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Images from a visit to Boston’s Museum of Fine Arts:





Digital SLR Camera Lessons
I am offering one-on-one, individual instruction (or small group workshops) in all aspects of digital photography in the Boston and Cambridge, MA area. I will create a unique lesson with you that can include topics such as choosing a new digital SLR or advanced compact camera and related equipment, learning how to use the various settings and features of your digital camera, photographic composition and taking stronger images, processing and editing your images in Photoshop, and preparing for photographing while traveling. The lesson plan is up to you and is customized to your interests, needs, level of experience, and specific equipment. Subjects will be explained, demonstrated, and practiced in ways you will understand, remember, and use.
Please view the Lessons page here, or under Lessons in the blog menu above, to learn more details.

Central Square – Cambridge, MA – “Crosswinds” mural by Daniel Galvez
Learn to use your camera with confidence, get the most out of your digital SLR photography equipment, and learn to take better images. Get in touch with me at doug (at) dojoklo (dot) com or at 347-272-Seven Thousand.
I continue to get a large number of visits from people who are comparing the current line of Canon digital SLR cameras – the 5D Mk. II vs. 7D vs. 50D vs. 550D / T2i. I go into detail about comparing the features of these cameras in this post, including the 60D and T3i, so that is probably the post you want to read first. However, it is a long, in-depth post. If you would like to read a summary of how to make this decision and find out which camera is right for you, here it is (however, I still encourage you to read that in-depth post which is a bit more educational than this post).
Some Canon 60D info now added!
Before I start I want to mention:
I have written eBook tutorials for the Canon 60D Canon T3i, and for the Canon T2i, which cover ALL the Menu settings and Custom Function settings, with recommended settings, plus in-depth descriptions of how and and why to use the cameras’ settings and features in everyday use – Your World 60D, Canon T3i Experience, and T2i Experience. Learn more about the eBooks by clicking on their titles.

Longfellow House – Cambridge, MA
-New to digital SLR photography and want a really nice camera for casual home and travel use? Not really sure what all those buttons and symbols are and not really interested in knowing? Get a 550D/ T2i or a Rebel XSi.
-New to digital SLR photography and want to take really great, high quality photos, but don’t ever really plan to totally get into it? Don’t really want to spend months reading about f-stops and metering modes? Plan to use Auto or Program mode most of the time? Fall asleep 3 minutes into reading the manual? Get a 550D/ T2i or a Rebel XSi.
-New to digital SLR photography and want to learn the basics of exposure: aperture, shutter speed, and ISO? Want to learn to take the camera off Auto or Program mode, and experiment with partial or spot metering and manually selected focus points? Eager to read and understand the often confusing explanations of the manual? Get a 550D/ T2i, or a 60D.
-New to digital SLR photography and want to learn everything noted above plus want to take pictures of fast moving action: kids at play, sports, dance? Consider a 60D because it can shoot 5.3 frames per second vs. 3.7 fps of the 550D. This doesn’t mean you can’t focus on and capture fast moving action with the 550D, but it means with the 60D you can fire off a faster rapid series of shots, and thus hope to capture the exact right moment.
-New to digital SLR photography but super ambitious and know you are going to be committed and dedicated enough to learn about exposure compensation and back-button focusing? Ready for Av mode now, and plan to really take your photography to the next level over the next year or two? Already read the manual online? Want to consider the possibility of professional photography in the future? Get a 60D or get a 7D if you are super-serious and if you can afford it.
-Experienced with digital SLR photography and have outgrown the limited speed and menu/ custom options of the entry level cameras? Annoyed with digital SLR users you see on the street whose cameras are nicer than yours but are left on Auto or P mode? Want to take it to the next level and maybe test the waters of professional photography? Get the 60D or get a 7D if you can afford it. Consider a 5D Mk II if you are really, really serious.
-Experienced with digital SLR photography and plan to be a top notch amateur/ semi-pro or work towards being a pro? Carry your camera everywhere and want a sturdy tool that serves you and the way you work? Already have been paid to shoot some photos, portraits, or events? Have stopped trying to read the model number of other people’s cameras because you know your photos are better than theirs even if they have a nicer camera? Get a 7D, or a 5D Mk II if you can afford it, or wait for the 5D Mk III.
-Highly experienced with digital SLR photography and are dedicating yourself to being a part-time or full time pro? Already know and understand 99.6% of what you read in this other post? Just looking for reassurance that spending $2,500 is the right decision? Get a 5D Mk II, wait for the 5D Mk III, or get a 7D if you really can’t afford the 5D yet.

