It's a bird

by Vian Esterhuizen

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764 reputation
516
bio website
location California
age
visits member for 3 years, 4 months
seen Apr 27 at 19:37

I am a Systems Engineer with many years of experience in electronic systems, including communication systems, network systems, and radar systems, with a focus on signal processing and architecture. "Know your customer and his/her needs." My hobbies include photography, yachting, software development, writing, and foreign languages.

If you don't know what to do with your spare time, go walk your dog. If you don't have a dog, walk someone else's dog. It's a better way for you to spend your time than what you are doing right now. If you think you don't have any spare time, then you probably don't have a dog.


Apr
7
awarded  Good Answer
Mar
12
revised Why don't we focus at the nearest hyperfocal distance to get everything in focus?
Added third example
Mar
12
answered Why don't we focus at the nearest hyperfocal distance to get everything in focus?
Mar
4
comment What's the generic term for portable flashes (Speedlites, Speedlights etc)?
I don't think this nails it down, but it's a very good answer as far as background information goes. +1. (I don't think there is a commonly understood generic term for portable flashes. Terms like Speedlight make people think "trademark" specific despite the trademark facts.)
Mar
4
comment What's the generic term for portable flashes (Speedlites, Speedlights etc)?
Searching the USPTO and Madrid International Trademark System shows neither Speedlight nor Speedlite are trademarked terms used in photography.
Feb
28
comment How to determine if a new lens is a subpar copy?
@Your referenced duplicate doesn't explain anything about comparing with what can be expected (lens specs). The summary in Itai's answer begins "Then comes the subjective part. You need to judge if this is the quality you expect from such a lens." I'm looking for something objective that I can compare the lens in my hand to the objective expected performance. The referenced question doesn't go there. If nobody really has an objective way of doing this, and return lenses just because they don't seem right (subjectively), then maybe that's the answer.
Feb
28
comment How to determine if a new lens is a subpar copy?
I chose that review arbitrarily, but I think you're right. (It was the first lens at the top of the B&H list that had the kind of wording I have seen so many times with lenses.) I'm the kind of guy who was always fine when my color TV (when not everyone had color TVs) was not color adjusted perfectly, and couldn't understand the fuss when someone felt it needed to be adjusted. But I'm serious about technical quality with photography. I wouldn't necessarily know yet if my $1600 lens is a dud if it acts like a $500 lens. I'm trying to figure out how these reviewers know.
Feb
28
asked How to determine if a new lens is a subpar copy?
Feb
16
awarded  Yearling
Jan
14
awarded  Notable Question
Jan
8
comment How can I correct a blurry viewfinder beyond the built-in adjustment?
We might assume you only need simple vision correction. But from recent personal experience I can tell you that an eye exam may warranted. You may have an uncorrectable (without surgery) problem, such as a cataract or even a detached retina. I recommend that you have your eyes checked if you aren't absolutely sure. I just went through this myself, and if I had waited much longer in seeing an ophthalmologist, I might be blind in one eye.
Jan
5
comment Why don't sensors on satellites and rovers degrade as quickly as DSLRs on the space station?
Do you have any references to the NASA report where we can see the details. Without that, even those of us who have worked on spacecraft wouldn't be able to do more than speculate. And don't be mislead to think that digital imaging came from astronomy. It was used to replace film in surveillance satellites, and the sensors weren't like the ones in your DSLR or video camera.
Nov
18
comment What setup would I need to photograph the numbers of a plane overhead?
How close is the plane? That might make a difference. Are you able to operate the camera yourself, or do you expect this to happen automatically?
Nov
16
revised Need to know the size for printing a poster
Corrected a math error. Distance was off by factor of ten.
Nov
15
answered Need to know the size for printing a poster
Oct
22
awarded  Popular Question
Sep
24
awarded  Autobiographer
Jul
12
awarded  Curious
Jul
11
comment In Lightroom how do I determine what collections an image is in?
@EsaPaulasto - strictly speaking, yes, it looks like a comment. But it's also THE answer to my question.
Jul
11
comment In Lightroom how do I determine what collections an image is in?
That was something I didn't know about. It gives me a list of collections that the image is in.