I had the pleasure of speaking with Carl Olson of 16 x 9 Cinema who runs the Digital Convergence Podcast. He interviewed me about HDR photography, HDR Video and in the process I also explained a little about how I got started and a bit about my typical workflow.

The podcast where I discuss HDR – HDR Video is linked on his blog HERE.

==============================

Show notes & his iTunes feed is on his blog and I’ll repost that and shownotes below as well:

AAC (iTunes) version here: Digital Convergence Episode 5

RSS Feed: Subscribe to the 16×9 Cinema Digital Convergence Podcast

Subscribe in iTunes here: 16×9 Cinema Digital Convergence Podcast

Links from the podcast:

My Website: Digital Coast Image

Michael James on Twitter: HDRphotography

Jay Burlage – HDR filmmaker (Michael James cites Jay as a leading source of information on the OpenMoco project and creator of gorgeous time-lapse cinema. Check out Jay’s video below.)

Jay Burlage on Twitter: MiLapse

Jay Burlage’s YouTube Channel: MiLapse

OpenMoco – Open-Source Photographic Motion-Control

Promote Control

LR/Enfuse – Enfuse for Lightroom

Red Epic / Scarlet

The Sigma SD15 has been announced.  Actually it was first announced at Photokina 2008, but has just been “re-announced” with some additional detail.

SIGMA SD15 PHOTO above taken from DPreview.com news release which has camera specs and Sigma’s official press release linked HERE.

Of particular noteworthiness to me in Sigma’s Press Release is:

“”"… a 21 shot raw buffer at 3fps and 5 frame auto bracketing for HDR-enthusiasts.“”"

The SD14 [which I shoot with weekly] maxes out at a buffer of only 6 shots and for bracketing it can do 3 AEB +/-3.0EV (which Sigma has been able to do since 2002 with the SD9).  The Sigma SD15 now sports an auto-bracketing mode of 5 shots but rather than up to 3.0EV jumps between shots, TURNS OUT THE MAX JUMP FOR 5  AEB IS 1.7EV JUMPS BETWEEN. Still quite impressive and wider than you can get with 3 AEB with the SD14.

In fact, that makes the SD15 the leading entry level DSLR in terms of capturing a huge dynamic range.  The Sigma SD15’s 5AEB is going to be amazing for auto-bracketing for HDR.

I had uploaded a very, very quick and sloppy imprompu video to YouTube last year that shows how I conceptually use the dials on the SD14 to get a 6 frame capture for HDR use. The dials are the same on the SD15 so this video is helpful if you wanted to see how quickly you can make adjustments without digging into an LCD menu system like some DSLRs on the market.  The YouTube links is HERE and I’ll embed a smaller version below.

SD14 Auto Bracketing Video

Sigma 8-16mm f/4.5-5.6 DC HSM for APS-C sized sensors has just been announced by Sigma. Sure to be a favorite for landscape and architectural photographers.

Probably the most encouraging thing about the release is how several of the lens elements have been upgraded over coatings used for their other wide angle offerings.  Performance from this lens should be solid, but I’ll be reviewing it once I’ve gotten my hands on one and shot with it.

Also, generally the widest end of a zoom will be a tad soft in the corners so this lens “should” improve in quality as you zoom in a tad.  It might be possible that at 10mm it will be sharper than Sigma’s current APS-C wide angle zoom offering (which I own and use on a Sigma SD14).  I’ll be able to compare the Sigma 8-16mm f/4.5-5.6 DC HSM to the Sigma 10-20mm f/4-5.6 DC HSM head to head.

The Sigma 8-16mm f/4.5-5.6 DC HSM is equal to the following 35mm equivalent on the following cameras:

Nikon APS-C cameras = 12-24mm (35mm equivalent)
Pentax APS-C cameras = 12-24mm (35mm equivalent)
Sony APS-C cameras = 12-24mm (35mm equivalent)
Canon APS-C cameras = 12.8-25.6mm (35mm equivalent)
Sigma DSLRs = 13.6-27.2mm (35mm equivalent)

Sigma has also announced the following lenses:

Sigma 85mm f/1.4 EX DG HSM

Sigma 70-200mm f/2.8 EX DG OS HSM

Sigma 50-500mm f/4.5-6.3 DG OS HSM

Sigma 17-50mm f/2.8 EX DC OS HSM

NEW CAMERAS

Sigma SD15 ==> which now has 5 AEB at +/-3.0EV (that’s huge!!!)

