Lives in United States Bellville, TX, United States
Works as a Retired Engineer
Has a website at kronometric.org
Joined on Dec 15, 2011
About me:

Interested in Foveon technology but am no photographer.


Total: 23, showing: 1 – 20
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On photo Stripes of shadow and light in the Shadows challenge (8 comments in total)

Very nice composition indeed!
I would be inclined to clone out what looks like a nipple which distracts me from the subject of shadows, TBH.

Link | Posted on Mar 20, 2018 at 22:02 UTC as 1st comment | 1 reply
On photo Top Gun-2783 in the Action Film Titles challenge (16 comments in total)

Can't be too far from the ship, dude's already got his hook down ;-)

Link | Posted on Mar 16, 2018 at 01:44 UTC as 6th comment | 1 reply
On photo Welcome to the Future... in the The Shape of Things to Come challenge (12 comments in total)
In reply to:

Albert Valentino: Well done. Looks like a Borg

I would have preferred Seven of Nine . . .

Link | Posted on Nov 14, 2017 at 14:54 UTC
On photo Carla... in the Beautiful caucasian female faces challenge (31 comments in total)

Absolutely stunning subject. As has been said already, even the thumbnail draws the eye. The smile and eyes are worthy of the Mona Lisa re: inscrutability.

Link | Posted on Jul 21, 2017 at 19:27 UTC as 4th comment
In reply to:

CameraLabTester: Nice work!

Flouride will make the lens have VR, IS and OSS qualities.

Don't tell anybody...



How about Fluorite?

I promise not to tell ;-)

Link | Posted on Jun 22, 2017 at 16:52 UTC
On article Sigma SD Quattro H Review (645 comments in total)

"photons of different colors have different amounts of energy and more energetic light would penetrate further into the chip."

OOPS, Richard!

Link | Posted on May 31, 2017 at 17:35 UTC as 137th comment | 8 replies
In reply to:

Contra Mundum: What's the hubbub? DNG can only represent Bayer raw formats. The Sigma DNG is a just a TIFF in DNG container. Your raw is already cooked in DNG.
The difference with jpeg is mostly in the number of bits. So you could as well edit the jpeg files from the camera with the same success, except for the pictures that require a serious surgery, which are probably not worth saving anyway.

"DNG can only represent Bayer raw formats. The Sigma DNG is a just a TIFF in DNG container. Your raw is already cooked in DNG. "

Shows how much you know about DNG, specifically Linear DNG!



Link | Posted on Apr 10, 2017 at 01:07 UTC
On ChallengeEntry:937861 (12 comments in total)

+1 for the Human League quote . .

I like the contrast of smooth against industrial :D

Posted on Oct 12, 2015 at 15:19 UTC as 7th comment
On article Mono a mono: Leica M Monochrom (Typ 246) hands-on (717 comments in total)
In reply to:

alexisgreat: I love my sensors bare, no filters allowed. That means no Bayer, no AA, no IR/UV cut filter. I add filters as I please, whether they be for narrowband imaging for light polluted areas or broadband color imaging or even UV or IR imaging.

I hate how manufacturers decide whats good for us and they add the filters "built-in" and cater to the lowly masses. I like building my own computers, telescopes, and cameras. It's how you LEARN. No wonder society is being dumbed down- no one likes to innovate anymore.

Well said!

I agree with the sentiment 100%

Link | Posted on Aug 31, 2015 at 12:47 UTC
On article Mono a mono: Leica M Monochrom (Typ 246) hands-on (717 comments in total)
In reply to:

Stephen Williams: There are many claims here about the superiority of a monochrome sensor over a color sensor. Could someone please supply a reference (URL) where there are samples showing direct comparisons of files made under controlled conditions?

credible references are unpopular in photography fora and quite rare ;-)

Link | Posted on Jun 30, 2015 at 12:50 UTC
On article Mono a mono: Leica M Monochrom (Typ 246) hands-on (717 comments in total)
In reply to:

Timmbits: Does anyone know if it is possible to mod existing cameras, to B&W, by removing the color filter?
Not having an RGB filter results in massive sensitivity gains... not to mention that every photosite is acting to sense the presence of ALL light - meaning you have effectively tripling resolution/sharpness - or quadrupling it if you take into account that there are two green for each blue and red pair.
You'd most likely have to use good UV filters again as back in the film days.

1) Buy a Sigma SD1M. 2) Remove the "dust cover" UV/IR filter from the lens mount (not even a screwdriver needed). 3) in Sigma Photo Pro, convert to monochrome.

Job done ;-)

Link | Posted on Jun 20, 2015 at 23:38 UTC
On photo POWER in the Rainy day - Black and White challenge (7 comments in total)

As a Texas resident, I love power pole shots.

Nicely done, I must try that monochrome look.



