Lightnings taking a ride

by ceinmart

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2,802 reputation
515
bio website detlevcm.eu
location United Kingdom
age
visits member for 3 years, 8 months
seen 19 hours ago

Currently a PhD Student in Aviation Fuel Thermal Stability with a BSc in Mathematics. Programming either for my course or just little stuff because I can.

Further I am a hobby photographer - more details are to be found on my website: http://detlevcm.eu

A free basic guide to photography written by me is available at: https://detlevcm.wordpress.com

Some programming: https://github.com/DetlevCM/chemical-kinetics-solver


Aug
15
comment Can low tempertures permanently decrease the life of a camera battery?
Low temperature = slower reactions -> so chemistry slows (!!) down when cold which actually makes it better for storage. Lithium batteries actually hate heat and will degrade faster from higher temperatures. They will also die if discharged fully (when you see 0% it isn't really 0%, there are generally still about 3V per cell left.)
Aug
15
comment In terms of “image quality”, is the sensor the only spec of a DSLR I should look at when shooting RAW?
The best sensor in the world won't help if you cannot buy a good lens for it - so that could be worth looking at too. Other than that, yes, the sensor is the most important (recording/shooting raw) plus whatever read out circuitry is employed in the camera, but that isn't advertised.
Jul
27
comment How do I accurately and objectively capture the color of the setting sun?
Just some thought for you ;) - what is the difference between yellow light and white light reflected of a yellow wall? - You end up with the same problem, you need to calibrate. The white balance is required to balance the individual colour channels in connection with the "tint" (as Capture One calls it).
Jul
22
comment Why is Picasa ruining my raw files
My guess is that this is a conversion without the camera profile - a RAWTherape conversion will look similar without a camera profile. A camera profile covers things like weighing the individual RGB channels, response of the sensor to individual colours etc.
Jun
19
comment What is the best way to care for batteries?
@Nelson Good point, though storing (away from moisture) in a freezer would significantly slow down the effect.
Jun
5
answered Is a TTL wireless flash trigger something meaningless?
Jun
5
answered What is the best way to care for batteries?
Jan
28
comment How does a stitched panorama compare with a wide-angle lens?
@inkista you might want to add that link into your answe
Jan
27
answered How does a stitched panorama compare with a wide-angle lens?
Jan
7
comment How can I set my Canon 5D Mark II to JPEG only?
@matt I personally shoot RAW only - I can create JPEGs at home. Space may be an issue - but this is possibly more of a planning issue. I recently got the G7 X for a holiday - my 5D MK II takes CF cards. -> I bought one 64GB SD card for the G7 X for 30 pounds and that sorted that. (Ironically that means I have more space on 1 SD card than on CF cards....) - Buying a card that is large enough for at least 1 day isn't hard - nor are they that expensive any more in relative terms.
Jan
7
comment How can I set my Canon 5D Mark II to JPEG only?
@dpolitt name a single case where not having the RAW is a benefit. Correct, there is none. There is a special case where you may need an immediate JPEG - e.g. the aforementioned photojournalist, but then you can shoot JPEG + RAW.
Jan
7
answered How can I set my Canon 5D Mark II to JPEG only?
Jan
5
comment Easiest way to have Lightroom destructively replace RAW files with TIFF files?
Do tiffs really contain less information? for a 5x5 pixel image, a tiff needs 5x5x3 pixel values, a raw file needs 6x6x1 -> one more in the width, but just one brightness value per point rather than three colours as in the tiff. (raw data from a bayer array vs. a rendered image) Then there is the question about how efficient bit depth is handled, lossless compression etc.
Dec
24
revised Simple comparison of LightRoom 4, Corel AfterShot Pro, DarkTable
added 284 characters in body
Dec
23
comment Is Lighroom 5 available only as subscription?
From this quote: "I don't trust Adobe" I'd suggest you look at alternatives I rather like Capture One Pro. But tenmiles gave you the right answer - you can buy it still.
Dec
23
comment How can I remove shine on someone's face in Lightroom?
The only think I can think of is highlight reduction or dodge and burn to reduce local highlights. But that won't necessarily create a good look and may give a dull grey.
Dec
20
awarded  Yearling
Sep
24
awarded  Autobiographer
Sep
15
comment Where does the price premium of full-frame come from?
Good answer - immediately remembered that as well when I saw the question. It does bring up an obvious question though - why not manufacture different sensor sizes (of the same generation) on one wafer to make the most use of it...
Apr
24
answered Software for gigapixel photo stitching