Sigma DP1x

Sigma DP2s

And finally, last but not least, they have updated their RAW processing software program SIGMA Photo Pro to 4.0 which now is multi-core aware and is claiming it will improve IQ for all cameras.

White balance for digital capture is actually similar to days of film in some regards. Especially relevant when dealing with tungsten lighting when shooting stills or video. Why?

Again, tungsten light is a dynamic-range killer, and using  your camera’s custom white balance abilities can’t fight it alone. If you value using every ounce of the dynamic range of your sensor, it is important to make adjustments to light temperatures BEFORE the light hits the sensor.  Dynamic range is measured from the noise floor, which is affected by blue-channel noise. Using a blue filter in tungsten lighting will help allow your camera’s sensitivity perform as well as it does in daylight color white balance where channels are more even (RGB).

In real estate photography this becomes extremely common and relevant where the goal is to find ways to INCREASE dynamic range. You certainly don’t want to make your life more difficult by relying solely on a camera’s custom white balance.  And if you are bracketing for HDR and you are concerned about noise???… well this is just as relevant.  Because most shots are taken from a tri-pod, the loss of stops using an 80-A 80-B or 80-C filter are less dramatic then if you hand hold shots.

Dynamic range of a camera’s sensor varies per model. Some manufacturers are better than others. The chart below shows scientific, but real world results of testing a camera sensor’s dynamic range. The tests were done by DXOmark.

Bigger is better when it comes to Dynamic Range of a sensor. It means you can capture more shadow detail and more highlights in a single shot. If you shoot architecture or landscapes you already appreciate the challenge of capturing a high contrast scene that has a massive dynamic range.

For HDR captures, this is incredibly relevant because an HDR file is only as good/clean as the RAW data you feed into the merge.

You can see below that Fuji was WAY ahead of it’s time with the S3 & S5 (fuji’s S3/S5 results apply when using the extended dynamic range feature which is controlled by a camera setting). It is no wonder that so many wedding shooters swore by that camera for shooting beach weddings and other high contrast scenes. As of now only the D3x can better the dynamic range of a S3 or S5 in one single shot.

The relevance to High Dynamic Range Imaging is the following. Lets say you capture a bracketed sequence with only 3 shots. Which of those cameras above do you think will give you the best data to work with when merged to HDR? Remember, an HDR file is only as good/clean as the RAW data you feed into the merge. If each RAW shot you feed into a merge to HDR has by itself a large dynamic range, then you increase the quality of the HDR file.

This is why I groan when I see someone shooting with a Nikon D3x or Fuji S5 Pro say you only need to take X shots to get X results.  Each camera is completely different in terms of its ability to capture dynamic range so when you limit your bracket to only 3 shots, the dynamic range of your sensor becomes incredibly relevant. As you fill in the gaps and take more shots with tighter EV steps it fills in data gaps and provides cleaner RAW data for the entire range.

I first touched on the subject of dynamic range of camera sensors about six months ago and there is a little more insight in that post which is linked HERE.  Other articles surrounding dynamic range, auto bracketing and FPS capture are linked as follows:

Autobracketing for HDR – Camera Specs

Fastest DSLRs for HDR Capture (wide AEB range only)

When I see someone say their HDR files and tonemapped images have noise issues, my first question is? How many shots did you take and what EV step between?  Because I can tell you I have ZERO, NONE, NADDA, ZILCH, GOOSE EGG issues with noise in my files.

Why?  Because I bracket big and tight.  Sometimes I’ll bracket a scene with 13 images at .7EV between steps or even more shots with only .3EV steps between.  And yes, it takes a lot longer to merge to HDR, but it also means the averaging that occurs in software from darks to lights between the RAW data you feed it will result in BOTH cleaner data (less noise) and milder hue/saturation shifts (better color reproduction).

I get asked weekly how my images look so free of noise, natural and how I control saturation levels.  That last paragraph is HALF the battle folks.  It took me about 2000 HDRs to finally figure that out and even though I recently crossed 13,000 commercially delivered images tonemapped from HDRs, I’m still learning and tweaking.  I’m far from satisfied with my own results.  It is a constant challenge for myself even to fight “overcooking” images to the point that a client comments “it looks fake”.

