Push to Open
Wed, 12 May 2010
I've been pushing myself a little harder
this year to enter photos in the photo club
assignments (see my New
Year's resolution post). While I
was on my honeymoon, I came across a
scene that struck me as being a good
candidate for the May photo club topic
of "Low Key." There is a lot of
controversy within the club about what
photos qualify as low key. It's no
wonder, what with all the conflicting
definitions floating around.
Cleveland Art and History defines it as
"Consistent use of dark values within a
given area or surface." Another
website defines it as "The dark
end of the tonal scale. In a lowkey
[sic] image the picture is dominated
by shadows."
Joseph's Glossary of Film Terms calls
low key "a method of lighting often found
in mysteries and thrillers which emphasizes
shadows and pools of light."
The Random House Dictionary® defines low key this way: "(of a photograph) having chiefly dark tones, usually with little tonal contrast." The Collins English Dictionary defines low key as "having a predominance of dark grey tones or dark colours with few highlights." Perhaps my favorite explanation, which is too long to quote here, comes from Encyclopædia Britannica. The point is, nobody really seems to know for sure exactly what low key is. It is one of those "I know it when I see it" subjects that defies succinct and concrete definition.
So, with that very long lead-in out of the way, I must say that I was surprised at what the photo club judges considered "good" low key photographs. Not that I disagreed with them, I was just surprised. My entry for the category, shown below, won a Silver Award and tied for high score of the night.
The Random House Dictionary® defines low key this way: "(of a photograph) having chiefly dark tones, usually with little tonal contrast." The Collins English Dictionary defines low key as "having a predominance of dark grey tones or dark colours with few highlights." Perhaps my favorite explanation, which is too long to quote here, comes from Encyclopædia Britannica. The point is, nobody really seems to know for sure exactly what low key is. It is one of those "I know it when I see it" subjects that defies succinct and concrete definition.
So, with that very long lead-in out of the way, I must say that I was surprised at what the photo club judges considered "good" low key photographs. Not that I disagreed with them, I was just surprised. My entry for the category, shown below, won a Silver Award and tied for high score of the night.
I'm not sure my photo neatly fits any of
the definitions I found. The glut of
definitions and their conflicting natures
once again highlights the very subjective
nature of art. Nevertheless, I knew it when
I saw it and I'm glad I decided to shoot
it.
|
A Case for iPhone HDR
Tue, 09 March 2010
Some may wonder why anyone would want to do
high dynamic range (HDR) photography on
their iPhone. I have to admit, I wondered
that myself when I saw the TrueHDR app in
the App Store. What I've found over
the past few months of playing with
TrueHDR (v1.0.1 at the time of this
writing) is that it can help make up
for some of the iPhone camera's
deficiencies.
One of the problems with the iPhone camera is that the colors are often flat. I suppose color rendering ability is one of the areas in which designers have to compromise to cram a several megapixel sensor and optics into the space available in a cell phone. Phone cameras also are often used in less-than-ideal lighting situations. The question arises, then, what to do to compensate for poor rendering. Quite by accident, I discovered that TrueHDR may be one of the answers to that question.
I took the following two photos using TrueHDR's integrated picture-taking feature. One is exposed for the highlights and the other for the shadows. On their own, neither is remarkable (nor is the photo I took with the built-in Camera app).

The exposures are actually pretty similar — more similar than they appear here on the Web. I expected a wider spread than what we see. However, when I told the app to merge the two exposures to compress the dynamic range, I got a photo that is much more true to the scene:
The result is a bit too saturated, particularly in the blue range (probably a white balance issue in the source images), but the overall color is more accurate.
The app is straightforward and easy to use. It presents a screen upon launch which lets the user take pictures with the camera or use pictures from the iPhone photo library. If the user chooses to take pictures, a camera preview appears with instructions to tap on a bright area in the photo. Below is a screenshot of such a screen with the preview area dark to make it easy to read the instructions.
Once the user takes the first picture, similar instructions tell the user to tap on a dark area and take the second picture. The user then comes to a screen similar to this one:
The screenshot above is actually what the user sees when merging photos from the library. When taking pictures, the user continues to see the camera preview in the top section of the screen instead of the photo chooser as seen here. Once you have the two photos to be merged showing in the bottom section, press the Merge button to have TrueHDR align and merge the images.