Link | Posted on Jun 10, 2015 at 21:01 UTC as 3rd comment
On photo GOING BANANAS in the Banana. challenge (7 comments in total)

Fibonacci springs to mind . .


Link | Posted on Mar 4, 2015 at 16:11 UTC as 2nd comment
On photo blackAndWhite in the Unusual Insects or Spiders challenge (2 comments in total)
In reply to:

RuthC: This is a very interesting beetle, which I learned from Google, is a Southwestern Ironclad Beetle. Its exoskeleton is extremely hard. See:
for further enlightening information.
Ruth :-)

Thank you, Ruth. Being an English xpat, I don't know the names of many of the species around here.

Link | Posted on Aug 11, 2014 at 13:32 UTC
On article Nikon D4s First Impressions Review (1027 comments in total)
In reply to:

TWIZEEL: just wonder if I'm alone here who dont care those curves ? Make shooting guys, stop to be addicted those beauty S : )))

. . . and here we go again playing the 'Real Word' card and implying that those with technical knowledge can't take good pictures because they're too busy learning about their cameras. Sad.

Link | Posted on May 13, 2014 at 00:43 UTC
On article Get more accurate color with camera calibration (245 comments in total)

The procedure did not work in ACR 5.4 for Foveon X3F files. No matter where I put the .dcp profile on the HD, it was not shown in the ACR tab - only "embedded". Not being a great lover of Adobe anyway, I gave up on that - being most unwilling to include DNG in my workflow.

Link | Posted on Apr 29, 2014 at 15:52 UTC as 33rd comment | 1 reply
On article Exposure vs. Brightening (33 comments in total)
In reply to:

walkaround: I don't know where this term "brightening" came from. It's GAIN, since this is signal amplification we are talking about. "Brightening" implies there is no downside, but there is: noise.
I would like camera buttons to say "Gain" instead of "ISO"... but current cameras and the people who use them (myself included) are still in a film mindset for many things. You probably won't change this any time soon.

Good article.

Re "The photons that fall on the sensor during exposure release electrons" is not quite correct although you might be keeping it simple for most folks. But only some of the incident photons release electrons (Google "Quantum efficiency").

Different software "brightens" images in different ways. Some change the slope (i.e. the gain) of the characteristic, some move the characteristic up and down and others actually change its shape. So, to me, "brightening" serves only as general term, as opposed to your definition of "exposure" which is spot on, IMHO.


Link | Posted on Aug 29, 2013 at 15:20 UTC
On article 5 Reasons why I haven't used my DSLR for months (593 comments in total)
In reply to:

Virtually Grey: It's a Supermarine Spitfire, not a Seafire. Or is it known by another name outside of the UK where they were made?

You may not have noticed the Navy colors, the big arrestor hook at the back end, the words "Royal Navy" on the fuselage and the Navy serial number.

Link | Posted on Jul 31, 2013 at 20:59 UTC
On article Photokina 2012 Roundup (102 comments in total)
In reply to:

Shamael: On Samsung Galaxy.

"It's hard to imagine how the added convenience of full-time internet access will change the way you use a camera, but we suspect a lot of its success will depend on how the mobile contracts required end up being priced"

Ask the users of the new I-phone what it costs. All this nonsense is only made to suck your money, make Internet Provider earn more on your back. On the end, this, "you need to be connected", is a big scam only. Nobody needs nothing except to die. This is commercial brainwash, nothing more. They locate you by your cellphone and it continues by your laptop, your camera-phone, and now your camera, and so on.

Where will it end. We communicate all about us to just anyone on the globe and despite that we don't know who is our neighbor in the building we live or what happens in the bar around the corner. Brave new world we live in, isn't it.

Well said, Shamael!

All too often, innovation brings with it a further invasion your of privacy. Witness your Google account's home-page which was OK at first and then suddenly appeared their "chat" function which couldn't be removed - I wonder why? Eavesdropping??

Link | Posted on Sep 28, 2012 at 14:16 UTC
On article Adobe announces Photoshop Elements 11 (69 comments in total)
In reply to:

larrytusaz: I'd consider this as an update to my Photoshop CS (yes I have the ORIGINAL Photoshop CS), but Elements doesn't support 16-bit TIFFs, and when I shoot RAW, I convert to 16-bitt TIFF, do all of my edits there, and then once I'm 100% done I convert to JPEG, no sooner.

I know Elements can't include all of the Photoshop features, it's just too bad because 16-bit TIFF support is the only thing, for me anyway, that it's missing.


I don't understand what is meant by "support" here. In Elements 6, I can open 16-bit TIFF's and edit them in Adobe's 16-bit work space.

Link | Posted on Sep 25, 2012 at 14:51 UTC
Total: 23, showing: 1 – 20
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