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Multiple Exposure at BarCampCHS 6

I’ve led a photographically themed session at the annual BarCamp “unconference” in Charleston since 2010, with sessions on post-processing, lighting, retouching, and iPhonography. This year I tried to tap into the technical aspects of creative photography that have existed since the film days – Multiple exposures. We explored two different techniques, one involving a long exposure with multiple speedlights, and the other using the in-camera multiple exposure feature.

The first demonstration involved off-camera lighting. I used two speedlights and radio triggers to get this effect. I use Cactus v5 radio triggers, which allow me to assign a separate channel to each flash as well as fire them both at the same time. I set the flash on camera left to channel 3 and the one on camera right to channel 2. I set the camera to bulb mode, shut off all of the lights, and shot at ISO 100 and f/9 from a tripod. Rachel is the model, and her brother controlled the radio channels. As I held the shutter open, I had her do each pose and had her brother switch to the appropriate channel and fire the flash. This was the result:

That’s not a Photoshopped image. It’s all one exposure as far as the shutter actuations are concerned. The multiple exposures come from the separate speedlight actuations. Pretty cool, huh?

The next technique is a function of most DSLRs – a feature called “Multiple Exposure”. I learned something new about this feature on my Nikon – It’s not available when you’re shooting tethered! Oh well, after a long minute of trying to figure out why I couldn’t get it to work, I unplugged my camera from the presentation computer and got started. The way I set my camera up this time was to set the Multiple Exposure setting to 2 images in a series and then disable the auto-gain. For the effect of constraining the 2nd exposure within the 1st exposure’s silhouette, I wanted the background to be blown out (which is why you want to disable the auto-gain). This technique doesn’t require any special lighting, but since we were in a classroom, I used my speedlights to blow out a white wall behind my subjects.

This is John, who certainly had the best beard in the whole conference (probably in all of the Charleston peninsula for that matter). Another attendee had this vibrant purple paisley laptop bag with her that I used for the second exposure. Together they made quite the juxtaposition:

We had time for one more example, so using the same technique, I had this idea that came from something I saw that day at the College of Charleston campus. All over the walkways there were messages about speaking out about rape. There were hashtag messages such as #nomeansno and #itsnotyourfault written in chalk everywhere.

I asked my daughter Mackenzie to pose with a very sad and angry expression, and then I got a few people to stick their hands out for the second exposure. The idea of the shot was to see where you can take the technique creatively. In trying to make a visual interpretation of these messages we all saw that day, this was the result. I didn’t let on that that was what I was going for while we were setting this up because we were having fun during the session, so I hope that anyone who was there didn’t misinterpret my light-hearted presentation as making light of the seriousness of sexual assault in all of its forms.

Finally, I once again had the pleasure of shooting the group photo for the conference. Here’s most of the attendees and volunteers who make BarCampCHS happen every year:

And here’s a photo of me taking that photo, courtesy of Andy Paras form the Post & Courier:

BarCampCHS 4

This past weekend marked the 4th BarCamp in Charleston, SC. What is BarCamp? It can be described simply as an attendee-driven conference. The attendees pitch, vote on, and present the content of the day. It’s a lot of fun and this was my 3rd year doing it.

Once again, I presented a class that was photography related. This time I tackled my portrait workflow in Photoshop. I had two examples prepared to demonstrate the techniques I currently use when editing photos. The first one was a headshot of one of the pediatricians at Sweetgrass Pediatrics. I showed a basic RAW conversion in Camera RAW, and then opened the photo in Photoshop to demonstrate techniques like blemish removal, teeth whitening, how to optimize the eyes, skin softening, and dodging & burning. I finished with my selective sharpening technique. This is the final retouched image:

Due to the nature of BarCamp, my class got scheduled in the very first time slot of the day, which is cool by me (who doesn’t want to get their session over right away so they can enjoy the rest of the day??). Unfortunately, the day started quite late due to the fact that almost twice as many people showed up this year compared to last year. I only made it halfway through my session before we had to move outside to get the group photo made. I promised the class that I would post the second half of my session as a screencast here on my website, so you’re all in for something a little different.

