Victor Engel

Victor Engel

Lives in Austin, TX
Joined on Dec 21, 2002

Comments

Total: 45, showing: 1 – 20
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On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

digidog: >>Working as a travel photographer, I tend to make a custom profile for each location area.

No need, the profiles are illuminant specific. You can build one for daylight, use it all day long, morning noon and late afternoon. This is illustrated (and you can test this yourself) here:

In this video, we’ll look into the creation and use of DNG camera profiles in three raw converters. The video covers:
What are DNG camera profiles, how do they differ from ICC camera profiles.
Misconceptions about DNG camera profiles.
Just when, and why do you need to build custom DNG camera profiles?
How to build custom DNG camera profiles using the X-rite Passport software.
The role of various illuminants on camera sensors and DNG camera profiles.
Dual Illuminant DNG camera profiles.
Examples of usage of DNG camera profiles in Lightroom, ACR, and Iridient Developer.
Low Rez (YouTube):
http://youtu.be/_fikTm8XIt4
High Rez (download):
http://www.digitaldog.net/files/DNG%20Camera%20profile%20video.mov

You're right. I'm wasting my time by continuing in this thread that you persist in leaning toward ad hominem. I will agree with one thing: the readers surely can decide for themselves who has valid points. Reading list may include posts from other forums here and other sites.

Direct link | Posted on Dec 20, 2015 at 04:03 UTC
On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

digidog: >>Working as a travel photographer, I tend to make a custom profile for each location area.

No need, the profiles are illuminant specific. You can build one for daylight, use it all day long, morning noon and late afternoon. This is illustrated (and you can test this yourself) here:

In this video, we’ll look into the creation and use of DNG camera profiles in three raw converters. The video covers:
What are DNG camera profiles, how do they differ from ICC camera profiles.
Misconceptions about DNG camera profiles.
Just when, and why do you need to build custom DNG camera profiles?
How to build custom DNG camera profiles using the X-rite Passport software.
The role of various illuminants on camera sensors and DNG camera profiles.
Dual Illuminant DNG camera profiles.
Examples of usage of DNG camera profiles in Lightroom, ACR, and Iridient Developer.
Low Rez (YouTube):
http://youtu.be/_fikTm8XIt4
High Rez (download):
http://www.digitaldog.net/files/DNG%20Camera%20profile%20video.mov

Digidog, your comments indicate your ignorance.

That doesn't read very well, does it? I suggest you refrain from that sort of talk and instead just discuss the issue.

Getting back to the point being discussed, I think it's very well established that the Adobe profiles for the 5DS cameras is different. They've essentially admitted that (not that it's worse, but that it's different). This is not news.

Direct link | Posted on Dec 19, 2015 at 22:09 UTC
On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

digidog: >>Working as a travel photographer, I tend to make a custom profile for each location area.

No need, the profiles are illuminant specific. You can build one for daylight, use it all day long, morning noon and late afternoon. This is illustrated (and you can test this yourself) here:

In this video, we’ll look into the creation and use of DNG camera profiles in three raw converters. The video covers:
What are DNG camera profiles, how do they differ from ICC camera profiles.
Misconceptions about DNG camera profiles.
Just when, and why do you need to build custom DNG camera profiles?
How to build custom DNG camera profiles using the X-rite Passport software.
The role of various illuminants on camera sensors and DNG camera profiles.
Dual Illuminant DNG camera profiles.
Examples of usage of DNG camera profiles in Lightroom, ACR, and Iridient Developer.
Low Rez (YouTube):
http://youtu.be/_fikTm8XIt4
High Rez (download):
http://www.digitaldog.net/files/DNG%20Camera%20profile%20video.mov

The profiles are wrong because they are inconsistent when compared to Adobe profiles for other cameras. The main issue in the result is not the cameras but the profiles.

Part of what we hope to achieve with profiles is consistency. The 5DS profiles have destroyed whatever consistency there was.

Sure, I can make my own profiles, but I didn't have to before this camera model.

BTW, taking video or pictures at various times of day does not challenge my assertion.

