BartyLobethal

BartyLobethal

Lives in Australia Adelaide, Australia
Works as a Lobster Grooming Consultant
Joined on Apr 21, 2011
About me:

Inventor of Dehydrated Water.

Comments

Total: 183, showing: 1 – 20
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On Samsung working on slimmer RBW camera sensors post (80 comments in total)
In reply to:

ProfHankD: This is an interesting variation on the old CMYG and RGBW CFAs. The biggest issue I see is that RB will get far less light than W pixels, meaning they'll probably be noisier, and hence G derived from W-(R+B) will be noisy too. Then again, you could almost get away with just using the W channel as G... or W is roughly Y in JPEG's YUV. W pixels also will saturate fast, possibly limiting dynamic range. In sum, there's a lot to empirically test here....

One way to prevent W channels from saturating ahead of the R & B channels would be to include ND filtering for the W channel.

Direct link | Posted on May 29, 2015 at 23:42 UTC
In reply to:

erichK: The problem is, in fact, real.

As a former employment counselor for immigrant professionals, I have come to know a dozen+ pros from all over the world. Those *without* neck & shoulder problems are in the minority: big, fit usually younge guys. (This is a major reason that belts and vests, sling bags and more elaborate solutions as Katas convertible backpack-sling, Thinktank's rotating bags have become so popular.)

What matters is the weight, balance and bulk of the all the parts of - and the total package of - the kit needed to do a particular "shoot" or combination of shoots. While this may mean an 11"x14" view camera and tripod for Clyde Butcher, many great photographs as well as countless reviews and user reports demonstrate that mFT cameras and lenses from Olympus and pansonic (and the mirrorless offerings srom Sony and Samsung) can indeed do the job,

Olympus has has its problems. It has also long produced smaller, lighter camera kit much needed by many.

You're forgetting about equivalence. Because the sensor is only one quarter of the size of a 'full frame' sensor, you have to apply a 2x multiplier to arrive at the effective weight. In other words, although actual measurement may indicate that m43 systems only weigh half as much as full-frame systems, in reality they are effectively twice as heavy.

Direct link | Posted on May 25, 2015 at 09:52 UTC
In reply to:

Valiant Thor: It appears that the target audience for this kind of advertising is the mobile home, couch potato crowd whom I doubt would purchase such a camera anyway. I cringe when I think what good could have come from the money and resources it took to produce and run these ads. I really miss the thoughtful age of elegance, sophistication and taste.

When was that?

Direct link | Posted on May 21, 2015 at 00:02 UTC
In reply to:

justmeMN: Olympus owners suffer from Small Sensor Syndrome. :-) All of their friends have bigger sensors than they do, and it's just embarrassing. They've tried those sensor enhancement products that you can buy on the internet, but none of them worked. :-)

As a former 'full-frame' user I opted to have a sensor-size reduction procedure because I understood that it's not the size of your sensor that matters, it's how you use it.

Direct link | Posted on May 20, 2015 at 23:18 UTC
On Mare Island Ship Yard in the Industrial site – HDR challenge (4 comments in total)

As a general statement, I don't particularly enjoy 'extreme' HDR, but it works in some circumstances. This is one of them. I think the 'industrial' processing suits the industrial subject very well.

Direct link | Posted on May 8, 2015 at 23:04 UTC as 3rd comment
On Metz mecablitz 26 AF-1 Quick Review article (69 comments in total)

Why is it a "gun"? Is it not a flash?

Direct link | Posted on May 7, 2015 at 21:56 UTC as 13th comment
On E' la Belle Epoque in the A portrait in Corcos style challenge (16 comments in total)

Lovely model (the photo's OK too).

Direct link | Posted on May 6, 2015 at 12:39 UTC as 2nd comment
In reply to:

rgames1: Interesting but I'm skeptical that the variation in number of photons can cause anywhere near the amount of noise produced by the camera electronics.

The argument is made by comparing to tubes collecting raindrops. However, nowhere in the article does it say how many photons are captured in the shadow pixels, so the comparison is never backed up with any data. Making the argument requires that that number be established then compared to the variation in number of photons.

So, how many photons are captured by each pixel in the shadows? Further, what is the variation in that number? My strong suspicion is that the variation in number of photons in any part of the image is still extremely small compared to the number captured but that information is nowhere to be found. That information is implied by the analogy but never quantified.

The answer to those questions will show whether or not the analogy is valid.

rgames

In other words, the ratio of photons captured in the brightest part of the image to those captured in the dimmest part of the image can be 100:1 or greater.

