{"id":7914,"date":"2012-01-17T10:41:34","date_gmt":"2012-01-17T14:41:34","guid":{"rendered":"http:\/\/www.birdsasart-blog.com\/?p=7914"},"modified":"2012-02-20T08:06:35","modified_gmt":"2012-02-20T12:06:35","slug":"just-duckie-two-depth-of-field-questions-additional-lessons","status":"publish","type":"post","link":"https:\/\/www.birdsasart-blog.com\/baa\/2012\/01\/17\/just-duckie-two-depth-of-field-questions-additional-lessons\/","title":{"rendered":"Just Duckie: Two Depth-of-field Questions & Additional Lessons"},"content":{"rendered":"\n\n\n
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Harlequin Ducks, two pair on the rocks. Barnegat Jetty, Barnegat Light, NJ. DEC 12, 2011. With the the tripod-mounted Canon 800mm f\/5.6L IS lens<\/a> and the EOS-1D Mark IV<\/a>. ISO 400. Evaluative metering +1 stop (was still well underexposed): 1\/25 sec. at f\/18 in Av mode. 1\/25 sec. is not a typo. <\/p>\n

Central Sensor Rear Focus\/AI Servo AF and recompose. Click here<\/a> if you missed the Rear Focus Tutorial. Lens\/TC\/camera body Micro-adjustment<\/a>: +2. For a greater appreciation of the image, click on the photo. Then click on the enlarged version to close it. <\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Just Duckie: Two Depth-of-field Questions<\/h3>\n

In the two images here you see two very different approaches. For the image above, I moved way back–sun angle was irrelevant as the birds were in the shade. For the image below I got low and used a few other professional tricks to get close enough to the group for a head portrait; this species can be quite skittish.<\/p>\n

I write and teach: work wide open unless you can verbalize a reason for stopping down. <\/p>\n

For the group image above, why f\/18? (Wide open would have been f\/5.6.) <\/p>\n

For the head portrait below, why f\/11? (Wide open with the TC would have been f\/8.)<\/p>\n\n\n\n
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Harlequin Duck, drake head portrait. Barnegat Jetty, Barnegat Light, NJ. DEC 12, 2011. With the the tripod-mounted Canon 800mm f\/5.6L IS lens<\/a>, the 1.4X III TC<\/a>, and the EOS-1D Mark IV<\/a>. ISO 500. Evaluative metering -1 stop: 1\/60 sec. at f\/11 in Manual mode. <\/p>\n

Central Sensor (by necessity) Rear Focus\/AI Servo AF active at the moment of exposure. Click here<\/a> if you missed the Rear Focus Tutorial. Lens\/TC\/camera body Micro-adjustment<\/a>: +4. For a greater appreciation of the image, click on the photo. Then click on the enlarged version to close it.<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Just Duckie: Additional Lessons<\/h3>\n

In view of the fact that I have long believed that the best way to teach is to ask, I continue: <\/p>\n

For the group image why did I hold the shutter button down? <\/p>\n

For the head portrait, why did I hold the shutter button down? Why was I actively focusing at the moment of exposure? <\/p>\n

Why did I need to add light for the group image but subtract light for the head portrait? (The subjects and the backgrounds are the same….) <\/p>\n

Barnegat Jetty Site Guide<\/h3>\n

Whenever I visit the Barnegat Jetty (which is every time that I come to Long Island in the winter), I follow Denise Ippolito’s excellent suggestions as detailed in her Barnegat Jetty Site Guide. Yesterday I was following Denise Ippolito and she was on the one who spotted the harlequins. Folks visit from many states and whether you are a local or are flying driving to New Jersey just to visit this famed locale, you will learn a ton of valuable lessons. My tips on getting really close to the Harlequins are included in the guide. See more great images and learn about the guide here<\/a>. <\/p>\n

artie is traveling \ud83d\ude42 <\/h3>\n

artie is traveling in the Southern Ocean (Falklands, South Georgia, & Antarctica) and will unable to respond to your questions and comments until after his return on 26 January 2012.<\/p>\n

Shopper’s Guide<\/strong><\/h2>\n

Below is a list of the gear used to create the images talked about in his blog post. Thanks a stack to all who have used the Shopper’s Guide links to purchase their gear as a thank you for all the free information that we bring you on the Blog and in the Bulletins. Before you purchase anything be sure to check out the advice in our Shopper’s Guide<\/a>. <\/p>\n

Canon 800mm f\/5.L IS lens.<\/a> Right now this is my all time favorite super-telephoto lens.
\nCanon 1.4X III Teleconverter<\/a>. Designed to work best with the new Series II super-telephoto lenses.
\nCanon EOS-1D Mark IV professional digital camera body.<\/a> My two Mark IVs are my workhorse digital camera bodies. <\/p>\n

And from the BAA On-line Store:<\/strong><\/h2>\n

LensCoats<\/a>. I have a LensCoat on each of my big lenses to protect them from nicks and thus increase their re-sales value. All my big lens LensCoat stuff is in Hardwood Snow pattern.
\nLegCoat Tripod Leg Covers.<\/a> I have four tripods active and each has a Hardwood Snow LegCoat on it to help prevent further damage to my tender shoulders \ud83d\ude42
\nGitzo GT3530LS Tripod.<\/a> This one will last you a lifetime.
\nMongoose M3.6 Tripod Head.<\/a> Right now this is the best tripod head around for use with lenses that weigh less than 9 pounds. For heavier lenses, check out the Wimberley V2 head<\/a>.
\nCR-80 Replacement Foot for Canon 800<\/a>. When using the 800 on a Mongoose as I do, replacing the lens foot with this accessory lets the lens sit like a dog whether pointed up or down and prevents wind-blown spinning of your lens on breezy days by centering the lens directly over the tripod.
\n Double Bubble Level.<\/a> You will find one in my camera’s hot shoe whenever I am not using flash.
\nBe sure to check out our camera body User’s Guides here<\/a>.
\nThe Lens Align Mark II.<\/a> I use the Lens Align Mark II pretty much religiously to micro-adjust all of my gear an average of once a month and always before a major trip. Enjoy our free comprehensive tutorial here.<\/a>
\nCanon EOS-1D Mark IV User’s Guide<\/a>. Learn to use your Mark IV the way that I use mine. Also available for the 7D and the Mark III here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

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Harlequin Ducks, two pair on the rocks. Barnegat Jetty, Barnegat Light, NJ. DEC 12, 2011. With the the tripod-mounted Canon 800mm f\/5.6L IS lens and the EOS-1D Mark IV. ISO 400. Evaluative metering +1 stop (was still well underexposed): 1\/25 sec. at f\/18 in Av mode. 1\/25 sec. is not a typo. <\/p>\n

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