Direct link | Posted on Dec 19, 2015 at 20:34 UTC
On photo MICROLIFE in the Macro - Where did it go? challenge (7 comments in total)
In reply to:

Wildbegonia: Ii love it. What is it?

They are not beetles. They are true bugs (Hemiptera) from what I can tell.

Direct link | Posted on Oct 14, 2015 at 22:00 UTC
On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

digidog: >>Working as a travel photographer, I tend to make a custom profile for each location area.

No need, the profiles are illuminant specific. You can build one for daylight, use it all day long, morning noon and late afternoon. This is illustrated (and you can test this yourself) here:

In this video, we’ll look into the creation and use of DNG camera profiles in three raw converters. The video covers:
What are DNG camera profiles, how do they differ from ICC camera profiles.
Misconceptions about DNG camera profiles.
Just when, and why do you need to build custom DNG camera profiles?
How to build custom DNG camera profiles using the X-rite Passport software.
The role of various illuminants on camera sensors and DNG camera profiles.
Dual Illuminant DNG camera profiles.
Examples of usage of DNG camera profiles in Lightroom, ACR, and Iridient Developer.
Low Rez (YouTube):
http://youtu.be/_fikTm8XIt4
High Rez (download):
http://www.digitaldog.net/files/DNG%20Camera%20profile%20video.mov

The spectrum can change depending upon what is in the atmosphere filtering part of the spectrum selectively. Of course, in those situations, where the air is full of pollen (which can cause colorful halos) or dust, you may wish to use a standard daylight profile anyway precisely in order to capture the eerie effect produced by the unusual conditions.

Direct link | Posted on Aug 12, 2015 at 01:13 UTC
On photo The Sleeping Beauty in the Beautiful Bee. challenge (33 comments in total)
In reply to:

Why sad?

Direct link | Posted on May 27, 2015 at 00:50 UTC
On photo The Sleeping Beauty in the Beautiful Bee. challenge (33 comments in total)

I had a bush where these bees would perch like this every night. Amazing that chomping down on a twig is their most comfortable sleeping position.

Direct link | Posted on May 27, 2015 at 00:50 UTC as 9th comment | 1 reply
On article Create your own DSLR external battery pack (68 comments in total)
In reply to:

gerard boulanger: Why buying/carrying that when you can put 2-3 extra batteries in your pocket?

The last time I did significant video, I had three CF cards and three batteries that got rotated together. We did have a handy AC outlet for charging the batteries. If we didn't, we still could have charged them using an inverter connected to a car's cigarette lighter.

CF capacity was 32 GB. We rarely got close to filling them up. We generally ran out of battery first - this using a 5D Mark II.

I can see this being useful if the shoot involves long clips. If, like in our situation, you're shooting mostly relatively short clips, rotating batteries and cards works just fine.

We actually rotated more frequently than we needed to, because this was part of a 48 Hours Film project, so we wanted to get files to the editor ASAP. I suppose we should have aded Card and Battery Runner to the credits. :)

Direct link | Posted on May 2, 2014 at 16:09 UTC
On article Create your own DSLR external battery pack (68 comments in total)

If anyone follows the links for still use (because video is not available on the classic) on a Canon 5D, be aware it doesn't use the battery type linked under the title 5D. That battery pack is for 5D Mark II and Mark III. The 5D uses a different battery pack.

Direct link | Posted on May 2, 2014 at 16:00 UTC as 9th comment
In reply to:

Victor Engel: Not 500 times longer than in NYC but 500 times longer than in the previous facility, which happened to be located in NYC.

What has cave paintings got to do with anything?

Whoops. That should have been posted in reply to jkoch2's post.

Direct link | Posted on May 2, 2014 at 15:51 UTC

Not 500 times longer than in NYC but 500 times longer than in the previous facility, which happened to be located in NYC.

What has cave paintings got to do with anything?

Direct link | Posted on May 2, 2014 at 15:51 UTC as 10th comment | 3 replies
On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

Charlie boots: This sounds more like lightroom calibration to match the camera than camera calibration as the calibration is only appliccable when using lightroom and is only appliccable to a specific light colour. Change the location and the light and one needs to recalibrate for the new light situation. This then means that for each photo shoot there needs to be a new calibration. How does one then manage within lightroom as it is not possible to automatically have lightroom change claibration profiles automatically to match each photo shoot. This has to be done manually.

