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Heiko Köster
Attended Technical University of Dortmund
Lives in Germany
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Heiko Köster

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Order / Sizes of Fresnel Lenses


Thank you +Ron Grooms for this wonderful chart.
Sizes of Fresnel Lens used in Lighthouses
Chart from the Ponce Inlet Lighthouse Lens Room

A good chart found at the Ponce Inlet Lighthouse that shows the sizes of the various Fresnel Lens used in Lighthouses.  To read the information view the photo full size and zoom in.

#lighthouse   #fresnel   #lenses   #history   #travel  
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Heiko Köster

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Stay cool....

A different lighting and this time a color version.

#hqspportraits +HQSP Portraits curated by +Ryan Ottaway Martin  +Frank Nöthe 

#Portrait   #portraitphotography   #portraiture   #male   #suit   #jeans   #bearded   #beards   #character   #personality   #strobist  
#studio_photography   #lighting  
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Vielen Dank, +Thomas Deckert +Thomas Ber 
Thank you +Ray Harris 
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Making of - of an unusual on location office portrait

It was fun to shoot this series. 

First we went for dinner to wait for the blue hour. 

Around sunset at 8 pm we split up, he went back into the building and I drove to the first location from where I wanted to shoot from. 

But only 15 minutes later it was still too bright to get a decent exposure time to zoom. With ISO 50 and f8 I got 1.6 seconds exposure without a ND filter, which I didn't want to use to keep the auto focus working.It also turned out, that even with a 300mm zoom I wasn't close enough to have my model visible at a reasonable size. So I decided to move closer to let him appear larger.

10 minutes later and 200m closer with f16 I reached a 20 second exposure time and could start zooming. I was standing on a rail road bridge with pedestrian path heavily used by joggers and also quite a bit of train traffic, so I had to wait some time to make my shots. After several shots I changed locations again to get a completely different angle form the other side of the river next to the building. My model had to change offices in order to get into the frame and I hurried back to my car to get to the other river bank.

Around 8:50pm I started shooting again , from the river bank now and it was dark enough to shoot with f8 and 25 seconds exposure. At that point it was the perfect time for blue light. Took some shots and shortly before the end of the blue hour I drove back to my first shooting spot to take some zoom images with the skyline in the background. 

My model went back to the other office and posed again. The hole time we communicated via our cell phones. I informed him when the exposure started and counted down the seconds for him to stand still before I began zooming after which he could relax. Passers by must have been wondering what kind of strange call I was having. 

At the end at 9:15pm I had about 24 shots from four different angles and only two of them turned out blurry due to vibrations caused by heavy winds. Not too bad.

‪#‎blog‬ ‪#‎photography‬ ‪#‎zoom‬ ‪#‎architecture‬ ‪#‎bluehour‬ ‪#‎Frankfurt‬ ‪#‎Ffm‬
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The different kind of Office Portrait
Frankfurt, 2016

During my zoom experiments I thought, it would be interesting to have people at the windows of the buildings I zoomed on. So I asked a friend, if he would take part in this special office portrait. 

Can you see him ?

#hqspmotion  +HQSP Motion curated by +Leanne Cole  +Anja Wessels

#monochromephotography   #blackandwhite   #zoom  
#Frankfurt   #Mainhattan   #Architecture   #Portrait  
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Thank you +Betty Manousos 
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Working on the Squinch

Posing and looking like +Peter Hurley  
I'm still working on the lighting ,but once I'll won the lottery I'll invest in one of Peter's lighting sets. ;)

Same setting with a different composition & processing:

#hqspportraits +HQSP Portraits curated by   +Frank Nöthe +Ryan Ottaway Martin  

#squinch   #TheSquinch   #portrait   #portraitphotography  +PortraitTuesday  #PortraitTuesday
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Testing Dfine
Checking out the NIK collection and beside the poor online documentation dfine seems to rock. I'm pretty impressed how easy noise reduction can be.
Peter Quinton's profile photoAnna Rimovska's profile photoJohn Pham's profile photo
Yup Dfine and Color Efex Pro Tonal Contrast are my favorite. Been using Nik for years with great results.
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Waterdrop Bokeh

BMW World, Munich, Germany , 2016

It was snowing on that evening and I had to free the lens from droplets all the time. This was a shot shortly before I had to clean the lens again.

