Serene Life

by garik

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3,119 reputation
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visits member for 1 year, 10 months
seen 17 hours ago

20h
answered Why is it called ISO “speed”?
20h
comment Why is it called ISO “speed”?
"equivalent ISO speed" is incorrect. Sensitivity is not in any way specific to film. See iso.org/iso/home/store/catalogue_tc/…
2d
comment Digital ISO vs Post-Exposure Correction
On camera screen the histogram bins would be quite large so even an extreme modification wouldn't show there in 8-bit images, let alone the 12/14bit the camera works with.
Oct
16
comment What is the theoretical maximum for panorama alignment and blending algorithms get?
The main area of activity is in the 3d and computer vision space at the moment. Taking an image, making a 3d model and reverting back to 2d. Check out research.microsoft.com/en-us/about/our-research/… and youtube.com/watch?v=4LxlhoemR3A for a couple of recent examples.
Oct
14
comment Why does my Nikon D70 reject memory card after infrared conversion?
Is this a card you've used previously in that camera? What is the specification of the card (especially the size?)
Oct
9
reviewed Approve suggested edit on How can I get dramatic shallow DOF with a kit lens?
Oct
4
reviewed Reject suggested edit on I cannot download pics into Elements 9
Oct
3
comment How can I reduce the effect of sodium vapor street lights in night photography?
I know that Nonad (neodymium) filters are used in astrophotography to reduce the effect of streetlighting, maybe an astronomy boffin could do a quick test & tell us if they're at all useful in this situation?
Oct
3
comment Free softwares for editiing
Paint.NET isn't open source any more and hasn't been for a few years. See stackoverflow.com/questions/1693528/…
Oct
3
comment Free softwares for editiing
Gimp is like photoshop in the same way a Trabant is like a Mclaren, but then the price difference is kinda similar I suppose.
Oct
3
comment How is the number of stops of benefit provided by VR determined?
Experience does count for a lot though as the benefit of optical stabilisation is entirely situation dependent as well as photographer dependent. Dropping from 1/60 to 1/15 might be ok for an architecture shot where the subject doesn't move, but it's not going to help at all if your subject is a fidgety person like me.
Sep
30
awarded  Explainer
Sep
29
comment Why do I see posterization in photoshop (and aperture) when I don't see it on my LCD screen?
Maybe I'm just not very good at this sort of thing but I'm not seeing any obvious posterisation here... Are there specific parts of the image which you feel highlight the problem?
Sep
27
reviewed Approve suggested edit on Sigma 24 mm f/2.8 AF Super Wide II vs Minolta AF 28mm f/2.8
Sep
26
comment Sandisk Extreme Pro, 95MB/s - I think I might have bought a fake
I didn't presume anything, I asked what results you got because you hadn't mentioned the most obvious source of information regarding SanDisk products (SanDisk's knowledgebase.)
Sep
25
comment Sandisk Extreme Pro, 95MB/s - I think I might have bought a fake
What results did you get when you did a web search? Something like verify sandisk product authentic...
Sep
22
comment my pictures getting corrupted on my smart phone
Also what happens if you put the microSD card in a card reader in a pc/mac?
Sep
20
revised Comparing LRPS and BPE awards
added 121 characters in body; edited tags; edited title
Sep
20
answered Comparing LRPS and BPE awards
Sep
19
comment Digital ISO vs Post-Exposure Correction
There is an assumption that in the "extended" ISO ranges images are achieved through a mathematical transformation termed a digital ISO boost. The sample images are incongruent with the expected behaviour if that were the case; so either there is a brilliant algorithm at work or the assumption is wrong - meaning the answers suggested by entonio and mattdm are actually the right ones.