Sujet : Re: Catch a bullet in flight? 1/8000
De : fred (at) *nospam* fred-smith.co.uk (Abandoned Trolley)
Groupes : rec.photo.digitalDate : 28. Jul 2024, 16:21:41
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v85nm4$1iq$1@dont-email.me>
References : 1 2 3 4 5 6 7 8 9
User-Agent : Mozilla Thunderbird
On 28/07/2024 16:03, Alan Browne wrote:
On 2024-07-28 04:11, Abandoned Trolley wrote:
On 26/07/2024 01:03, miked wrote:
On Thu, 25 Jul 2024 19:48:59 +0000, Arcanauta wrote:
>
Il 25/07/2024 20:04, Alan Browne ha scritto:
On 2024-07-24 20:06, Geoff wrote:
On 24/07/2024 7:45 pm, Abandoned Trolley wrote:
On 14/07/2024 22:53, Geoff wrote:
On 15/07/2024 12:41 am, Alan Browne wrote:
>
https://www.nytimes.com/2024/07/14/us/politics/photo-path-trump-assassination.html?unlocked_article_code=1.7E0.iSuZ.18TjxlOqrmN6&smid=url-share
>
<< Photo Appears to Capture Path of Bullet Used in Assassination
Attempt
Michael Harrigan, a retired F.B.I. special agent, said the image
captured by Doug Mills, a New York Times photographer, seems to
show a bullet streaking past former President Donald J. Trump. >>
<<S>>
Am I the only person in here who is wondering why a "professional" photographer would be shooting a practically static subject at 1/8000th of a second ?
Why not? He's shooting free hand at a subject that is gesticulating[1] and moving behind the lectern. Plus the photog is moving around a lot and need to compensate for that too.
Wants a fairly good DOF as well.
Apart from the shutter speed and the fact that it was a "Sony" camera, the article does seem a bit short on technical detail - its quite remarkable that theres no mention of the lens aperture or the ASA rating.
ASA? <derisive snicker>
I just tried my Canon DSLR at 1/8000th in bright daylight, and to get a reasonable exposure I needed to set the camera for 16,000 ASA - you can imagine what the image quality was like.
Funny for someone going on about technical detail that you didn't mention the aperture.
Let's see, some basic exposure math based on old-school sunny-16:
ISO 100 - 1/125 - f/16
Leave it at f/16 you're only 6 stops to 1/8000 <-> ISO 6400.
IOW, no big deal with today's sensors, noise-wise.
And if you trade that 6400 to 3200 and open up to f/11 - still decent DOF and less noise again.
Keep trading f/8 (bottom of the sweet spot, decent DOF) ISO 1600. Little noise with today's sensor.
For the above I used sunny-16 as a rule - but could easily play 1 stop either way depending on the camera used (sensor).
ASA? ROFL.
[1] https://youtu.be/QAxfBHelonw
Sorry - I didnt realise I was "going on"
Re: Catch a bullet in flight? 1/8000
Re: Catch a bullet in flight? 1/8000