Archive for the 'photography' Category

14
Oct
10

The Greatest Home Run Ever: 50th Anniversary

Yesterday was the 50th anniversary of the Pittsburgh Pirates’ dramatic victory over the New York Yankees in game seven of the 1960 World Series.  For the last 25 years at least one person has listened to the radio broadcast in front of what remains of the outfield wall of Forbes Field.

Sign Commemorating Forbes Field

Given that this year is the 50th anniversary, there were quite a few more people there than usual.

People gathered at the wall

So many people were expected that the city closed off the street that runs by the wall in order to accommodate the festivities.

Street Closed

There were some interesting characters in the crowd.

Super 'stache

Arrr, matey!

There were plenty of reporters and cameramen.

Whoa, I definitely should not have had that burrito for lunch.

People brought along souvenirs and mementos…

Maz and the '60 Bucs

…and maybe a beer or two.

Yinz got an arn for me?

When 3:36 rolled around, it was time to celebrate.

Yes!!

High five!

It was a great event, an opportunity for those of us who weren’t there to experience the thrill of it, and a chance to share it with the next generation.

We had 'em all the way!

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21
Dec
09

Eye-Fi

I got my wife the Eye-Fi 4GB Share Video SD card this year for Christmas.  Yesterday, while we were snowed in, we exchanged a few gifts so she got to open it.  In a nutshell, this SD card has both 4GB of flash storage and a built-in wireless adapter that enables it to wirelessly transmit photos and videos to your computer over your wireless network.

While I thought this would be a great gift, I was a little concerned that it wouldn’t work on the university’s wireless network in our on-campus apartment.  Sure enough, when I tried to set it up yesterday I couldn’t get it to work.  Any time a new device tries to connect to the university’s wireless network the DHCP server assigns it a temporary local IP address and redirects it to a registration web page.  Unfortunately, the Eye-Fi isn’t really a network adapter so you can’t use it to browse the web.  Thus, you can’t visit the registration page in order to register it for use on the network.

After the automatic setup procedure didn’t work I jotted down the card’s MAC address (which is easy to determine using the included software) and emailed the IT people on campus to ask if they could manually add the card’s MAC address to the list of MAC addresses the DHCP server will supply with IP addresses.  They were very helpful and responded that they had added the card’s MAC address as I had asked.

So, now it appears that I’m all set. I spent some time this afternoon getting it set up and I’ve successfully uploaded 5 or 6 pictures and one video using the device. All in all, it’s pretty nice. Hopefully, using this card will simplify the process of getting pictures from the camera to the computer but only time will tell if the device lives up to its promise.

If the card I got my wife works out well, I’ll seriously consider buying the Eye-Fi Pro, which permits you to upload RAW files as well as JPGs and videos.  In addition, it enables you to set up an ad-hoc connection with your PC so you can bypass local wireless networks and upload pictures directly from your card to your computer.  This type of functionality typically costs much more than either the Eye-Fi Pro’s street price of $100 or its MSRP of $150.

13
Nov
09

Photographic firsts

I recently posted two images on my photo blog, both of which represent firsts for me.  Since the photoblog is kind of minimalist, I didn’t write much about them there, but I thought I should maybe add some info about them here.

The first was taken using a zone plate, which I got ages ago but never used.  I got it last year at my birthday in a kit like this, which includes a device for holding photographic pinholes, the pinhole itself, and an adapter to make it fit my camera.  I had taken a few photos using the pinhole but never the zone plate.  I like the effect.  There are a couple of downsides to using either the pinhole or the zone plate, however.

First, these have incredibly narrow apertures, which means that, in order to get a correctly exposed image, you need a very long exposure or very high ISO setting.  I kept the ISO reasonably low but I used my tripod to give me the stability I needed for a long exposure.  I used a 1.3 second exposure, which, for a shot taken in the middle of the day, is really long.  This zone plate has f/56 (not 5.6, 56!), which is pretty wide for this type of device.  The pinhole I have is something like f/130, so it would require a much longer exposure.

Second, whereas taking photographs with traditional lenses is pretty forgiving when it comes to junk on your sensor, pinhole and zone plate photography is extremely unforgiving.  I had to do a bunch of spot removal in Lightroom to get rid of a bunch of ugly splotches on the image.  The image below is a 1:1 crop from an image I took of the same scene with the pinhole.  There are at least 4 spots that are clearly visible, though they vary in severity.  I had never noticed these spots before in shots taken using my normal lenses.  I guess if I want to do any more photography using my pinhole or zone plate, it’s probably time to have my sensor cleaned again.

Spots on my CCD

 

The most recent picture is my first foray into high dynamic range (HDR) photography.  I’ve been interested in this for a while but never really pursued it.  The point of HDR images is to make details visible in both the highlights and shadows of an image. Generally, both the camera sensor and any typical viewing medium (like a monitor or even printed photos) don’t have enough dynamic range to either properly capture or properly display details in both an image’s shadows and highlights.  There is just too much difference in brightness between the darkest parts and the lightest parts in a scene for the camera to capture everything or for it to all be faithfully reproduced on a monitor or print.  So some kind of workaround is necessary.