Before I get to that, I wanted to talk about the group photo. As I was packing up my gear in the classroom, my daughter came rushing in and said “Come on, Dad, everyone’s waiting to get the photo taken!” I grabbed my camera and ran to the balcony to see everyone all grouped together on the ground level. I looked down at the crowd and thought “Oh, crap”. Mid-day, cloudless skies. Sharp shadows from the building, and worse, the trees. Bright yellow warm light dappling big swatches of faces, and cool blue shadowy light on the rest. All inconsistent, and no time to get hundreds of attendees to relocate! Besides, where could I possibly relocate them to anyway? Well, I switched my camera’s bracketing feature on and organized the crowd to fit in the frame and fired away.

This photo is the end result of a lot of finessing in Lightroom, Photoshop, and Color Effex Pro. I’ll save you from all of the gory details, but the dynamic range of my camera truly helped me save this photograph. I was able to use a highly underexposed photo (that still had blown highlights anyway) and create a useable image. HDR didn’t fly because there were too many moving parts. Doesn’t matter – people seem to like the shot regardless of the pixel gymnastics it took to get everyone somewhat evenly exposed.

OK, so here’s the screencast I ~~warned~~ told you about – Hope you enjoy it:

And here’s the final image that I retouched in this video:

Walking With The D800

21st Century Photography Group Photo Walk

Warning: Nerdy Photographer Talk Below

After Nikon announced the D800, I started watching for the D700 prices to fall enough to where I felt justified in purchasing a previous generation body. But the day after I rented a D800 from CharlestonAVGear for a wedding I found myself placing an order for Nikon’s newest (and IMO finest) camera.

Then I started reading the various photography forums and panic started to creep in because it appeared that I might not get this camera until August!

I had a delivery estimate from Amazon, and then early last week the estimate vanished and was replaced with “unknown”. Gahh! I started following this thread on NikonRumors because some posters were letting people know when various retailers had stock available. I got lucky on Tuesday morning because someone posted that NikonUSA.com had them listed in stock. I quickly ordered one and moments after I placed my order they were listed as out of stock again. Regardless, on Wednesday morning I had the new camera in hand! The funny thing was that I got a notice from another fine camera retailer, Robertscamera.com, later in the day on Wednesday that they had some in stock, so I shared that info on the Nikonrumors forum that helped me out and some other shooters were able to get D800’s from them. Paying back on the forum that helped you is a good recipe for internet karma. And as of now it seems that a lot of people are getting the camera’s they’ve had on back-order for months, so I am assuming that the supply is reaching the level of demand to some degree.

So, I was itching to go out and use my new tool, since it’s a very different animal than my previous body. The local photography group, the 21st Century Photography Group, was hosting a photo-walk at the College of Charleston on Sunday. A perfect opportunity!

I brought my son Kegan along, who was shooing with my P7000.

Unfortunately it was quite hot and he was not feeling the whole walking part of the photo-walk. He did get a box of crackers to snack on, but even that couldn’t sooth the savage Kegan 😉

I’ve been shooting with a cropped sensor for so long now that switching to a new full-frame sensor is introducing a whole new way for me to approach the things I am used to. The focal lengths are now properly represented, so my 50mm lens is a true 50mm instead of the 80mm equivalent on a cropped sensor camera. This means I’ve got to get closer! That has the effect of decreasing the available depth of field, so focusing properly is crucial. The 36 mega-pixel sensor in the D800 also brings another challenge: The resolution is so high that it is not forgiving at all if you have bad technique hand-holding the camera. You can see the effects of camera shake when you view things at the full resolution. Luckily, most people aren’t viewing your images like that, but I think it’s a valuable thing because it challenges you to improve your technique!