There you have it! Simple, easy to use, and effective. There are a few so-called HDR apps in the app store which do nothing more than apply a saturation boost to a single photo. The only other app at the time of this writing that does true HDR is Pro HDR. I intend to give that a whirl soon since it is the same price as TrueHDR but looks like it gives the user more control over the results. I will post a brief writeup about the app once I have purchased and used it.
One of the problems with the iPhone camera is that the colors are often flat. I suppose color rendering ability is one of the areas in which designers have to compromise to cram a several megapixel sensor and optics into the space available in a cell phone. Phone cameras also are often used in less-than-ideal lighting situations. The question arises, then, what to do to compensate for poor rendering. Quite by accident, I discovered that TrueHDR may be one of the answers to that question.
I took the following two photos using TrueHDR's integrated picture-taking feature. One is exposed for the highlights and the other for the shadows. On their own, neither is remarkable (nor is the photo I took with the built-in Camera app).

The exposures are actually pretty similar — more similar than they appear here on the Web. I expected a wider spread than what we see. However, when I told the app to merge the two exposures to compress the dynamic range, I got a photo that is much more true to the scene:
The result is a bit too saturated, particularly in the blue range (probably a white balance issue in the source images), but the overall color is more accurate.
The app is straightforward and easy to use. It presents a screen upon launch which lets the user take pictures with the camera or use pictures from the iPhone photo library. If the user chooses to take pictures, a camera preview appears with instructions to tap on a bright area in the photo. Below is a screenshot of such a screen with the preview area dark to make it easy to read the instructions.
Once the user takes the first picture, similar instructions tell the user to tap on a dark area and take the second picture. The user then comes to a screen similar to this one:
The screenshot above is actually what the user sees when merging photos from the library. When taking pictures, the user continues to see the camera preview in the top section of the screen instead of the photo chooser as seen here. Once you have the two photos to be merged showing in the bottom section, press the Merge button to have TrueHDR align and merge the images.
There you have it! Simple, easy to use, and effective. There are a few so-called HDR apps in the app store which do nothing more than apply a saturation boost to a single photo. The only other app at the time of this writing that does true HDR is Pro HDR. I intend to give that a whirl soon since it is the same price as TrueHDR but looks like it gives the user more control over the results. I will post a brief writeup about the app once I have purchased and used it.
New Year's resolution
Fri, 01 January 2010
I didn't make a lot of pictures in 2009.
There just didn't seem to be time between
the photo club, working on the house,
making wedding plans, and all the other
things that were going on. I didn't realize
how busy the year was until I started
thinking about it for this post. As I look
ahead to 2010, I can't help thinking that
it will be less busy. I'm stepping down as
photo
club president, the wedding is in
March, and I hope to have the house
mostly finished by early this summer.
One thing I would like to do is get back to participating in the photo club field trips. Sure, a lot of them in the past have started before the crack of dawn in order to catch the good light (I'm NOT a morning person) but it has been worth the sacrifice. The trips present stimulating opportunities and challenges. Take the zoo trips for example. I love animals but I don't particularly enjoy wildlife photography (not that animals in a zoo are considered wildlife in the photographic world, but you get the idea). The trips present the challenge of finding interesting shots that don't necessarily involve animals. The zoo is a haystack and my challenge is to find a few needles. We had a Downtown Houston field trip a couple years ago which netted a nice shot of a fountain and one of a parking garage, among many others. My outings with the Houston Leica Fellowship have been enjoyable and productive as well, and my association with that group provided the opportunity to go on a 2005 photographic journey through China led by renowned photographer Dazhen Wu (吳大軫). That trip was truly a life-changing experience.
I would like to get back to doing more personal work and less work for hire. Sure, it's nice to make money, but personal work is, by its nature, more enjoyable. It can be stress-reducing and therapeutic. It also helps keep the creativity flowing.
I want to refine my skill as a digital printer so I can get what I see on my monitor to appear more faithfully on paper. I mentioned challenges above — printing can be very challenging too. Inkjet printing of black and white images is particularly difficult to do well. This might come as a surprise to some people but for me, printing black and white well is harder than color printing even considering all the color management issues that come with color printing.
I've spent 417 words talking about my resolution without directly saying what it is. In 2010, I resolve to make more photographs. I'm talking personal photos, work I do for my own enjoyment instead of for a cheque. I'm curious what other photographers are planning for the coming year so please leave a comment to tell us about your resolution.