Due to the limitations of the camera’s sensor, capturing the details in both the highlights and shadows requires multiple images to be taken at different settings, a technique called exposure bracketing.  In the simplest case, exposure bracketing involves taking the following 3 photos: one that’s significantly underexposed (to capture details in the highlights), one that’s properly exposed, and one that’s significantly overexposed (to capture details in the shadows).  These images are then imported into a program on a computer that merges them to produce a composite image that has a much higher dynamic range than can be captured with a single exposure.  Unfortunately, this image also has a much higher dynamic range than can be displayed on a monitor or on a print, so another step is necessary.  This step is called tone mapping.

Tone mapping takes a HDR image that can’t be displayed and maps its brightness values back to a range of values that can be displayed.  When an image is captured, the darkest darks and the brightest brights are “clipped”, which means they’re simply cut off – detail in those areas is lost.  Taking multiple pictures of the same scene using different exposure settings gets back the data that was clipped.  Tone-mapping could simply clip the data again, however that would throw away the detail we want to preserve.  Instead, tone-mapping compresses the dynamic range, so that the details are preserved in both the highlights and shadows.  Modern tone mapping algorithms are actually quite a bit more complicated than simply compressing the dynamic range.  Rather, they operate on the data both globally and locally to try to maximize the extent to which details are visible in the image while simultaneously compressing the dynamic range to something that can be viewed on a monitor or print.  This often results in a very striking, though sometimes unnatural-looking image.

Yesterday I was looking through my to do list and I found a reminder to buy some software for making HDR before I graduate so I can take advantage of their (60%!!) educational discount.  Having just sold our exercise bike, I had some cash on-hand so I decided to go ahead and buy the software while I thought about it.  I bought Photomatix from HDRSoft for about $40 rather than the usual $100.  I remembered that I was out a month or two ago and for some reason decided to take some shots using exposure bracketing, so I looked through my Lightroom catalog and found a few sets of exposure bracketed images.  I picked the set that I liked best, exported it to Photomatix, created the HDR image, re-imported to Lightroom, fiddled a bit with saturation and noise reduction, and then exported from Lightroom to PixelPost.  Done.

Having a tripod makes HDR photography easier, so I’m looking forward to using my new tripod along with my new HDR software to produce some good looking images in the future.  Stay tuned.

24
Oct
09

New Tripod

My birthday was a couple of weeks ago and in the weeks leading up to it, I spent some time trying to fill out my wish list on Amazon.  I would like to briefly plug their universal wish list button – you can add it to your browser’s bookmarks toolbar and then add anything you find on any website to your wish list.  That’s pretty handy.

Anyway, I have wanted a sturdy tripod for a while.  After a lot of looking, I decided that I wanted a ball head since I had grown tired of having to adjust two or three knobs in order to get my composition right.  I settled on the Manfrotto 322RC2. It seemed like it would allow incredibly fast composition changes and would be very comfortable to use.  So, that found its way onto my wish list.

By pooling together money I got for my birthday I was able to get the 322RC2 head with the Manfrotto 055XPROB tripod legs.  I haven’t had a lot of opportunities to use everything yet but so far I really like it.  The ball head is so nice.  It is super easy to change your composition, very quick, and it locks solidly into place.  The legs are big – if I extend the legs fully, the eyepiece of the camera is at eye level without raising the center column at all.  This is great because it maximizes stability and gives me some freedom to play around with shots that might require the camera to be above my eye level.

Continue reading ‘New Tripod’

18
Sep
09

Stitches

Our son had to get 2 stitches the other day when he cut his head after falling.  We’ve been thinking about how to prevent this type of thing from happening again, since he seems prone to falling and hitting his head.  People have suggested a helmet but that seems a little extreme – in particular because it protects parts of his head that aren’t in any danger. The only part of his head that’s in danger is his forehead.  With that in mind, I hit on an idea – a headband/sweatband.

Yesterday, my wife went out to Target and came home with a headband for him. You can see a picture of him wearing it by clicking the link below.

Continue reading ‘Stitches’

16
Sep
09

the apple doesn’t fall far from the tree

When I was little, I was always getting into mischief, which often led to some type of injury.  Just ask my mom – she had to take me to the emergency room many times.  I’m not totally sure how many times I had to get stitches while being restrained in a kid-sized straight-jacket, but it was more than once.

In any case, my son is now following in my footsteps.  He has been tripping, falling, and hitting his head on the ground for probably a month.  Today, though, he tripped and evidently hit his head on a small rock lying on the ground.  So, instead of a nice scrape like he’s gotten before, this time, he got a nice cut, which bled profusely down his face.  You can see a picture by following the link at the bottom of this post, but be warned – there is a lot of blood.  Also, here’s my wife’s description of today’s action.

Continue reading ‘the apple doesn’t fall far from the tree’

11
Sep
09

New header image

The observant among you (who also follow my photoblog) may have noticed that my new header image is the bottom portion of this image.  If you did, congratulations.  If not, consider this post a plug for my photoblog.




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