Orquid "Phoenix"

Orquid "Phoenix"

by ceinmart

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6,498 reputation
824
bio website embedinc.com/olin
location Littleton, Massachusetts
age 57
visits member for 2 years, 4 months
seen 8 hours ago

Electrical engineering consultant specializing in microcontrollers and the circuitry around them. Master of engineering in EE from Rensselaer Polytechnic Institute in 1980.

We are certified Microchip design partners, and have been in the top catagory consistantly since around 2000. Various free downloads related to developing PIC firmware and other things are available at http://www.embedinc.com/pic/dload.htm.


2d
comment A6000 and Sony 55-210mm - At 210mm, with tripod, I am getting a “wavy” distortion to all objects in range
Without a example, this question is just pointless handwaving and guessing.
Apr
19
comment Shooting from a helicopter
The OP specifically said the helicopter will be open door.
Apr
18
comment What must I buy to take amazing product photos?
To start with, you need a fancy bike to make the top picture and a fancy car to make the bottom picture.
Apr
18
comment Embedded jpegs in NEF raw files
@Brian: Why is it different? Because the software uses a different default to show you the picture than the firmware in the camera did.
Apr
18
comment What sort of camera do I need for product photography?
It's not about the camera.
Apr
18
answered Embedded jpegs in NEF raw files
Apr
15
awarded  Enlightened
Apr
15
awarded  Nice Answer
Apr
15
answered Is f/number more relevant than aperture and/or shutter speed?
Apr
14
comment How was this 360° panoramic photo taken?
@Itai: The mechanics seem pretty straight forward to me. With a clamp on the railing or whatever, it seems easy enough for the photographer to move around so as to not be in each individual shot. There is always someplace to stand out of the picture each shot. Probably the self-timer was used to give the photographer a few seconds to walk away. I really don't see a problem here. Also, the lighting is diffuse (cloudy), so the camera is not casting a particular shadow.
Apr
14
comment How was this 360° panoramic photo taken?
@DiAlex: OK, I did.
Apr
14
answered How was this 360° panoramic photo taken?
Apr
11
comment Is this a good example of “Rule of Thirds”?
I really dislike the name "rule of thirds". At best it's a guidline, but certainly no rule. Guidelines can be useful, especiall when learning, but are not substitutes for actually thinking about the composition. Also, I often find that 1/3 of the way into the picture for the part I don't want to feature is too much. Often just 10-20% sky at the top, for example, is all you want.
Apr
10
comment What are the biggest differences between Reversal Rings, Extension Tubes and Macro Lenses?
@rfusca: I'd be careful about the cardboard tube since it could easily shed dust particles onto your sensor. Painting it with flat black latex paint would help lock down the fibers and prevent dust, and might also make the inside less reflective. Then again, the same flat black paint applied to the inside of your extension tubes might do just as well. Good extensions tubes have special flat black coatings and rings inside specifically to minimize internal reflections. Adding a cardboard tube to them would probably make everything worse.
Apr
2
comment Why do I see this yellow color shift at high ISOs and fast shutter speeds?
Exactly what I was going to say, +1.
Mar
29
comment Are these weirdly-shaped purple stains really from particles under the first layer of the sensor, and if so, what can I do about it?
If this dirt is really under the top layer of the sensor, then you should get the camera replaced under warranty.
Mar
27
answered What will be my aperture with a 2× teleconverter?
Mar
26
comment How was this 360° panoramic photo taken?
The answer is several images were taken, the later stiched together by clever software. Such software finds the overlaps between adjacent images and use that to align them properly. It also generally tries to smooth over any steps in brightness between at the stitches.
Mar
26
comment How was this 360° panoramic photo taken?
Actually that's not 360 deg, just 180. Think about it.
Mar
26
comment What settings should I be using to shoot “Supermoon”?
@dfrog: Normal "daylight" scenes with full sun here on earth are usually exposed well with shutter speed in seconds equal to 1/ISO and f/16. That's actually what I expected, but this image is more than 2 1/2 f-stops below that. That is probably because our daylight rule of thumb assumes there are a few white areas in the scene that should be at the top of the sensor range. The moon's brightest areas are well below that, so we can use more exposure and still avoid clipping.