One thing I would like to do is get back to participating in the photo club field trips. Sure, a lot of them in the past have started before the crack of dawn in order to catch the good light (I'm NOT a morning person) but it has been worth the sacrifice. The trips present stimulating opportunities and challenges. Take the zoo trips for example. I love animals but I don't particularly enjoy wildlife photography (not that animals in a zoo are considered wildlife in the photographic world, but you get the idea). The trips present the challenge of finding interesting shots that don't necessarily involve animals. The zoo is a haystack and my challenge is to find a few needles. We had a Downtown Houston field trip a couple years ago which netted a nice shot of a fountain and one of a parking garage, among many others. My outings with the Houston Leica Fellowship have been enjoyable and productive as well, and my association with that group provided the opportunity to go on a 2005 photographic journey through China led by renowned photographer Dazhen Wu (吳大軫). That trip was truly a life-changing experience.
I would like to get back to doing more personal work and less work for hire. Sure, it's nice to make money, but personal work is, by its nature, more enjoyable. It can be stress-reducing and therapeutic. It also helps keep the creativity flowing.
I want to refine my skill as a digital printer so I can get what I see on my monitor to appear more faithfully on paper. I mentioned challenges above — printing can be very challenging too. Inkjet printing of black and white images is particularly difficult to do well. This might come as a surprise to some people but for me, printing black and white well is harder than color printing even considering all the color management issues that come with color printing.
I've spent 417 words talking about my resolution without directly saying what it is. In 2010, I resolve to make more photographs. I'm talking personal photos, work I do for my own enjoyment instead of for a cheque. I'm curious what other photographers are planning for the coming year so please leave a comment to tell us about your resolution.
All I wanna do is zooma zoom-zoom-zoom...
Mon, 15 June 2009
(...and a boom-boom)
With the miniaturization of electromechanical components becoming so advanced, how long will it be before Apple gives the iPhone optical zoom? What would they call it, the iPhone 3G Z? Of course the intuitive way to control the feature would be the same multi-touch pinch maneuver that we’re already accustomed to using for zooming photos, maps, and web content in and out. Hey Apple, if you use my idea then all I want is an appropriate amount of Apple stock and a free replacement of my current iPhone with the one that incorporates these features, ok? Really. Call me.
You can watch the probably NSFW music video here if you are so inclined.
With the miniaturization of electromechanical components becoming so advanced, how long will it be before Apple gives the iPhone optical zoom? What would they call it, the iPhone 3G Z? Of course the intuitive way to control the feature would be the same multi-touch pinch maneuver that we’re already accustomed to using for zooming photos, maps, and web content in and out. Hey Apple, if you use my idea then all I want is an appropriate amount of Apple stock and a free replacement of my current iPhone with the one that incorporates these features, ok? Really. Call me.
You can watch the probably NSFW music video here if you are so inclined.
Professional development, part trois (a.k.a. "That Screen")
Thu, 26 July 2007
I really am enjoying the freedom to watch
the video podcasts to which I'm subscribed
anywhere, any time. Photoshop Killer
Tips is perfect for those
less-than-five-minute chunks of time
when you'd otherwise be bored out of
your mind. For slightly longer idle
periods, the video variety of the
Tips from the Top
Floor podcast will keep you
informed and entertained. For periods
longer still, such as having a quick,
informal meal by yourself, Photoshop User TV
and Photo Walkthrough
fit the bill nicely. If you're waiting
in the airport, one of the Radiant Vista Video
Tutorials might be a good choice.
If you are reading this blog then the chances are good that you already know about all the podcasts mentioned above. You are probably already subscribed to most (or all) of them. Maybe you've even been enjoying them on the road with a 5.5G iPod for quite a while. As someone who made the jump to iPhone from the 4G iPod which couldn't even display still pictures, I have not had the luxury until now of watching video while out and about. However, the iPhone has two key advantages over the 5.5G iPod that would have had me upgrade anyway: only having to carry one device, and that screen! Oh, and did I mention the screen? It's considerably larger than the iPod screen in both pixel dimensions and physical dimensions. Granted, an 8GB iPhone only holds one tenth the data that an 80GB iPod can hold, but that's a trade-off I'm willing to make to have video-watching capability always with me at the ready and to be able to view it on that screen.
