Lives in United States Portland, OR, United States
Works as a Engineer
Joined on Jun 30, 2005


Total: 46, showing: 1 – 20
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On article Opinion: Park vandals need to be stopped (337 comments in total)
In reply to:

mcshan: I saw the video and the only sad part was the rock didn't land on top of them.

Nocket is a selfish vandal who should have received greater punishment.

Talk about a "me first" way of thinking.

Agree - that would be the most fitting thing death by their own stupidity. Of course their family would probably file a lawsuits againt Oregon State parks for have an attractive (to morons) nuisance.

Link | Posted on Sep 8, 2016 at 01:22 UTC
In reply to:

newworld666: Who needs to underexpose more than 2Ev ? for a while those comparison at -5EV or -6EV are just ridiculous and useless ..
The king of such feature is unable to keep correct colours at any iso level ...

who cares to use -4, -5, -6 EV pictures with totally wrong colours ?

Nikon managed to make 25600 as good as possible

and better than 1Dx

This just mean in 8bits JPG files you can get 8EV full dynamic at 25600 iso which sounds just amazing never reach before with true colours.. much more important than the ridiculous -5EV at iso 100 ..

It is not underexposure that is the object of this high dynamic range, but rather the ability to lift the shadows that landscape shooters are looking for. That said, typically, you don't typically need to use more than+3 ev to do that. Occasionally, when shooting s silhouette against a bright sky you might need considerably more.

Link | Posted on Mar 29, 2016 at 16:28 UTC

The high ISO improvement over the D750 is less than 1/2 ev at most - which is negligible. Any ISO over 50K is useless - except maybe for surveillance purposes (or abstract art, perhaps). Does not appear that they have changed the Bayer CFA or gone to BSI - which are about only areas to improve sensitivity.

This also does not bode well for a significant improvement in the D500 sensor at high ISO. We are in the era of photon limited sensors.

Link | Posted on Mar 28, 2016 at 19:47 UTC as 57th comment | 5 replies
On article Taking it easy: Canon EOS 80D shooting experience (290 comments in total)

Strange - what were they thinking?

Seems like there is no cohesive design approach in the video area.

Here they add the dual pixel on chip PDAF that should be great for video. Then they leave out the "... several video making tools that seem to be par for the course when it comes to other manufacturers, are absent in the 80D, specifically: Focus peaking, zebra stripes and a clean-HDMI out option. There is also no C-Log gamma option (a very flat tone curve useful for color grading)."

And no 4K.

Guess they don't want to impact the sales of their dedicated video cams.

Link | Posted on Mar 25, 2016 at 17:49 UTC as 26th comment | 5 replies
In reply to:

piratejabez: Decent detail, acceptable noise for such a small sensor, but RAW doesn't appear to be able to add any useful benefit apart from exposure (and ACR doesn't know what to do with the colors). I think it's a great option for casual or traveling JPEG shooters.

Also, totally wrong to say that small sensors benefit more from RAW than large ones. The DR is so low in the 1/2.3" sensors, that the ability to lift shadows is minimal, as is highlight recovery.

Link | Posted on Mar 4, 2016 at 21:21 UTC
In reply to:

piratejabez: Decent detail, acceptable noise for such a small sensor, but RAW doesn't appear to be able to add any useful benefit apart from exposure (and ACR doesn't know what to do with the colors). I think it's a great option for casual or traveling JPEG shooters.

I would not agree it is acceptable. Especially at full zoom , quite bad. Agree the raw can not perform miracles, though it does allow one to easily adjust color balance and optimize nr to some degree.

Link | Posted on Mar 4, 2016 at 21:18 UTC
In reply to:

BJN: Carbon fiber is also better at vibration damping than aluminum, in case you need another reason to sell that arm and leg.

This is just not true.

Link | Posted on Jan 30, 2016 at 19:00 UTC
On article Here at last: Nikon announces D500 (1175 comments in total)
In reply to:

FBoneOne: I think the technical term here is "holly crap" - the wildlife shooter's wet dream comes true (unless you can afford the D5 ). I can see this puppy and a 200/500 as the "does 99% right" combo for wildlife. I will give it 9 months to let the usual Nikon QA issues resolve themselves and next Christmas I am all in :-)

The D7200 may better for wildlife as it does have more pixels, giving greater reach. We will have to see how the D500 sensor compares with respect to noise. D7200 is roughly half the cost, so FF shooters who need the crop factor for their telephotos might prefer it.

