Picture Of The Day

bside123 · « **Reply #1740 on:** 3 Sep 2012, 12:35 am »

Quote from: JakeJ on 3 Sep 2012, 12:13 am

I'm gonna go out on a limb here but...

I believe those intakes are actually the same size and it is, in fact, camera lens distortion and the angle of the shot that is causing the illusion. Look closely at the Air Force "Star" emblem and how it's stretched in the "bomb bay doors open" shot.

I'm just sayin'.

Looks like lens distortion to me too.

Russell Dawkins · « **Reply #1741 on:** 3 Sep 2012, 02:21 am »

In looking more closely on the Lockheed product page: http://www.lockheedmartin.com/us/products/f22.html

It seems most likely what I'm seeing is a function of the angle the intakes are swept back and the angle of view in the two photos I mentioned. The port intake in both cases is being seeing more nearly square on, whereas the starboard one is being viewed at much more of an angle across the mouth.

Sorry for the diversion. Lockheed do make some amazing aircraft (and those are great pictures!).

audiogoober · « **Reply #1742 on:** 3 Sep 2012, 06:14 pm »

jhm731 · « **Reply #1743 on:** 4 Sep 2012, 08:21 pm »

thunderbrick · « **Reply #1744 on:** 6 Sep 2012, 04:39 am »

A little real estate job. This was the kitchen. In the pool house.

bhakti · « **Reply #1745 on:** 7 Sep 2012, 03:03 am »

Hamburg 2012

jvc · « **Reply #1746 on:** 7 Sep 2012, 07:25 pm »

A couple more of my favorite models.............

brooklyn · « **Reply #1747 on:** 7 Sep 2012, 08:05 pm »

Quote

A couple more of my favorite models.............

I like your humming bird pictures, here's one of mine.

Did you use a camera lens or use a digiscope?

jvc · « **Reply #1748 on:** 7 Sep 2012, 08:31 pm »

Quote from: brooklyn on 7 Sep 2012, 08:05 pm

I like your humming bird pictures, here's one of mine.

Did you use a camera lens or use a digiscope?

Thanks. I like your's too. I like how the wings are straight up in the air.
Nikon D7000 and Tamron AF 70-300mm VC lens. I don't even know what a digiscope is.............

Jon L · « **Reply #1749 on:** 7 Sep 2012, 11:43 pm »

My Lumodi 14" beauty dish just came, which I intend to use as my portable BD on camera bracket or tripod. It's surprisingly LIGHT (good) but quite flimsy/plasticky (bad).

IMG_20120907_155902 by drjlo1, on Flickr

SAM_0081A by drjlo1, on Flickr

brooklyn · « **Reply #1750 on:** 7 Sep 2012, 11:53 pm »

Quote

I don't even know what a digiscope is

Digiscoping is when you take a field or spotting scope and mount a camera on it, you have to use a tripods because the slightest movement at that high magnification will cause blur.

I haven't had time to use the outfit at this point but I'm set and ready to go.

brj · « **Reply #1751 on:** 11 Sep 2012, 12:41 am »

Quote from: Russell Dawkins on 2 Sep 2012, 06:40 am

In those last two shots of the Raptor, I notice that the port air intake appears larger than the starboard intake. I believe they're adjustable - at least they were on jets I am familiar with from my Airforce days, to ensure the shock wave occurred early enough to keep the airflow through the compressor subsonic - but I can't imagine a situation where it was appropriate to have one distinctly different from the other.

I find it difficult to believe it is just due to the varying perspective, but...

Hi Russel.

The Raptor has fixed inlets that are symmetric from left to right, so any differences you're seeing are a matter of perspective and lighting. The gap between the fuselage and the inlet proper is the boundary layer diverter, which diverts the low momentum air produced by friction along the fuselage surface from being ingested by the engine.

The F-15 Eagle had movable inlets to help optimize inlet compression, and thus engine performance, across the Mach range of the aircraft, but aside from being heavy, complicated and requiring more maintenance, movable inlets are challenging to make stealthy. (Moving parts tend to leave gaps between them, which promote impedance mismatches when energized by incoming radar energy. Just as impedance mismatches in your digital cable will set up reflections within the cable, so will the impedance mismatch across a surface gap - reflecting that radar energy and hindering efforts at "stealth".)

brj · « **Reply #1752 on:** 11 Sep 2012, 12:48 am »

Quote from: PeteG on 1 Sep 2012, 10:42 pm

The jet was a good distance away I was shooting 400mm on a crop sensor (Canon 7D = 640mm) and the picture was chopped 70-80%, also got a cool look underneath with the bomber doors open.

More nice shots, Pete! I don't usually want more pixels than the 12 MP I have now, but the occasional need for large crops would be one of those exceptions in which I'd like your 18 MP...