Cambridge City Hall – Cambridge, MA
You may have been convinced by forums, reviews, or online comments to question and compare image quality, auto-focus speed, high ISO performance and noise, dynamic range, etc., but those factors are all nearly completely irrelevant. All of these cameras have more than enough quality in each of those areas. Your choice should instead be based on your experience level and expected needs as a photographer, and on which camera best serves the way you work. Remember, you don’t need a top of the line camera to take professional quality photos. Instead you need mastery of the camera you have, combined with good knowledge of composition and lighting. I encourage you to have a look at some Flickr users’ photos taken with an “old,” 8MP Rebel XT to confirm this. When you are done selecting a digital SLR body, you canread some of my other posts to learn more about the Best Lenses for Travel Photography or Why You Shouldn’t Buy the Kit Lens.
Canon 5D vs. 550D / T2i – I get an unusually high number of hits from people searching for a comparison of the 5D Mk II vs. 550D / T2i. As you can see above, there isn’t a scenario where those two cameras are together as options, as they are on opposite ends of the spectrum. It is a strange comparison between an entry level dSLR and a full frame professional dSLR that, quite frankly, confuses me. If the 5D fits your expanding needs as a photographer, you would already pretty much know that you needed a 5D after your extensive time using a Rebel or a 20D, 40D, etc. Otherwise, getting a 5D means most likely you’d be investing in far more camera than you will actually need or use. Read more about why I say that here and in the Other Important Custom Functions section here (this post is about the 7D, but it will give you a feel for how a 5D / 7D differs from a 550D in terms of features that you may need but probably don’t).
AF Microadjustment 550D / T2i, 60D - A lot of people also search for AF Micro-adjustment or focus calibration for the Canon 550D / T2i for back focus or front focus issues. Due to quality control issues, acceptable tolerances, or more rarely but not unheard of bad cameras, your camera and/or lens may focus a few notches in front of or behind the subject you focused on. If your camera happens to be 2 notches on the plus side and your lens 2 notches on the minus side, well, you are going to have some issues. While the AF Microadjustment feature is not built into the menus of the Canon 550D or new Canon 60D, here is how you micro adjust for front or back focus: send the camera and/ or lens to Canon while it is under warranty, with instructions to calibrate them. You have to pay for one way shipping and insurance (+/- $30 for one item depending on weight and coverage). Ask them to include a detailed report of what the issue was and what service they actually performed (otherwise they just repeat what you wrote and say “lens was front focusing – electrical adjustment of AF mechanism” and you don’t know if it was the camera, the lens, or your mind that was off). Then send a letter to Canon asking them why a brand new expensive Canon camera paired with a brand new expensive Canon lens that you just bought does not focus properly, and why you have to pay $30 to send it immediately back to them to fix it. This process also applies to the AF Microadjustment of the 7D, 5D, and 50D and soon the 60D. It is best to first determine if the camera or the lens is the culprit, by testing the lens on another body or the body with another lens, but it may well be a combination of both since each lens and camera is uniquely faulty. See this great post, “This Lens is Soft and Other Myths” on LensRentals.com for more info on this.
If you are pretty new to digital SLR photography and you decided on the 7D, check out this really great book I recently came across while browsing the photo section at a bookstore: Canon 7D: From Snapshots to Great Shots by Nicole Young. I think you’ll learn more from it than most other how-to photo books and expanded manual type books. Even if you have another Canon and not a 7D, you’ll still find it helpful for learning how to really use a digital SLR to take better photos. She is currently working on a version of the book for the 60D, Canon 60D: From Snapshots to Great Shots.