It is critical that you understand my goal is to get to the point that someone can’t tell I’ve employed a High Dynamic Range Imaging workflow / pipeline. I’m not there yet.  If your goal is to create colorful and possibly more saturated images than I am gearing for then you might not want to bracket tighter like I do because when luminance ranges get stretched in software using only 3 shots from an AEB sequence it by default will create hue shifts and saturation issues that you might actually want for your images (particularly if you are going for artistic and/or grunge looks).

Even if you don’t shoot for HDR I hope the chart at least enlightens you to the abilities of those camera models.  I’ve purposely eliminated the medium format cameras that DXOmark has on their site.  If you go to their site and want to check these stats out yourself then look for the following tab on their site (image below). When you do, that data will populate the field on the right so you can see the various cameras and how they stack up.  The X axis shows time so you can see when each was released in comparison to others.

Lens distortion correction can be achieved using PT Lens. It is available for both the PC and the Mac. I often forget about these little tools that make a huge difference in image quality. If you shoot real estate or architecture, you need PT Lens to remove bowed lines that should be straight.

I often get asked how I deal with distortion typical with wide angle lenses and PT Lens is something I’ve been using since 2007 when I was googling around for lens distortion correction solutions. That and I tend to try and get my tri-pod to about the mid-point of the room. Obviously a tilt and shift lens is ideal to not have to deal with this in post, but on capture.

Rather than grab photos from their site and post them here, you should use their interactive options to see before and after photos to get an idea of how it corrects lens distortion.

The link to PT Lens main web site HERE

From their navigation on the left, choose “Examples” to then view before and after photos. I’d link it directly, but I think they are using frames on their site and I didn’t see a different URL.

And an alternative for Mac users…

Back in 2007, there was no Mac solution so I used an alternative developers plugin that uses the PT Lens database.  Word of advice, if you need to use this other plugin (linked below) instead of PT Lens (such as if you are still running 10.4), make sure you SAVE before you launch the filter in Photoshop because it has caused PS to crash on me before (normally fast clicking through the dialogs has caused crashes).

Kekus Lens Fix

HDR Timelapse is only supported in a fully automatic way using the most expensive cameras. They allow you to “Set and Forget” so you can leave it on a tri-pod to capture away. Some cameras have timelapse, but can not combine both timelapse along with capturing brackets for HDR.  Automated HDR Timelapse is something that exists in the semi-pro to pro cameras that costs many thousands of dollars.  That is about to change.

Promote Control

I covered the Promote Control in detail the summer of 2009 ( BLOG POST HERE ) and even created some getting started videos which are embedded in that blog post.  A link to their website is also listed on that blog post if you want to view which cameras are supported.

The Promote Control allows extended HDR capture with cameras that both don’t have a HDR mode or a limited HDR mode (such as 3AEB).  The Promote Control also has a separate Timelapse feature as well, but you couldn’t use both HDR Mode and Timelapse Mode at the same time.  Soon you will be able to do just that.  The Promote Control is being worked on (the firmware specifically) to allow HDR Timelapse.

Because the Promote Control connects via USB, this means cameras that only cost hundreds will be able to do what pro bodies that cost thousands can do.  Automated HDR TImelapse capture. The developer has indicated it is now at the top of the cue for the next firmware update!!!

The 72 dpi myth was something that had me scratching my head years ago.  I was wanting to use some high end compositing packages to edit photos, but I was concerned about the fact that they deal in video “speak” and 72dpi was/is the norm.  So I was wondering how I could get an image I was working on in 300 dpi, there and back and not lose resolution.  I felt so dumb when I found out about the whole DPI myth and how it was/is tied to legacy printers, etc.

I still get people losing sleep over this stuff so I’m going to link a site with a ton of info on it.  There are a TON of other sites online.  If you want more opinions, just google:

72 dpi
72 dpi myth
The DPI Myth

…etc.

All About Digital Photos
http://www.rideau-info.com/photos/index.html

The Myth About DPI
http://www.rideau-info.com/photos/mythdpi.html

How to Properly Change DPI
http://www.rideau-info.com/photos/changedpi.html

I hope this helps clarify.

HDR tutorial requests about my high dynamic range imaging workflow have come in via email (my photography site email) for a couple of years now. Again a couple more last night, but this time through the form on this site that I finally “fixed”.

