Serene Life

by garik

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2,896 reputation
716
bio website kigisoftware.com
location Denver, CO
age 45
visits member for 4 years, 2 months
seen Sep 8 at 3:53
Currently an iPhone developer but have used a broad range of languages in the past, particularly Java, C and Scheme.

Aug
23
awarded  Yearling
Aug
18
answered does anyone see technical meaning in going from RAW to an 8 bit TIFF?
Jul
10
comment Foveon x3 sensor
I own a DP2M, and have a lot of experience. I'm just trying to make sure people have all the correct information. A lot of your points also do not take into account the Quattro sensor.
Jul
8
comment Foveon x3 sensor
@MattGrum - Yes in the best case for Bayer you get 45MP, but again that is a scene with only exactly neutral tones present (black to white and grey in-between) which is almost no real world shooting. The "Yellow object contains red & green light" is totally incorrect, there is a specific wavelength for yellow. And in the case where you are taking green and red sensors together - they are not measuring the same spatial location so that does not "add" to the accuracy. It's two 11MP images added together which is still 11 MP or real data.
Jul
8
comment Foveon x3 sensor
@MattGrum - the comment on de-focusing is totally non-sensical. The X3F focuses exactly the same as any other sensor, the layer depths are not enough that focus is altered by the measurement depth. The Bayer sensor has depth too you know, as it uses similar wells (which have depth) to capture photons.
Jul
8
comment Foveon x3 sensor
Also, you claim that the resolution is worse "on average". But the example at the far end you point out is a totally monochromatic subject, a grey cat on a white background. In reality most pictures people take will have color elements so "on average" the detail captured would in fact be much closer to the higher end of detail captured by bayer than the lower end. To claim it's a problem that the Foveon chip delivers constant resolution regardless of color seems much less of a problem than buying a "30 MP" camera that really gives you between 7.5 and 30MP depending on scene color.
Jul
8
comment Foveon x3 sensor
Bayer sensors have topped out over the last few years, coming in either 16MP forms (which have significantly less resolution than modern Foveon cameras) and also higher resolution cameras like the D800e which is a bit below the new Foveon Quattro sensor in terms of detail captured. The D810e coming out soon does not have a higher resolution... as for color reproduction being poor, that is false. At higher ISO noise can be higher but at low ISO color reproduction in Fovoen cameras is excellent, to the point where they make excellent cameras for reference capture of paintings and fabrics.
Jul
3
comment Leaving Apple Aperture for Adobe Lightroom, is there any way to avoid losing my photo adjustments?
Just wanted to let you know Duc I fully support your position as the real question is, how can I migrate over files preserving the ability to keep non-destructive adjustments? Until something actually arrives that does this there is no real answer, just possibilities.
Jul
3
comment Leaving Apple Aperture for Adobe Lightroom, is there any way to avoid losing my photo adjustments?
I disagree, the best "right now" option is to continue to use Aperture for what you already have in there, and possibly use Lightroom for new projects. Going to the work to convert over TIFF files when there is the possibility of later instead importing files with non-destructive adjustments is far more appealing and I think a better use of time.
Jul
3
comment Leaving Apple Aperture for Adobe Lightroom, is there any way to avoid losing my photo adjustments?
There is not a 1:1 mapping for every control - but a mapping that even just handled a close approximation for rotation/cropping/exposure would be incredibly useful and handle many people's images.
May
5
comment Why is my lens only somewhat sharp near the center and very blurry on the edges?
Sorry Patrick, but some lenses just can't be loved and I think this is one of them.
Mar
26
comment Nice cameras for B/W photography?
One note to add to this, is that the Sigma RAW processing software also has a dedicated Monochrome conversion path that is different than the color path - where you can use a color wheel to select the B&W mix you use between the different layers, rather than just using one output color channel after conversion. On the Leica M you cannot apply a digital color filter in post-processing since there was no color data to start with.
Mar
26
answered What settings should I be using to shoot “Supermoon”?
Feb
13
comment How do I find a point-and-shoot camera specifically for bokeh / a very shallow depth of field?
The top one is. All lenses with good bokeh have ranges where the bokeh is not so good, as in the second photo...
Oct
27
comment Besides several Pentax DSLRs, what cameras are rated for operation below 0 °C (32 °F)?
The same is true in Colorado, USA - which is why I answered the way I did, that pretty much any camera will work below freezing.
Oct
24
comment Besides several Pentax DSLRs, what cameras are rated for operation below 0 °C (32 °F)?
Sure, but in the end isn't it more useful to know what actually works rather than what the ratings say? Otherwise you are limiting what equipment you can buy based on an overly conservative estimate. Just because some camera makers do not test at lower temperatures does not mean it will not work - and there is no reason to think Pentax is doing anything in building lenses or cameras that much differently than any other camera maker.
Oct
17
comment How do Micro 4/3s cameras compare with DSLR cameras?
It's not just about the sensor though. A full frame camera gives you a shallower depth of field. FF have artistic advantages that are literally impossible physically for a smaller sensor to match (which is why medium format survives)
Aug
23
awarded  Yearling
Jul
20
awarded  Popular Question
Jul
1
answered What do I need to take photos which accurately show small differences in color?