#hqsparchitecture +HQSP Architecture curated by +Rhonda Krause and +Dmitry Jurkov

#BMWWorld   #BMW   #CoopHimmelblau   #Architecture   #OlympiaPark   #Munich   #München  
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+Heiko Köster You're always welcome, my friend!
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Color Version of the "Different kind of Office Portrait"

B&W Version:


#zoom   #Frankfurt   #Ffm  
Shawn McClure's profile photoEric Delcour's profile photoHeiko Köster's profile photo
Danke +Eric Delcour 
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Heiko Köster

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Mediate, Communicate, Negotiate....
No matter what it takes, you get it done.
Frankfurt, Germany, 2016

See a different angle:
Making of:

#architecture   #nightphotography   #cityscapephotography   #zoom  

#hqspnight  +HQSP Night curated by +Ingo Bruneske +Alexander Tarasenkov
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Excelente !!!
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Have a nice weekend, too, +Igor Schevchenko 
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Anna Rimovska's profile photoBetty Manousos's profile photoHeiko Köster's profile photo
Thank you +Betty Manousos have a nice weekend.
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Exploring HDR
Revealing amazing details from my raw files, that I didn't see before. I should do more exposure bracketing in the future.

#hqsphdr +HQSP HDR curated by +Peter Lipa and +Dave Gen 

#allianzarena   #munich   #nightphotography   #nightlight   #hdrphotography   #hdr   #architecture   #illumination  
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I will check this out +Dave Gen . I already thought about running it separate, but just wanted to avoid the manual export / converion / import ..... but it if it's the only option ... Thank you for your support so far.
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  • Technical University of Dortmund
    Master of Computer Science
Basic Information
I love photography.

Member of Google + Crea(+)e (

On my day job I am a senior technical consultant at a software company. I work on workflows all day and at night I practice on my own workflow. The former I do for almost 20 years and the latter for more than five years now. So your constructive critique on my images is always appreciated. 

I am a moderator of the HQSP Community and I am working on #HQSPPortraits / +HQSP Portraits there. Once a week it's an honor to me to select the images for the HQSP Pyramid at +HQSP Gold.

Every other week I host the bi-weekly, alternating daily photo themes #LighthouseThursday / 

... and I'm exploring the various ways of digital photo manipulation ... I love to slide the controllers, to experiment and to watch what happens to the image ...

Unless otherwise stated the images published here are my work and under a "All rights reserved" policy. You are free to use the G+ share function, but for any further educational, business or personal use and  publications a written consent is required. If you want to use my images in any way, you can contact me by G+ notification or send me an e-mail by G+, thanks.
Don't force me to shrink my images to 500px or to blemish them with a signature, please.

Why I don't circle you back ?

  • you don't have a profile.
  • you don't share anything public
  • you don't share periodically
  • you aren't a photographer or interested in photography
  • my circles are close to the limit and I have to be selective on who I circle back. I can only circle 5K and by having 10K+ people circling me I simply just can't circle everyone back.
So don't circle me just to get circled by me.

I might circle you for two weeks, if you contribute to one of my daily photo themes for statistical reasons. But every two weeks I have to clean up those circles to make room for new contributors, so don't get mad on me for that,please.

I'm a computer scientist working as a Senior Consultant for a software company ... and I like photography.
I'm good at what I do.
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Frankfurt - Castrop-Rauxel - Dortmund - Witten
Heiko Köster's +1's are the things they like, agree with, or want to recommend.
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