And I, myself, have written eBook user guides for the Canon 60D and for the Canon Rebel T2i / EOS 550D. You can learn all about them here: Your World 60D, plus the mini-guide to the 60D Menus and Custom Functions (excerpted from the full version of Your World 60D), and T2i Experience.

Need a lens to go with your new camera? Read about choosing a lens other than the kit lens in this post Why You Shouldn’t Buy the Kit Lens, and learn about the Best Lenses for Travel Photography here.
Please leave a comment, ask a question. Let me know what has been helpful, and what you’d like to read more about.
If you plan to purchase any of this equipment or books, I encourage you to do so through the site I’ve set up with Amazon, Doug’s Picturing Change Digital Photography Equipment and Books or through this direct link to Amazon.com. Purchasing through any of these links to Amazon.com, or the ones below, will help support my blog and my work. Thanks! And for those of you across the pond, click here for my referral link to Amazon UK. If you are in another country, click on one of my Amazon links, scroll to the bottom of the page, and click on your country for your local Amazon.
See the T2i on Amazon.
See the 60D on Amazon.
See the 7D on Amazon.
See the Canon 5D MkII on Amazon.





I’d like to welcome the new readers that are finding me after reading my interview with Heber Vega in the “10Q – Interviews with Humanitarian Photographers” section of his blog. Please have a look around, including the posts in my Humanitarian Photography category. Some of them I referred to in the interview, including my post on self-assignments entitled “How to Start Out as a Humanitarian Photographer.“ Other posts include information on photo equipment for working in the field, lenses for travel and humanitarian work, ethics and images, and humanitarian related books. My most popular post seems to be a comparison of the various current Canon dSLRs, but of course, we’re not all caught up with gear, right?!
I responded to a comment on one of my posts, and my response ended up being the size of a blog post, so I’m just going to turn it into one! Please note that the title of this post should actually, technically be “Fixed Maximum Aperture vs. Variable Maximum Aperture,” as I will explain in a second.
If you are getting into dSLR cameras and lenses, you may have noticed that some lenses have a fixed maximum aperture, while others have a variable maximum aperture. This is spelled out in the name of the lens. For example, the Canon EF-S 17-55mm f/2.8 IS USM lens has a fixed maximum aperture of f/2.8 at all focal lengths, while the Canon EF 28-135mm f/3.5-5.6 IS USM has a variable maximum aperture which ranges from f/3.5 to f/5.6, depending on which focal length you are using. (the EF vs. EF-S means that EF lenses can be used on any Canon dSLR, while EF-S lenses are designed for, and can only be used on Canon dSLRs with 1.6x cropped sensors, including all Rebels, 50D, 60D, 7D, T2i/550D, but not the full frame 5D. IS means image stabilization. USM means ultrasonic motor, and means the lens has a high quality, rapid, and quiet motor for auto focusing.) The term fixed aperture usually does not mean that the lens only has one aperture setting you can use, but rather that is a common way of saying it has a fixed maximum aperture. So you can change the aperture of a “fixed aperture” lens and set it anywhere from its maximum aperture, possibly f/2.8, to its minimum aperture, perhaps f/32.

Barbes, Brooklyn, NY
With variable aperture lenses, the largest, maximum aperture you can choose when you zoom to the telephoto end will not be as wide open as the largest aperture you can choose at the wide angle end. For example with the 28-135mm f/3.5-5.6, with the lens set at the focal length of 28mm (the wide end), you can use the f/3.5 aperture setting. But with the lens zoomed to 135mm, the widest aperture you can use is f/5.6. This will slightly affect the amount of background blurring – or foreground blurring in the image above, and will decrease the amount of light entering the lens. Wider, larger apertures like f/2.8 or f/3.5 blur the background the most, which helps to create dramatic images. The reason not all lenses have fixed apertures is that they require more sophisticated internal parts and mechanisms, such as more lens elements, which thus makes them very expensive (and heavy), so variable aperture is a compromise in order to offer more reasonably priced lenses.

