


Limonium vulgare
by Marko Jankovic, on Flickr


Thymelicus lineola
by Marko Jankovic, on Flickr


Bombylius on Centaurea calcitrapa
by Marko Jankovic, on Flickr

Please, mind not the specs of dust


Just another Cosmos
by Marko Jankovic, on Flickr
Forum: Pentax SLR Lens Discussion 08-04-2017, 12:13 AM  
The Bokeh Club
Posted By Audi 5 cyl
Replies: 17,902
Views: 1,602,276
Some of the bokeh shots from my SIC July efforts with Boyer Paris Saphir 1:3.5/75mm


Pancratium maritimum
by Marko Jankovic, on Flickr


Dipsacus fullonum
by Marko Jankovic, on Flickr


Backlit Cosmos
by Marko Jankovic, on Flickr


Polyphylla fullo
by Marko Jankovic, on Flickr


Linum grandiflorum
by Marko Jankovic, on Flickr


Cosmos bipinnatus
by Marko Jankovic, on Flickr


Malva sylvestris
by Marko Jankovic, on Flickr
Forum: Mini-Challenges, Games, and Photo Stories 08-01-2017, 03:59 PM  
Game Single In July 2017
Posted By Audi 5 cyl
Replies: 105
Views: 5,106
I've missed some days toward the end, missed to upload some others, and will be skipping the August entirely but I feel like I could share the general impressions on the little Boyer lens.

First to say, I do not know why would anybody ditch the plasmat design as it is one of the best lenses I own. Easy to nail focus, exquisite for portraits, has a decent contrast and is extremely sharp from wide open in macro a bit closed in infinity mode as well. During the last thirty days, I've made some of the best macro and bokeh shots in my short photographing history with this little gem.

An interesting fact is that I've made a very small number of shots with this lens in July, a little bit less than two hundred. I think it is my all time low for SIC, and yet, I had such a good fun shooting with it, maybe for the first time since Colorplan sometimes last year.

Here's a link to the lens folder on flickr.

Regards,
Marko
Forum: Mini-Challenges, Games, and Photo Stories 07-20-2017, 04:10 PM  
Game Single In July 2017
Posted By Audi 5 cyl
Replies: 105
Views: 5,106
I have a sudden trip in front of me and will be in Italy tomorrow, in Serbia for the weekend and back in France on Monday. Probably no posting until Tuesday for me.

Have a nice weekend everybody.
Forum: Pentax DSLR Discussion 07-03-2017, 02:11 PM  
The Six-Megapixel Club
Posted By Audi 5 cyl
Replies: 1,087
Views: 99,391
Thank you rodaballo.



hahaha
Thank you pathdoc. I am planning to repair the camera, but now my goal will be to resurrect the painter.



I don't really know. There I was, shoothing with a CZ 4/20 and the mirror got stuck. Batteries in, batteries out, take a shot, camera dead.

No life from it since. It is a camera that I've been repairing before. I added a condenser to the power lines to avoid the battery low issue. It worked for a while and now this. Until I open it, I will not know, but I guess, from the picture that the magnets did not have enough power to lift the sensor to the horizontal position before the shutter fired. Therefore I suspect the power related issue, stuck mirror gives me the same indication. I'll open it one day to examine all the potential failure points (probably my solder joints :) ). I have some spare parts too so we'll see.
Forum: Mini-Challenges, Games, and Photo Stories 07-02-2017, 07:24 AM  
Game Single In July 2017
Posted By Audi 5 cyl
Replies: 105
Views: 5,106
I wanted to go with a LOMO 35KP 1.8/120 in July but in the end I realized that there is quite a bit of machining to be done to reach anything beyond 6 meters. Therefore I grabbed and adapted another lens for the month so I'll be going with it for July. I wanted to do a plasmat month for a while now so here it is. It is a Boyer Paris Saphir 1:3.5 F=75mm, designed by Suzanne LÚvy-Bloch for Boyer and sold sometimes during the fifties in France, s/n 465101.
Forum: Pentax SLR Lens Discussion 06-30-2017, 07:02 PM  
The Bokeh Club
Posted By Audi 5 cyl
Replies: 17,902
Views: 1,602,276
Thank you WPRESTO. It was not all that hard. There were plenty of them around so I just waited on one of the flowers. This is a third and best shot in the series of seven. Kudos to you for trying that on film, i'm not sure I'd do the same as it takes plenty of shots to get the desired result sometimes.



