[RobA_Oz]

Cross-post from the Post your K-1 photos thread:


Click on the image for the full Flickr experience.

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Last edited by RobA_Oz; 08-19-2018 at 05:38 PM.

[DimC]

Cross post from the Post your K1 pictures thread.


******
Last Saturday I went on a trip about 3 hours from Paris and away from Light pollution especially.
Very quiet place, about 1000m altitude and the weather was great, no clouds, not much haze and no Moon either.

The Galactic center was visible only for 90 mins, not really high in the sky but I wanted to try it anyway.
I've been using Photopills app to help me prepare my night, it is an invaluable tool for photography in general but of course especially for AstroPhotography.
The Night A.R is indeed very useful, I could easily pick up a location in the afternoon and be sure the MW would be in my shot where I wanted to be.

I placed the branch in the shot, it was lying there waiting for a photo I guess
I took about 80 shots, on and off Astrotracer, from ISO 800 to ISO 3200 and from 20sec to 80 seconds.
Lens is the IRIX 15mm /f2.4.
I tried some light painting but I was not confortable with it, so in the end I used a foreground shot illuminated by a car passing by.

If you look carefully you will see headlight and tailights from cars around, and also some dude playing around with a red helmet light or something like that.

As far as PP, I struggle a lot to be honest. I've been watching tutorial but I think my initial shots were not that great, not enough light IMHO. Also my sensor is suffering the white dot issue so I can't go past a certain limit of exposure time.
At the same time I think I didnt really master the astrotracer function, couldnt calibrate despite many efforts, far away from tripod, rocks etc. I tried at least 6 or 7 different calibration but was disapointed each time. I've read the PF tutorial a lot before actually trying the calibration.

So in the end Im using 3 shots for this composite :
Foreground is 30 sec exposure at /f2.8, ISO2000 astrotracer OFF.
MW is is 30 sec exposure at /f2.8, ISO2000, astrotracer ON.
Headlights and redlights is 20 sec exposure at /f2.8, ISO1600, astrotracer OFF.

PP using Lightroom and composite made with ON1 2018.

It has been a marvelous night, I was not alone and we drink some nice Rhum after the Galactic center disappeared

[Weevil]

I was lucky enough to capture not only one, but TWO falling stars on a 14s single exposure frame with the Milky Way in background. These meteors are from the Perseid shower that occurred recently. It took as much as 400 exposures between 10 and 30 seconds to get this result.


Deux étoiles filantes sur la Voie lactée / Two falling stars on the Milky Way


Pentax K-1 + Irix 15mm ƒ/2.4 Blackstone
14s, ƒ/2.8, ISO 8000
#irix15mm #PentaxK-1 #pentaxdslr #worldphotoday

[OzzRod]

I was lucky enough to capture not only one, but TWO falling stars on a 14s single exposure frame with the Milky Way in background. These meteors are from the Perseid shower that occurred recently. It took as much as 400 exposures between 10 and 30 seconds to get this result.

Applause! Wonderful image.

[riseform]

Trying to get my post count up to ten for the month...
K1 Irix 15 mm
Dream Lake, Rocky Mountain National Park around sunrise

[OzzRod]

Still enjoying my IRIX 15mm Blackstone on the K1



Mimosa Rocks National Park, NSW Far South Coast, Australia.

[OzzRod]

Another IRIX 15/2.4 Blackstone image taken with a K1, and using an IRIX 10-stop ND filter.



Mimosa Rocks National Park, NSW Far South Coast, Australia.

[TerryL]

Some interesting news from IRIX:

Irix presents its Edge 100 filter system

Baar, Switzerland, October 20th, 2017



The TH Swiss company would like to announce the expansion of its range of Irix accessories with the Edge 100 series filter system. Among new products, there will be a versatile holder – the IFH-100 - with dedicated adapters and a wide choice of 100x100mm and 100x150mm filters.

The Irix Edge IFH-100 filter holder
The Irix IFH-100 is a universal filter holder designed for size 100mm filters. Its lightweight compact construction and bayonet adapter are created especially for the Irix 15mm f/2.4 lens, allowing the use of two filters at the same time without any vignetting effect. The construction of the filter holder base on the removable adapters allows for quick and easily attachment to the lens, along with free rotation around the optical axis when using the graduated or polarizing filters.

The ability to use removable adapters with thread diameters from 67mm to 82mm means that the holder can be used with lenses produced by Irix in the future, along with other brands. Each adapter has an additional thread for attaching the cap to the lens.

The filter holder is made of an aluminium alloy, which guarantees the high strength and stiffness of its structure. This has enabled to get an extremely compact size while keeping wide functionality, along with an aesthetic design together with the whole Irix product line. It is worth mentioning that the IFH-100 is the lightest holder of its class. The front surface of the filter holder is covered with a light-absorbing velvet fabric that blocks access to the side light, what is especially important when using high density optical ND filters.

The Irix Edge 100 filters
With the introduction of the IFH-100 filter holder, the Edge 100 series filters will also be available in two formats. The first, size 100x150, will contain gradual filters with a soft and hard transition, and also a reversed gradual filter dedicated to taking pictures of sunrises and sunsets. These rectangular filters will be available in ND4, ND8 and ND16 versions. In the square format, Neutral Density filters with densities ND32, ND128, ND1000, ND1000K will be available for the 100x100mm, along with a polarizing filter. There are future plans by the manufacturer to introduce filters which reduce light pollution.

This would be nice, but it doesn't exist.
Terry

[OzzRod]

Another day, another visit to Mimosa Rocks N.P. on the Far South Coast of NSW, Australia. The sun was out late in the afternoon, and there was a lazy little swell slopping into the bay. This is a 30 second exposure using my K1 with IRIX 15mm Blackstone and an IRIX screw-in, 10-stop ND filter. Appears much sharper on Flickr.

[OzzRod]

And here's one taken this evening. K-1 hand held, with IRIX 15 wide open (F2.4) and the lens about 15 cm from the circular metal brace. Minor crop after rotation.

[TerryL]

Another day, another visit to Mimosa Rocks N.P. on the Far South Coast of NSW, Australia. The sun was out late in the afternoon, and there was a lazy little swell slopping into the bay. This is a 30 second exposure using my K1 with IRIX 15mm Blackstone and an IRIX screw-in, 10-stop ND filter. Appears much sharper on Flickr.

This picture is great.
Terry

[TerryL]

Hello Folks,
I'm curious, what filter holder do you use for the Irix 15mm?
Thank you,
Terry

[wgosma]

Looks like IRIX has finally got their new holder for their 15mm lens up for sale in Europe...this looks like what I’ll use as it will support my existing filters.

[TerryL]

Looks like IRIX has finally got their new holder for their 15mm lens up for sale in Europe...this looks like what I’ll use as it will support my existing filters.

Excellent! I'm getting that when it comes to the USA. Thanks.
Terry

[TerryL]

Looks like IRIX has finally got their new holder for their 15mm lens up for sale in Europe...this looks like what I’ll use as it will support my existing filters.

Hello,
Where do you see it in Europe? Even though I'm in the USA, I'll buy it anyway. Thank you very much.
Terry