If you are reading this blog then the chances are good that you already know about all the podcasts mentioned above. You are probably already subscribed to most (or all) of them. Maybe you've even been enjoying them on the road with a 5.5G iPod for quite a while. As someone who made the jump to iPhone from the 4G iPod which couldn't even display still pictures, I have not had the luxury until now of watching video while out and about. However, the iPhone has two key advantages over the 5.5G iPod that would have had me upgrade anyway: only having to carry one device, and that screen! Oh, and did I mention the screen? It's considerably larger than the iPod screen in both pixel dimensions and physical dimensions. Granted, an 8GB iPhone only holds one tenth the data that an 80GB iPod can hold, but that's a trade-off I'm willing to make to have video-watching capability always with me at the ready and to be able to view it on that screen.
Great for abstracts
Fri, 20 July 2007
Camera performance
Sun, 15 July 2007
As much as I like iPhone, I have to admit
that the camera isn't really too good.
Although by cameraphone standards, I
suppose it's not too bad, either. I won't
be shooting any magazine covers with it but
it should be sufficient for attaching
snapshots of prospective models to their
Contacts entries.

Slow "shutter" speed
Slow "shutter" speed
even with reasonable light

Marginal low-light performance
(poor contrast and lots of noise)
Getting good color in Photos
Sat, 07 July 2007
I've never really liked iPhoto.
Blasphemous, I know. I'm sure it works
quite well for family vacation photos and
other "happy snaps" but it seems a little
clunky and somewhat limited for serious
photographers. That's undoubtedly why Apple
produced Aperture. I don't
use Aperture because my humble laptop
doesn't meet the minimum hardware
requirements. It sings with iView, however.
Getting back to iPhoto... since I don't use it (or at least didn't until I started preparing for iPhone) I had forgotten that I turned off the "Copy files to iPhoto Library folder when adding to library" preference. In my iPhone preparations I was a dragging-and-dropping fiend, pulling in photos from some of my external drives as well as my local drive. Last night was the first time I synced without those drives mounted. When I saw iTunes' status bar say "Deleting photos..." I started to worry. Why was it deleting photos from iPhone?
During my troubleshooting, I discovered that the files iTunes had deleted were all TIFFs. I naturally assumed that was the problem and used Photoshop to create JPEG versions -- I also took that opportunity to size the photos to fit iPhone's screen dimensions and apply size-appropriate sharpening. I synced iPhone and what do you know? The photos were back. Only they looked washed-out compared to how they looked on the iPhone before. The colors were less saturated and contrast was lower, as if they didn't get converted from Adobe RGB to sRGB. Of course I realize that sRGB has a smaller gamut than Adobe RGB, but the images looked the same on my laptop screen after the color space conversion. After saving as JPEG and then opening the JPEGs in Photoshop again, they still looked almost identical to their Adobe RGB brethren with only very slightly less saturation. In iPhoto and on iPhone, however, they showed a marked difference. I tried saving the JPEGs with and without embedded profiles, but it didn't matter.
So the moral of the story is that if you have richly saturated photos that you want to display on your iPhone in all their glory, save them as single-layer TIFFs.
Getting back to iPhoto... since I don't use it (or at least didn't until I started preparing for iPhone) I had forgotten that I turned off the "Copy files to iPhoto Library folder when adding to library" preference. In my iPhone preparations I was a dragging-and-dropping fiend, pulling in photos from some of my external drives as well as my local drive. Last night was the first time I synced without those drives mounted. When I saw iTunes' status bar say "Deleting photos..." I started to worry. Why was it deleting photos from iPhone?
During my troubleshooting, I discovered that the files iTunes had deleted were all TIFFs. I naturally assumed that was the problem and used Photoshop to create JPEG versions -- I also took that opportunity to size the photos to fit iPhone's screen dimensions and apply size-appropriate sharpening. I synced iPhone and what do you know? The photos were back. Only they looked washed-out compared to how they looked on the iPhone before. The colors were less saturated and contrast was lower, as if they didn't get converted from Adobe RGB to sRGB. Of course I realize that sRGB has a smaller gamut than Adobe RGB, but the images looked the same on my laptop screen after the color space conversion. After saving as JPEG and then opening the JPEGs in Photoshop again, they still looked almost identical to their Adobe RGB brethren with only very slightly less saturation. In iPhoto and on iPhone, however, they showed a marked difference. I tried saving the JPEGs with and without embedded profiles, but it didn't matter.
So the moral of the story is that if you have richly saturated photos that you want to display on your iPhone in all their glory, save them as single-layer TIFFs.