Barbes, Brooklyn, NY
Also, the wider apertures (f/2.8, f/4) are best for low light situations because they allow more light to enter the camera and thus allow you to select a fast shutter speed that won’t blur the image while hand-holding the camera. If you are typically working outside, this shouldn’t be too much of a concern, but if you work indoors or in low light, lenses with wide apertures like f/2.8 or f/1.4 are desirable.
Now, why is f/2.8 called a large aperture and f/22 a small aperture? 2.8 seems like a smaller number than 22, right? No, f/2.8 and f/22 are fractions. So if f were to equal 1, a slice of pie that is 1/2.8 of the pie is a bigger piece that a slice that is 1/22 of the pie, right?! So f/2.8 is a large aperture, which means a large opening, which lets in lots of light all at once, but which then causes objects not in the plane of focus, such as the background, to be blurry. f/22 is a small aperture, a small opening which lets in just a little light. But everything from near to far is in focus, like when you squint to see a street sign clearer! (The letter f in the fraction stands for the focal length of the lens.)
Please leave a comment, ask a question. Let me know what has been helpful, and what you’d like to read more about.
For additional posts about lenses see Best Lenses for Travel and Humanitarian Photography and Why You Shouldn’t Buy the Kit Lens.
If you plan to purchase any equipment, I encourage you to do so through the site I’ve set up with Amazon, Doug’s Picturing Change Digital Photography Equipment and Books. Or go directly to Amazon using this link to the Canon Lenses. Purchasing through my site or through that link will help support my work!
The Redcoats skirmish with the Colonial militia on Boston Common, as part of Boston Harborfest 2010







Two years ago, in 2008, I ventured to the annual rebuilding of the last remaining traditional Inca rope bridge, the Keshwa Chaca, which spans the Apurimac River near Huinchiri, Peru. My mission was to photograph the locals as they spun q’olla grass into rope, constructed the bridge, and celebrated the completion with a festival of traditional dance and music.
Previous posts describe my journey to the bridge site and show some of my photos from the weekend. Many of my photos are also posted on my website in the Inca Bridge gallery as well as in the dance gallery. One of my very favorite photos of the weekend was of this bridge-builder:

Keshwa Chaca 2008 – Huinchiri, Peru
As I was taking images of the bridge construction, this man quietly asked me to take his photo. A crowd of fellow bridge-builders quickly gathered to see it, and when I realized I had taken it in the black and white setting, I asked to do another in color. But it was too late. “Oh, es blanco y negro,” I said disappointedly, “¿un otra en color?” I asked. “¡Un otra desnudo!” an onlooker called out – “Another one in the nude!” The men erupted in laughter, the moment was gone, and I wasn’t able to take another. Luckily this one came out well, and ever since then it has been my goal to get a copy of the photograph to this man. Many people in developing countries have few, if any, photos of themselves or their family. I was sure he and his family would appreciate such a nice photo of this man standing modestly but proudly in front of the bridge he is helping to construct.
This year at bridge building time my friend Mitch Teplitsky (director of the documentary film Soy Andina) was visiting Cusco. He got in touch with me to find out more about the event and how to get there. When I learned he and his wife Doris had decided to go the following day, I begged him to find a way to print the photo and deliver it to the man. “It shouldn’t be hard,” I said, “just find a photo place on Avenida el Sol to print it out, and when you get there, just ask around, they will know him!” At least I hoped it would all be that easy. I’m not sure how they did it, but Mitch and Doris managed to print the photo, find their way to Huinchiri, and locate the man!

Keshwa Chaca 2010 – Bridge-builder and Mitch Teplitsky, photo by Doris Loayza