Direct link | Posted on Apr 27, 2015 at 22:17 UTC
In reply to:

jl_smith: This is awesome - I can't wait to apply this knowledge to take better photos of cats, or at least things sitting on my desk
:D /jest

One of the take-home messages is to ensure all your cats are mid-grey or lighter.

Direct link | Posted on Apr 27, 2015 at 21:32 UTC
In reply to:

RichRMA: FF cameras will likely always have better noise control than smaller format bodies, but as they creep up in pixel count we've seen an increase in image noise. The D810 is visibly noisier than the D4s, for example, solely due to pixel size. There will come a point where (if they get to 80-100mp) a FF will be noisier than a standard 24mp APS. Couple that with sensor differences (example, Samsung's backlit or Fuji's sensors) and different in-camera processing and the idea of absolute noise control based solely on sensor size becomes less "absolute."

What happens to all that noise when you downsample your 100MP image to 24MP?

If you compare a 100MP FF and 100MP APSC, how does the FF sensor do in that scenario?

Direct link | Posted on Apr 27, 2015 at 21:31 UTC

"...light black and light light black...". Would those be grey?

Direct link | Posted on Apr 20, 2015 at 21:42 UTC as 9th comment | 5 replies
In reply to:

Sezano: “If you take a picture of a human that does not make him noble, there is no reason to take this picture. That is my way of seeing things.” – Sebastião Salgado

Right, so dictators, mass murderers, terrorists, rapists etc should either never be photographed, or only photographed in ways that make them look "noble"?

Direct link | Posted on Apr 13, 2015 at 09:02 UTC
In reply to:

yonsarh: Just incase for those who don't know about North Korea. North Korea is a collectivism society, where all people are grouped together instead of western capitalistic society,people tolerate in political left and right each other, but for North Korea, they don't tolerate each other. For Visa, I heard there are tourist company that can apply and gives you North Korea visa.

Nonsense. North Korea is a small marsupial of nocturnal habit, endemic to the coffee houses of Rundle Street, Adelaide.

Direct link | Posted on Apr 12, 2015 at 21:57 UTC
In reply to:

rallyfan: Why harass the three elderly women in Spain?

I'm starting a support group for Post Photographic Stress Disorder (PPSD) for people that were made feel briefly uncomfortable by having their photograph taken by a passing stranger.

This shouldn't be confused with PPSD (Post Processing Stress Disorder) which aims to help people traumatised by HDR.

Direct link | Posted on Apr 12, 2015 at 21:53 UTC
On Sony Alpha a7 II Review preview (814 comments in total)

I think they undermine the performance of their own sensors by not offering at least a lossless compression option.

Direct link | Posted on Mar 31, 2015 at 21:34 UTC as 166th comment | 2 replies
In reply to:

aramgrg: A good placebto start for people trying to be overly original.

I agree that the method - although often of interest in its own right - is irrelevant when evaluating the output solely on its own terms. In the right hands there is no reason this camera can't be used to produce interesting work.

But there isn't any output to assess here, just a self-consciously 'retro' device that outputs an image that will only ever be reproduced by quintessentially modern means.

It's like musicians who eschew digital recording because it's 'clinical' and 'analogue has soul' or some other rubbish, when the overwhelming bulk of their output will be, ultimately, in digital form. A comical irony that deserves lampooning.

Direct link | Posted on Mar 31, 2015 at 01:04 UTC
In reply to:

Hi b - yes, that's exactly what happened. I didn't object to the urination so much as the fact that they came and went on fixed-gear unicycles laminated from recycled Capiello prints.

Thanks for your remarks about my work. It's particularly nice to get positive feedback from someone with some depth of formal knowledge of photography.

Direct link | Posted on Mar 31, 2015 at 00:52 UTC
In reply to:

It'll become sufficiently "DP" if the hipsters want any more than half a dozen people to see how awesomely retro they are - 'cos then they'll have to digitise it. They'll probably do it on a scanner with a solid wood case though...

Direct link | Posted on Mar 30, 2015 at 20:37 UTC
In reply to:

aramgrg: A good placebto start for people trying to be overly original.

Yep. Total Hipster.

Direct link | Posted on Mar 30, 2015 at 20:34 UTC
On Fujifilm X100T Review preview (659 comments in total)

Why did it only get a Mauve award when it's the super bestest camera in the Milky Way Bar and should have got a Paisley award!?!?! It's pretty obvious that dpreview are only interested in Yak husbandry etc etc.

Direct link | Posted on Mar 26, 2015 at 11:34 UTC as 61st comment
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