Time to be with your loved ones

Time to be with loved ones

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1,734 reputation
1514
bio website groovbird.blogspot.com
location Wetteren, Belgium
age 38
visits member for 3 years, 9 months
seen yesterday
I like photography, music and electronics.

Mar
14
comment How to rate the optical quality of a used lens?
You can smell the lens, because cigarette smoke leaves a pungent residue that you can pick up easily if you hold your nose to it. +1 on the fungus. You can check by pointing the lens to a bight sky a peering into it from very close in the back.
Jan
2
revised What can a fisheye lens be useful for?
Removed old link, included examples directly.
Dec
28
comment What can a fisheye lens be useful for?
You're right. I've abandoned my Flickr account. I'll see what I can do.
Jul
15
awarded  Yearling
May
12
awarded  Nice Answer
Feb
13
awarded  Nice Answer
Jan
18
comment What is RAW, technically?
let us continue this discussion in chat
Jan
18
comment What is RAW, technically?
The DNG format supports embedding the original RAW file in its entirety. Why is that, you think? Some camera vendor may come up with a system that allows sensor information that is so complex that it cannot be represented by any of DNG's standards, so no, DNG is not RAW, RAW is by definition up to the camera vendor, so it's proprietary, and conversion from RAW to DNG results unavoidably in data loss because you can't prove that it will never result in data loss. Just because you don't know what is lost, or you don't care about what is lost, doesn't mean that it's not lost.
Jan
18
comment What is RAW, technically?
Lastly, you may have a camera that shoots DNG RAW images, so there won't any loss of information, but that does not apply to DNG in general.
Jan
18
comment What is RAW, technically?
It happened to me years ago. I naively converted some of my RAWs to DNG and threw away the originals, only to find out that DxO (a product that publicly states that it supports DNG) did not want to read my DNG files. Live and learn.
Jan
18
comment What is RAW, technically?
@FakeName The DNG converter does not have any more information about the picture that was taken than what's in the RAW file that's being converted, so it can't add information to it. All it can do is take all the information that comes from the RAW file that fits in the DNG specification, and discard everything else. That may or may not be more or less than what you care about, but it's a simple fact. Some camera vendor may put in more information in the RAW format than that is supported by either the DNG specification or the DNG converter used at the time of conversion.
Jan
17
comment What is RAW, technically?
@FakeName DNG is an abstraction of RAW. It serves a similar purpose, but it's not the same thing. RAW means, by definition, proprietary, not open, and every bit of information that was available at the time the picture was taken. DNG, by definition, removes some of that information.
Oct
8
awarded  Student
Oct
2
comment Can I use the Canon 5D Mark II to playback edited video?
@dpollitt I concur
Oct
1
comment Can I use the Canon 5D Mark II to playback edited video?
I'm fairly certain it's 1080p. My TV reports it as such, and there's really a lot of detail in the picture. Also, I have an older WDTV that I could use, but it needs a power supply, and as such is not as mobile.
Oct
1
asked Can I use the Canon 5D Mark II to playback edited video?
Aug
6
comment What are alternatives to a tripod when I can't take one along?
I've had success up to a full second exposure. How long do you need?
Jul
15
awarded  Yearling
Feb
15
awarded  Populist
Oct
7
awarded  Nice Answer