Thursday, October 18, 2012

Nikon EH-6 secrets, part 6

Small update to blog post, since new Nikon consumer & pro DSLR's have been released and already on the market:

-D800/D800E: not compatible to EH-6 (uses EH-5B; with adapter EP-5B).

-D600: not compatible to EH-6 (uses EH-5B; with adapter EP-5B).

-D4: compatible to EH-6B, but requires EP-6 adapter (dummy battery with EH-6 input connector)

Sunday, April 1, 2012

Imaging laptop, display problems

Few times, during last months there is display color problem. Display is not physically broken. It displays colors properly - when no requirement for accurate color reproduring, like image processing.

When problem appears, some colors in the normal palette are displayed wrongly. Usually hues of green are totally lost. And bright blueish and shades of grey - have strange color cast. Same applies with skin tones, those are looking like pink shades. Restarting of the laptop, solves problem.

The problem could be (?) related to the Intel display adapter /video drivers. I updated drivers, and the usage of laptop will tell - does it help to cure the problem.

Tuesday, March 27, 2012

Nikon D200 problems, part 3

Unfortunately, again problems with my Nikon D200 body. This time it is visible in the the raw -images already.

There was noticed strange banding all over the image area. Narrow stripes are located closely to each other. In a portrait image, stripes are visible as horizontally. The phenomenon gets worse, when the camera is exposed to low temperatures, like -20C and below that. I am not sure, is this a typical behavior for D200.

Two images attached, lower one is scaled from original to 800pix in height. Banding is only slightly visible. Upper image is direct crop in the middle of image, without scaling.


Wednesday, March 21, 2012

Winter scenery and halos

Little bit over one month ago, I had a trip to Pallas / Yllästunturi national park at northern Finland. We were snowshoeing there, with few colleagues from my company's photography club. These was cold and fresh winter air available, here's two halo images as sample:


Monday, March 19, 2012

ISS and Moon (19.3.2012)

Yesterday I got another alarm from CalSky -service, this time also ISS crossing the Moon disk. It happened at 19th March 2012, little bit before 8am - in Finnish local time. Not even a chance to observe, sleet was falling from the sky. Waiting for the next passing then...

Sunday, March 18, 2012

ISS and Moon (18.3.2012)

Approximately one week ago, I got email alert from the CalSky service. It predicted that the ISS would pass across the Moon disk at southern Finland, on Sunday morning 18th March 2012. The time for the crossing was 07:13:02 local time, re-checked yesterday - schedule was 07:12:57.

I tried to prepare equiment for taking image sequence of the ISS, with Nikon D200 and C8 OTA. Also found out that memory buffer at D200, fills is pretty quickly - max 5s sequence at 6fps. It would have needed at least 10...15s of buffer, because the passing of ISS would propably (?) change some seconds of the predicted time.

Another problem would been carrying the C8 scope to suitable place, since I do not have a car. On top of the building - there would be high place, but metal fence blocks the visibility. So then, waiting for the next passing of the ISS over moon or sun disk...

Monday, February 20, 2012

Optics Picture of the Day - Fograys

Few days ago I got my image published at Les Cowleys site, you can see it here. Image was taken at Myllykoski, near the city of Kuusamo in February 2011.

That particular place is suitable for photographing fograys, since on many clear winterdays with sunshine - fog rises from the unfrozen river and sun draws it beautiful rays to patchy fog layers.