Nikon Wednesday 2015: #50

[Matt Laur]

<blockquote>

<p><strong><em>Important:</em></strong> please keep your image under 700 pixels on the longest side for in-line viewing, and <em><strong>please keep the FILE SIZE UNDER 300kb</strong></em>. Note that <strong>this includes photos hosted off-site</strong> (at Flickr, Photobucket, your own site, etc).<br /><br />Are you <strong>new to this thread?</strong> The general guidelines for these Wednesday threads are <strong><a href="/nikon-camera-forum/00W7km" rel="nofollow">right here</a></strong>:<a href="/nikon-camera-forum/00W7km" rel="nofollow">http://www.photo.net/nikon-camera-forum/00W7km</a>. This forum's moderators are allowing up to three images per week, so share some work!</p>

</blockquote>

<p>What are we to do with these fancy Nikon cameras and lenses, if not to put them to work as part of solving important real-world problems? I've always been a more visual guy when it comes to math, so when we were down to our last piece of leftover chicken parmesan from an entree clearly meant for several people, I was curious just how much surface area we were dealing with. One thing leads to another, and here it is Nikon Wednesday.<br /><br />Remember when your math teacher told you to "show your work" on those word problems? Feel free to mark up your image this week, with any valuable or ridiculous additions that can show us how you were thinking at the time. Or not! Mostly, just take a moment out of this busy month and share a photo or two. Looking forward to them as always.</p><div></div>

[Javier Gutierre]

<p>D7100 with Tokina 12-24 F/4<br>

<img src="http://3.bp.blogspot.com/-GNsEa2TSF4o/Vm0kfJT-tTI/AAAAAAAAEA8/dd2bPo6VNyY/s1600/China%2BTown%2B12%2B12%2B2015%2B%25286%2529.jpg" alt="" width="700" /></p>

[sjmurray]

<p>Playing around with my old 28mm ais with close focusing (crc). (Oops, that was iso 1600 at 1/40th sec.)</p><div></div>

[sjmurray]

<p>Lydia again, this time with my ais 50mm f 1.4 manual focus lens.</p><div></div>

[sjmurray]

<p>This evening our granddaughter fell asleep before supper on the couch, accompanied by our dog, Violet.</p><div></div>

[Jon Eckman]

<p>Had to ask a photographer friend what this was on my image before the world of digital sensor dust was exposed to me. I guess the math is pretty simple here - the more you use your camera, the more likely the dust will settle. </p><div></div>

[Jon Eckman]

<p>Here's one without dust (not visible anyway)</p><div></div>

[ChrisSpeaker]

<p>Here are some bird for me this week. Nikon Df w/ Nikon 300mm F4 PF.</p><div></div>

[ChrisSpeaker]

<p>#2</p><div></div>

[ChrisSpeaker]

<p>#3</p><div></div>

[ShunCheung]

<p>Holiday performance<br>

Nikon D750 with 70-200mm/f2.8 @ 70mm, f4, 1/200 sec and ISO 2800.</p><div></div>

[ShunCheung]

<p>Red-Billed Tropicbird<br>

Nikon D750 with 80-400mm @ f5.6, 1/1600 sec, 400mm and ISO 220</p><div></div>

[Member69643]

<p>Steve J Murray - love your photo. What a peaceful and charming image. </p>

<p>For me, we've had a ton of rain, so I hauled out a lesser camera to brave the elements. Funny how former top-notch gear is casually exposed to the weather because it's so cheap to replace if needed. Despite the steady drizzle the N8008S kept right on humming along.</p>

<p>Raindrops "spoil" this picture, but it does add to the feeling of wetness.</p><div></div>

[lornesunley]

<p>Magic depth of field that disappears cages ....</p><div></div>

[Matthew Currie]

<p>I'll let someone else do the drawing. Here's a pocket park in Middlebury, VT.</p><div></div>

[rodeo_joe1]

<p>Forget the maths Matt, you've made me hungry! So here's the lunch I'm about to eat. The sandwich filling is peppered smoked salmon with an orange-mustard sauce garnish if anyone's interested.</p>

<p>Tech info: D7200 + kit 18-140mm lens + bounced on-camera I-TTL speedlight.<br>

Now excuse me while I eat.</p><div></div>

[rodeo_joe1]

<p>OK I've now eaten and have time for some maths.<br>

I used the "magic wand" tool to outline the sandwich and tomatoes, and then flood-filled the resultant area with red. The histogram tool tells me I have 161,613 red pixels out of a total of 334,560. This means that 48.3% of the frame area is edible - correction <em>was</em> edible.</p><div></div>

[Jerry_]

<p>Zoom-1.</p><div></div>

[Jerry_]

<p>De-focus and Christmas tree lights.</p><div></div>

[GlennS]

<p>Birds and boat returning to port, Southern Vancouver Island...</p><div></div>

[scott_sanford1]

<p>1 squirrel + lots of peanuts</p><div></div>

[Matt Laur]

Excellent applied mathematics, Rodeo!

[User_6502147]

<p>Many of you recognize the spot - Half Dome in Yosemite. The pic was taken from Olmstead Point and with quite a bit of magnification (roughly 5 miles away). What you see is a 120% of the original....actually, pretty nice photo. As is, I figure it would print (measuring on the screen) 30x48"....that's my math and I'm sticking to it. Oh, and if your eyes are playing a game on you....there is a person standing on the diving board at the top of H. Dome.</p>

<p>Les</p><div></div>

[diane_madura]

Shun's Jingle Bells photo...sooooo cute!

[ShunCheung]

<p>Thanks Diane. It was fun to watch a bunch of third-grders perform.</p>