It’s not easy changing the class of bodies either. My D90 is laid out very differently than the D800, so I’m constantly hitting the wrong buttons because they’re not where I’m used to finding them. That’s OK, it’s only a matter of going out and shooting as much as possible that will quickly remedy it. I did have some moments of panic when shooting a wedding with it, but I’ll talk more about that in a future post.

I can’t wait to shoot some studio stuff with this camera. The resolution is so amazing. I’ll be sure to write another post soon about that experience. For now, I’m buried with post-processing from previous shoots. The good news is that my computer seems to be dealing with the giant NEF RAW files from the D800 quite well, so one of my biggest fears has been put to bed. It does take a tremendous amount of time uploading the full resolution jpegs to Flickr though, but that’s something I can happily deal with 😉

On a side note, I checked out one of Apple’s new Retina Display MacBook Pro’s this afternoon. Holy Balls. My D800 photos look even better on that thing than I could have imagined. It looks like I’m going to need to book a bunch of these real soon!

BarCampCHS Session Wrap-Up

Group Photo of the BarCampCHS attendees

Yesterday was the 3rd annual BarCampCHS event, and like last year it was held over at the College of Charleston campus in downtown Charleston, SC. As mentioned in an earlier post, I held a session on Off-Camera Flash. Before I talk about the highlights of my presentation, I wanted to share a bit of the BarCamp experience.

30 Seconds To Pitch

After you register and get your bag o’ swag, the attendees gather in an auditorium and the people who plan on holding sessions get 30 seconds each to pitch their idea. As you tell everyone what you plan to do, a counter is counting down behind you (a few people did have to get the mic taken away from them mid-thought). In reality, you only got about 25 seconds to pitch since people started counting down the final 5 seconds. I found it quite entertaining, especially when some mouthy participant trying to hawk a couponing network-marketing scheme went over his 30 seconds and tried to continue without the mic. He was followed by @CaananTully who pitched a session on saving money at the supermarket without using coupons. The crowd applauded loudly. Afterward, the attendees lined up to vote on which sessions they’d like to attend.

With that, sessions began about a myriad of topics, although it was highly concentrated on computer programming. Some of the more popular sessions focused on geek culture, including a session about modifying old Nintendo Entertainment System games such as Super Mario Brothers.

Eugene Mah Flaunts His Bathrobe Style

Eugene Mah took a lot of great photos of the days events, and they can be seen here. There is a BarCampCHS Flickr Group to check out, as well as my full set of photos. Twitterer @Pataford has a Ustream channel with some video he took. If you have some content I missed, please let me know in the comments! Now, on to my creative session:

Off-Camera Flash 101 Session

Slides from my BarCampCHS presentation

I started off the presentation by a short introduction and recap of my session from last year on photo editing. I showed some of the photos we made and edited and started talking about the creative use of lighting in the shots. This led to a brief discussion on why you would want to use off-camera flash. I also touched a little on why you would ever use your on-camera flash, and showed an example of fill flash outdoors during a bright and sunny day.

Next, we talked about shooting in manual mode – both on the camera and on the flash. We talked about the benefits of TTL as well as its shortcomings and why it’s important to know how to use manual flash, especially when working with light modifiers. I explained how when dealing with off-camera flash, you can control your ambient light with your shutter speed and your flash power with your aperture settings. Someone asked about ISO settings, and I explained that you want to shoot in your camera’s native ISO when dealing with lighting to produce consistent and clean images.

The next part of the session dealt with the different methods of getting your flash off of your camera. The first method was using bounce flash. I explained that even though the flash is still technically on the camera, the light source is now whatever you are bouncing the flash off of, which is indeed off of the camera. @TheKingOfGames volunteered to be our model as we took some sample shots. We started with a shot with the flash on the camera to reference the difference.

Straight Flash on the Camera

As you can see, the shot is not all that flattering. Someone in the class said “It looks like something you might see on Facebook”. I then showed the differences when bouncing the flash off of the ceiling or wall. In the following shot, I used the projector screen to bounce off of, which was really bright and reflective:

Bounce Flash Off A Wall

You can immediately see the difference in the quality of light. I talked about the softness and direction of the light, which made for a more defined image whereas the straight flash shot was very flat.

