Guest Contributor – Tregonsee – 03APR2026 – Photo

This was shot in the experimental Aircraft section of the Museum of the USAF.
Details of the shot are that it was shot on a Canon EOS Rebel using a 28 MM lens af F4 1/60th second exposure ISO 800 handheld

The view looks out from the Valkyrie Cafe. The large aircraft in the foreground is the last example of the XB-70 Valkyrie bomber. Also in the frame are the YF-12 (an interceptor variant of the SR71/A-12), two gemini capsules including the Air Force Blue Gemini prototype (never flown) 2 X-24 lifting bodies (famous from the opening sequence of 6 Million Dollar Man), and barely visible to the far right at the back is an X-15.
IMG_0062.JPG
I am a bit surprised that I got as much depth of field as I did at F4, but I was shooting in shutter priority mode as I didn’t think I could hand hold it much below 1/60th

 

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TomD
TomD
4 months ago

XB 70 from the Carter era?

Ed Brault
Ed Brault
4 months ago
Reply to  TomD

No, The Johnson era. The XB-70 flew in 1964-1969. Only two were built. One was lost in a mid-air collision, the other was used for research flights until retired in 1969 and is now on display at the USAF Museum in Dayton, OH.

Tregonsee314
Tregonsee314
4 months ago
Reply to  Ed Brault

Actually it started in the Eisenhower era. By 1960 with the shootdown of Gary Powers in the U-2 it was clear that the 70,000 ft ceiling was not going to protect the bombers any more, and Atlas and Titan missiles were coming online rapidly. The 2 prototypes were finished at a slowed rate and when completed were used for large high supersonic (mach 3+) testing that fed into the Boeing SST (which ultimately was never built). As Ed noted the second test item was lost. It was in a photo shoot General Electric engine who made the 6 engines that… Read more »

TomD
TomD
4 months ago

The picture I posted is of an old late 70’s era lens for a film camera. It looks a little grungy but I haven’t touched it in well over 20 years. This lens has a feature that all lenses had at the time but not any more and I don’t know why. It is called “depth of field preview”. This is set up at f4. See the 2nd ring out from the body? It has the straight vertical orange line with the little 4, 8, 11, 16 on each side of the vertical. Notice that the lens is now focused… Read more »

DOF-Preview
Last edited 4 months ago by TomD
Tregonsee314
Tregonsee314
4 months ago
Reply to  TomD

I think I’ve seen that feature on some SLR’s (OM-1 particularly) that friends had and never quite knew what it was for. The big difference is I was shooting a 18-55 zoom lens (not a classic 50 mm that came with every 35 mm for umpty ump years 🙂 ) zoomed to 28 mm. Looked around and found this cool tool https://www.photopills.com/calculators/dof dialing in my camera, 28 mm, F4 and the XB-70 focus point (The Canard on the front I Think) at 30 M (~90 ft) the calculator spits out a front in focus from about 22M to Infinity, so… Read more »