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Post by ZacYates on Aug 22, 2016 13:41:14 GMT 12
Hear hear! Thanks to everyone who has shared photos and video for those of us not able to get there.
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Post by John L on Aug 22, 2016 18:30:39 GMT 12
Nice show of Warren and Jaiden in the cockpit. Also a good profile of the Merlin installation
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Post by ErrolC on Aug 27, 2016 13:02:17 GMT 12
Both engines running!
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Post by ZacYates on Aug 27, 2016 14:10:34 GMT 12
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Post by Kereru on Aug 27, 2016 14:40:11 GMT 12
Cheers, Colin
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Post by Dave Homewood on Aug 27, 2016 15:23:48 GMT 12
Great photo Colin.
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Post by ZacYates on Aug 27, 2016 15:29:25 GMT 12
Seconded! Thanks for sharing, Colin.
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Post by ErrolC on Aug 27, 2016 15:30:24 GMT 12
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Post by ZacYates on Aug 27, 2016 15:32:52 GMT 12
Gorgeous shot, Errol!!
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Post by ZacYates on Aug 27, 2016 16:06:33 GMT 12
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Post by Mark Griffin on Aug 27, 2016 17:26:19 GMT 12
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WillM
Flying Officer
Posts: 56
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Post by WillM on Aug 27, 2016 17:29:36 GMT 12
Great shots guys. Thanks for sharing. Really must pop down to Ardmore soon.
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Post by Dave Homewood on Aug 27, 2016 17:32:04 GMT 12
I have just been watching clips of the taxiing on Facebook. Awesome.
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Post by ErrolC on Aug 27, 2016 19:57:09 GMT 12
Has anyone noticed a Facebook page linking to my photo? I can see that I have views from FB, but not from which page. I'm not complaining! I've just added another batch on Flickr. DH Mosquito TV959 at Avspecs by Errol Cavit, on Flickr
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Post by ZacYates on Aug 27, 2016 21:43:18 GMT 12
That might be from me sharing it. Gonna need to share that one too!
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Post by ErrolC on Aug 27, 2016 22:23:13 GMT 12
Thanks Zac. Mark, you did a damn sight better than I would have from over there!
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Post by ErrolC on Aug 28, 2016 11:33:11 GMT 12
No taxi, but here is the earlier engine runs
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Post by baz62 on Aug 28, 2016 18:24:38 GMT 12
No taxi, but here is the earlier engine runs Nice video and still shots Errol. What kind of setting do you use for the video as there isn't the usual weird effects you get from some video. Some lovely prop arcs!
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Post by ZacYates on Aug 28, 2016 18:31:14 GMT 12
AvSpecs has posted a video of the maiden taxi on their Facebook page (link)(you may see a forum member documenting the event). I had such a big stupid grin watching that! Awesome!!!
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Post by ErrolC on Aug 28, 2016 19:50:25 GMT 12
No taxi, but here is the earlier engine runs Nice video and still shots Errol. What kind of setting do you use for the video as there isn't the usual weird effects you get from some video. Some lovely prop arcs! Thanks. It's about understanding your equipment's and your own limitations. This was shot on a Nikon D7000 DSLR (which is moderately old, 2011) with a Nikkor 16-85mm VR zoom lens (a stabilised low-end-of-midrange offering). I didn't use my later D7200 (2015), mainly because I am much less familiar with its video controls at this stage - I've concentrated on using it to take stills. - All but the first section was shot with the sun behind me, which is always useful, especially when the subject is silver!
- I didn't zoom while shooting - the focusing system on DSLRs struggle with it.
- I didn't pan while shooting - this can cause 'leaning' of the shot (caused by the 'top' pixels on the sensor being recorded effectively before the 'bottom' ones - a "rolling shutter"), and the subject was stationary (filming while walking with a DSLR is ill-advised from the video quality POV, and I was on an active airfield!)
- As you can see, my attempts to hold the shot steady were only partially successful, to a large degree because of the wind. I've chosen not to acquire a (full height) tripod (clumsy, wouldn't use it often) which would deal with this most of the time. I decided not to use available stabilisation software in post-processing, because it just smooths wobbles, rather than freezing a spot relative to the frame - I'm considering buying the later type of software.
- Often I was cupping a hand over the built-in mic on the camera, to reduce wind noise. This didn't help with the stabilisation.
- Prop arcs - see below
The really odd propeller effects that you often see (especially from phones or go-pro type camera) are due to the rolling shutter issue interacting with the propeller speed and frame rate of the camera. Mid-aged DSLRs deal with this issue a lot better than your phone (proper video cameras avoid it nearly all the time I think?). The DSLR gets it's data off the sensor a lot faster than a go-pro, and it is easier to adjust the DSLR's settings (shutter speed, typically?) to avoid the problem in any given situation. Prop arcs - short answer, having a slow shutter speed (1/20 or 1/25 in this case, probably should have gone to 1/15). Long answer, I was only able to have that slow a shutter speed (without over-exposing a significant proportion of the silver Mosquito) because a purchased a '3-stop' filter since I took photos of the previous Saturday's engine run. I'd noticed that with a shutter speed as slow as I would like to get good prop arcs, my lens was a letting in too much light (a lens can only 'stop down' so far), and I was 'blowing out' much of the Mossie - just seeing solid white. A 3-stop filter screws on the front of the lens, and only lets one eighth of the light through to the lens (2 to the power of 3 is 8 - you can get higher and lower stop-number filters). So yesterday I could slow my shutter speed down, and still see the detail of the Mossie (as the desired amount of light that the lens was letting through to the camera's sensor was within the limits of what the lens could provide). TLDR: Cheap and/or small cameras often do weird stuff when filming props. More expensive and larger DSLRs are flexible enough that they generally work around potential issues with planning and accessories - even when using their secondary function! Edit: Other people with other aims, skills and equipment would probably do things differently.
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