So my question is… what do you need help with the most? Use the Contact Me page to send me what area you need help in the most whether it be HDR Capture (camera settings), choosing a camera for HDR Capture, HDR Post Production like HDR in Photoshop or HDR in other apps, Tonemapping, or otherwise.

In 2006 when I first heard about HDR there was very scarce information online to work off of.  HDR Tutorials were geared towards grunge looks and I was seeking to provide my clients nearly photo realistic looks for real estate work. Back then there were very few players in the market for applications and I decided to just use Photoshop from Merge to HDR – to tonemapping – to final tweaks.

Late last year weather turned bad here for weeks so I took some time to peek around the net and even some books at Barnes and Noble just to see what was out there in terms of HDR Tutorials and HDR Training.  I was amazed to see so many “gurus” or folks posting tutorials either slamming Photoshop for HDR work or quickly moving folks on to Photomatix because the sliders are easier to work with for beginners.  The slider issue I understand totally, but the steering away from Photoshop for HDR work I don’t get at all.

For example, one of the many things I like about using Photoshop for HDR is it is a complete high dynamic range pipeline from raw to final output.  That and you can view the entire exposure range in pieces simply by opening up multiple windows of the same view.  You navigate to the top menu to WINDOW>ARRANGE>NEW WINDOW and presto, another window of the same file you are working on opens in a new window.  If you just merged to HDR here in 32 bit space in Photoshop, then this second window has another exposure slider at the bottom to change at will that has no impact on the file, it is simply for viewing purposes.  You use the slider at the bottom of that new window to adjust the exposure range of the image you want to view in that one window.

That slider  is NOT some kind of adjustment layer, it is just for viewing purposes.  So you can open multiple windows, place the exposure slider to various under/over exposed settings so that as you make changes to the document here in 32 bit space, those changes update in each window.  This way, you can make local or global changes using various adjustment levels over either parts of the image or the entire image and see the results across the ENTIRE exposure range via viewing the multiple windows you’ve opened.

Here is a screen capture to understand what I’m talking about.  What you see is nine windows opened and I’ve adjusted the exposure slider at the bottom of each window.  I took that screen capture after I had merged to HDR and before I made my tweaks in Photoshop in 32 bit space.  Once I finished my adjustments and then tonemapped out to a 16 bit TIFF, I made some final tweaks right there in photoshop and the image on the bottom was the result.

Photoshop is VERY capable at creating photo real images as a single application pipeline – from Merge to HDR to final output right in Photoshop.  I would say if Photoshop’s pipeline has a major fault it is that it is TOO GOOD at keeping saturation levels under control and makes creating grunge and technicolor images a more difficult process because it doesn’t over saturate colors and it doesn’t create wacky artifacts like other applications do.

It blows me away when I see “gurus” poo pooing photoshop as being lacking for editing HDR images.  There are so many things you can do right there after merging to HDR waaaaaaaay before you ever go to the menu to choose IMAGE>MODE>16 bit to tonemap it down.  And you can work in layers in 32 bit mode just as you can in any other mode so if you know photoshop well already, then why are you taking your HDR images to other applications, then bringing them back to photoshop when you could just do everything right there in Photoshop?

Give it a chance.

I can’t provide a link to an online tutorial showing how to take advantage of the full capabilities of Photoshop’s HDR workflow because I never found anyone else using it like I do.  I’m sure others use it this way and they are either too busy shooting to create tutorials (I can relate to that) or such tutorials do exist and I never found them.

Like I said, with nobody to turn to in 2006, I just starting farting around in Photoshop and eventually figured stuff out on my own.  Even Photoshop CS4 still has ZERO help files for working this way in 32 bit space, which is probably why so many folks use Photomatix Pro and the like.

I can’t believe this.  My Contact Me page?  You know, the one that has been up there for a year and a half. I had the form going to an email address I never created on the server!

IDIOT!!!!!

Totally my fault.

I apologize to anyone that used that form to send me a question or message and wondered why I never got back to them.

Now I finally understand why people use my photography’s website email to contact me regarding HDRIBLOG.  Yet nobody every mentioned to me or asked me why I didn’t respond to their questions submitted through HDRIBLOG.

I am so sorry.

I can capture HDR and Tonemap, but clearly challenged by wordpress and web basics.

The Contact Me form now works.  I tested it a few times and it worked. Clearly, it is now idiot proof.