Yes, it is an enlarging lens for medium format.



I've been using it on bellows before, but for these shots, and all the others that I made recently, I used it either on one or two stacked focusing helicoids.



i use it for macro work, but not reversed. I am reversing older Componons though. My favorite is 5.6/80.



The lens is converted to m42, not reversed, mounted on the 39-90 mm focusing helicoid and one of the modified m42 extension rings is added to achieve infinity when the focusing helicoid is set to 39mm



It has five blades and even wide open, the iris is never completely round. Closed down. It has a star like shape.



Exactly, old 5.6/105 Componon has 15 blades if I remember well, others too I guess.
Forum: Pentax SLR Lens Discussion 06-30-2017, 12:57 PM  
The Bokeh Club
Posted By Audi 5 cyl
Replies: 17,902
Views: 1,602,276
SIC for June has come to an end and I'd like to share with you some bokeh gems from my efforts with a Schneider-Kreuznach Componon-S 5.6/100.

I'll start with a big name


Anacamptis coriophora subsp. fragrans x Anacamptis palustris hybrid
by Marko Jankovic, on Flickr


The garden varieties
by Marko Jankovic, on Flickr


Salvia microphylla
by Marko Jankovic, on Flickr


Centaurium erythraea
by Marko Jankovic, on Flickr


Thymelicus lineola on Centaurea calcitrapa
by Marko Jankovic, on Flickr


Limonium vulgare
by Marko Jankovic, on Flickr


Thymelicus lineola
by Marko Jankovic, on Flickr


Bombylius on Centaurea calcitrapa
by Marko Jankovic, on Flickr

Please, mind not the specs of dust


Just another Cosmos
by Marko Jankovic, on Flickr
Forum: Mini-Challenges, Games, and Photo Stories 06-30-2017, 12:39 PM  
Game Single In June 2017
Posted By Audi 5 cyl
Replies: 141
Views: 6,671
To begin with, this needs to be said. Good shooting everyone! I've seen some very nice images during these last weeks.

The month is coming to an end and here is my opinion on the lens I've been using this month.
Like all the enlarger lenses from the Schneider Kreuznach Componon lineup, 5.6/100 Componon-S shows no aberrations whatsoever, is flare resistant, and has a great sharpness across the frame at f/5.6, and excellent from f/8. It's a slow lens, topping out at f/5.6 which makes the subject isolation difficult at medium distances but for macro applications it is sufficiently fast. Anyhow, I love this little gem and it's likely that I will hold on to it forever.

I'm not disappointed but it's a fact. This was my first SIC month without explored images.
I hope that we'll hang out a bit more in July.

Regards,

Marko
Forum: Pentax DSLR Discussion 06-25-2017, 02:39 PM  
The Six-Megapixel Club
Posted By Audi 5 cyl
Replies: 1,087
Views: 99,391
the very last exposure of my k100d


Day 16 - last exposure of my K 100d
by Marko Jankovic, on Flickr
Forum: Mini-Challenges, Games, and Photo Stories 06-25-2017, 08:45 AM  
Game Single In June 2017
Posted By Audi 5 cyl
Replies: 141
Views: 6,671
I think if I go for another SIC soon, I'll definitely be using something faster. Being limited at f/5.6 becomes a buzzkill after a while. Maybe the time has come for me to finally adapt the LOMO 35KP 1.8/120 for Pentax and give it a kick or two in July.
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