Samsung SafetyFlash feature

SA
Posted By
sm_adelhoff
Apr 21, 2005
Views
208
Replies
6
Status
Closed
Samsung’s states that their U-CA 5 camera has a special feature to cope with available light situations. Instead of a) using a flash and ruining the mood or b) use a longer exposure time and have the picture unsharp, the camera automatically takes two pictures. One with a short exposure time, and the other with a longer exposure. The result is composed from the colors from one picture plus the contours of the other picture.

I only found a German explanation <http://www.samsung-cameras.de/products/uca5/sf_info.html>, no english one.

Does this technique work well?
How can it be emulated in Photoshop?

Sven
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D
deebs
Apr 21, 2005
If the link survives transmission through cyberspace there should be an auto translation round about here < http://translate.google.com/translate?u=http%3A%2F%2Fwww.sam sung-cameras.de%2Fproducts%2Fuca5%2Fsf_info.html&langpai r=de%7Cen&hl=en&ie=UTF-8&oe=UTF-8&prev=%2Fla nguage_tools>

Avant browser is wonderful in this respect (Tools > Translate) and IMHO a worthy addition to supplement FireFox and Internet Explorer
J
johntolliday
Apr 21, 2005
I worry that the long verschlusszeit and multiple „Doppelaufnahme&#x20Ç; will result in Bewegung der Themen!
D
deebs
Apr 21, 2005
Ok I agree 🙂

Autotranslate may need a bit more development but for an almost instantaneous result it can’t be that bad

I think one of the words that did not translate may be an unkind description/label applied to intrusive photographers
SA
sm_adelhoff
Apr 22, 2005
Cool, I didn’t know that auto translate has evolved so far. Although there are some weird expressions, the main idea comes through. When I remember the beginning of auto translating …

But back to my initial question. Does anyone know whether SafetyFlash works as promised and what it really does (in terms of Photoshop image procesing)?

Sven
D
deebs
Apr 22, 2005
It sounds as if they have developed or purchased an algorithm that takes edges from the sharper image and fill values from the slower image.

I guess there should be an equivalent construction (or even better?) under Photoshop.
SB
Scott_Byer
Apr 22, 2005
In Photoshop CS2, there sure is – Merge to HDR. Using a camera that has exposure bracketing, take multiple exposures (preferably from a tripod or other stable mount) with enough f-stop range to capture the dynamic range in the scene. Merge to HDR then merges those exposures into an HDR image that can then be converted to a standard 16 bpc or 8 bpc image using algorithms and curves that allow the dynamic range to be appropriately compressed into a single image.

-Scott

wrote:
It sounds as if they have developed or purchased an algorithm that takes edges from the sharper image and fill values from the slower image.

I guess there should be an equivalent construction (or even better?) under Photoshop.

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