Next we talked about using a wire to move the flash off of the camera. The benefit being reliability while being able to cheaply transmit TTL information, with the downside being limitations of the cable’s length. We briefly talked about the different standards in cables, including PC Cables, 1/8″ Audio-Style Cables, and TTL Cables. I had a TTL cable that I use with my bracket, so we took a test shot using the bare flash:

Bare Flash Using a TTL Wire

Since I only had a short cable, I was able to demonstrate the limitation of the distance I could place the flash away from the camera (about arm’s length).

We then talked about wireless flash. I covered the three main methods of shooting wireless: Optical, Infrared, & Radio. We discussed the benefits and issues with each method. Optical is cheap but unreliable. Infrared can transmit TTL information, can be cheap depending on the hardware you already own (it also can be quite expensive if your camera doesn’t support it), and how you can control the flash settings from the camera. It’s also limited to line of sight and is very unreliable outdoors. I took a test shot using the pop-up flash on my D90 in commander mode to fire an SB-600 on a mini tripod to camera right:

IR Wireless Flash Test Shot Using an OmniBounce Diffuser

I spent the most time on radio triggers. I talked about the Pocket Wizards and Chinese knock-offs. I explained that you can buy about six Cactus v5 triggers for the price of one Pocket Wizard Plus II and according to many reviews and tests, the Cactus v5 is more reliable! I also touched on the newer Pocket Wizards and Radio Poppers that are able to transmit TTL information. I explained that for the cost of that convenience, you could be investing in some great lights! Sure it would be nice to justify having the top of the line triggers, but there’s no shame in buying a set of reliable knock-offs when you can achieve the same end-result for a fraction of the cost.

Photo by Daniel Vice @sharpstick on Twitter

I started doing some shots using an umbrella. I demonstrated how to control the flash power by changing the aperture, and then mixing ambient light with flash by adjusting the shutter speed. I showed how to match the ambient florescent lighting and flash lighting by gelling the flash with a green gel and setting the white balance in the camera to florescent.

Umbrella Look

I also talked about sync speed. I demonstrated what happens when you shoot faster than your sync speed:

Shooting Faster Than Your Sync Speed

I then changed the umbrella and set it up as a shoot-through umbrella and showed how it created a different look.

Photo by Daniel Vice @sharpstick on Twitter

I took a few shots as I moved the light around to get a softer look.

Shoot-Through Umbrella Look

I also altered the model’s position a bit and added another flash onto my camera at its lowest power setting to try and achieve a small catchlight in his eyes. This was our final result, which will hopefully make for a nicer Facebook profile pic than what we started with 😉

Final Shot

We did some Q&A, and I shared some resources for learning about camera lighting. Here’s my list:

joemcnally.com – Joe McNally
strobist.com – David Hobby
zackarias.com – Zack Arias
kelbytraining.com -Scott Kelby

I also wanted to add a pair of new eBooks by Piet Van den Eynde on Craft & Vision. You can pick up each of the two eBooks for $5 each, or buy them both at the same time for only $8. He’s done an excellent and thorough job in the first book of introducing the reader to off-camera flash, and takes you much further in the second one. I think it’s definitely worth more than $8!

Tech Specs For My Presentation

Gear:
Camera: Nikon D90
Lens: Tamron 17-50 f/2.8 VC
Flash: Nikon SB-600
Light Stand: Manfrotto 5001B
Umbrella: Photek Softliter II
Wireless Triggers: Cactus v5
Gels: Cokin Photogels
Mini Tripod: Jobi GorillaPod

I ran the presentation on an iPad hooked up through a projector using Keynote for the slides and Photosnitch for the live demo. I used an EyeFi wireless SD card to transmit the photos to the iPad sans cables.