The main point of accurate color is CONSISTENT color. Use it as a starting point to make your faux colors consistently relative to a standard.

Direct link | Posted on May 1, 2014 at 18:44 UTC
On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

Vamp898: After several tests i can summarize that you dont have any advantage using this on a Sigma SD1.

If i take a completely uncalibrated Test-photo of the Color Checker with the Sony a99 and the Sigma SD1, the Sigma already shows all colors correct where the a99 seems obviously to change the colors to somewhat liking i dont know.

So for the Sigma owners, you most likely dont have any advantage as you already have a good camera.

So the Sigma SD1 knows about all possible light sources? I doubt it.

Direct link | Posted on May 1, 2014 at 18:40 UTC
On article Get more accurate color with camera calibration (238 comments in total)
In reply to:

WalPhoto: The information is partially incorrect - you can NOT create "a general" profile for all lightening situations combining the ICC profiles! This is not "my opinion", this is the fact color correction works. The ICC includes a mathematical matrix transformation from one color space (the concrete colors, how they came) to another color space (how they should have come). So, let's say you light a scene with a strong blueish light, e.g. flash, say with a blueish filter, to have the example even better understandable. Now you create the ICC: it will transform all the blue-cast colors to be more yellowish. This will DESTROY any image when applied to a total different lightening, say yellowish (candle light)! And interpolating those 2 extremes cancels their original reason for creation. I was running an ICC profiling service a few years ago, so I understand it a bit. Peace, Andrej

But you can create two different profiles, process the image separately with each, and then combine them in two layers as appropriate.

Direct link | Posted on May 1, 2014 at 18:39 UTC

Those are yellow and green flowers. What's white is the leaves, but I suppose most people do think of them as petals.

Direct link | Posted on Dec 11, 2013 at 18:38 UTC as 1st comment | 1 reply
In reply to:

panchoskywalker: I wish they'll come with equivalent lens for FF bodies.

Given same design, 1.6x larger in each dimension.

Direct link | Posted on Apr 20, 2013 at 00:37 UTC
On Article:4167497780 (12 comments in total)

I can't get Agfa Rapid film or process my exposed Kodachrome film anymore either.

Posted on Apr 15, 2013 at 12:47 UTC as 2nd comment
In reply to:

brunobarolo: With a one stop improvement, Panasonic may finally bring their sensors to the level where Sony sensors are today. Nice :-)

I'm skeptical this will have wide use. I see the potential for color cross talk that varies by lens and aperture.

Direct link | Posted on Feb 8, 2013 at 16:58 UTC
On photo Mother & Daughter in the Toes & Fingers challenge (2 comments in total)

Thank you, Steve. I'll have to recheck the original, but I don't believe I did any blurring. What you see is natural blur from a narrow depth of field I think. I used a 135mm f/2 lens, and if the EXIF shown can be believed, I unusually did not shoot at f/2. Any processing of the corners was probably post-crop vignetting, using white instead of black, in Lightroom. Again, I'll have to check the original to confirm.

Direct link | Posted on Nov 11, 2012 at 02:27 UTC as 1st comment
In reply to:

Michael Ma: I'm reminded every day by this rover just how fortunate we are to live on a planet like Earth. Blue skies and oceans, green landscapes, and every hue, saturation, and luminosity available to us from nature. Imagine if we lived on Mars and we put on probe on Earth. Every cell of my being would have an endless yearning to be at such a beautiful world one day, even if it was just for a second. But we are already here. Wow, what a incredible gift!

Earth is more beautiful to you precisely because that's where you grew up. Your very essence has been calibrated over the eons to take maximum advantage of what is available. If you had the same background but on a Martian setting, you'd be able to see things on Mars we don't, and Earth would look bland by comparison.

Direct link | Posted on Nov 6, 2012 at 16:35 UTC
Total: 45, showing: 1 – 20
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