Link | Posted on Jan 6, 2016 at 02:15 UTC
In reply to:

chromnd: Can someone explain me, what "AF-P" exactly stands for?

Hopefully for PDAF - if they add this to the sensor chip.

Link | Posted on Jan 5, 2016 at 18:20 UTC
On article Inching forward? Canon PowerShot G5 X review posted (402 comments in total)
In reply to:

haiiyaa: Seems like a great camera that's really fun to shoot with which is the most important thing. The constant menu diving with the rx100's really isn't a enjoyable experience. The Panasonic lx100 is better in that aspect, and I having used the canon m3 for a couple of days I have no doubts the canon g5x is much better at that also. That said, 1.2 raw fps is very poor and so is the battery life.

I agree with Rishi that the issue with Sony should improve onthe user interface is " (1) adding a 'My Menu' and (2) by allowing more features to be assigned to Fn menus and buttons, and (3) actually organized menus." Even so, I prefer the Sony interface allowing greater control than the Canon.

Link | Posted on Dec 15, 2015 at 17:03 UTC
On article Inching forward? Canon PowerShot G5 X review posted (402 comments in total)

I disagree that Sony menus are worse than Canon - at least on non - DSL cameras. Have not tried the G5X but have the G3X, as well as an RX100M3.
Canon is frustrating on the things they leave out and the lack of customization. Sony almost has TOO many options: their problem is more of having an almost random ordering of items. Function Assignment on the Canon is much more limited than the Custom Key settings on the Sony. The function menu on the Sony can be changed - can't do that on the Canon.

Another thing missing from the Canons is Zebra - very useful for setting exposure to avoid highlight clipping.

Link | Posted on Dec 15, 2015 at 16:50 UTC as 73rd comment | 1 reply
On article 4K video: What you need to know (286 comments in total)
In reply to:

Att Slangas: I miss some aspects of current 4K limitations in this article:

1. Limited Framerate: I always shoot 1080@60fps. I have trouble shooting hand held in 30 fps or lower without getting unbearably strobing videos. To get smooth output in low framerate (30fps or lower) you need to pan around very very slowly and keep the exposure time at around1/60s. In 60fps I don't get particularly annoyed even if I shoot at 1/1000s. Which leads to:

2. You need to decide, when shooting video to extract stills, if you want to use the output as stills (then use fast shutter times and get stroby video) or as video (1/60 or 1/50 s)

3. What is the dynamic range of the 4K output? What are the compression artifacts in a 4K video.

Would be interesting to see some side by side comparisons of these aspects.

Agree... 4K/30fps is definitely choppy for fast motion, though improved if you use slower shutter (1/60). Also, the combination of higher def and low frame rate make hand-held shooting difficult for still scenes (you get a jiggley image), even with lens stabilization. A tripod works a lot better.

Link | Posted on Nov 19, 2015 at 22:30 UTC
On article RX aeternus? Sony Cyber-shot DSC-RX10 II review (271 comments in total)

The studio comparison looks a bit out of focus in the center. The RX10 sample looks better than the RX10m2.

Link | Posted on Oct 14, 2015 at 06:31 UTC as 77th comment | 1 reply
On article BSI Boss? Sony Alpha 7R II added to studio scene (514 comments in total)

It appears that the A7RII has slightly lower noise than the D810 in RAW at high ISO. OTOH, at low ISO, the D810 looks a bit sharper than the Sony.

Link | Posted on Sep 2, 2015 at 19:45 UTC as 14th comment | 5 replies

As is pointed out in the article, the stage 2 compression (a run length encoding process) is the one to create artifacts near high contrast edges. This is the part the worries me the most - it might well interact with USM and cause issues similar to Jpeg near edges (i.e. "mosquitos").

I think Sony sticks to compression mostly out of stubbornness and the need to save face. There is no excuse NOT to give the user the option of uncompressed RAW on any camera that offers RAW. Other than larger file sizes (and maybe slower writing). Let the user decide what they prefer. Sony could still offer compression as an option, like Nikon.

As to Sony not doing firmware updates, they do sometimes (like the improved CODEC in the RX10m1). Certainly anyone with A7xxx should complain to Sonny support asking for them to do an update.

I believe that DPR, by escalating attention to the issue, has done us a service and perhaps will get Sony to act.

Link | Posted on Sep 2, 2015 at 19:34 UTC as 244th comment | 2 replies
In reply to:

Jabs767: Great shot with a very minor point.

Why is it that a lot of non-aviation specialist photographers shoot prop-driven aircraft at too high shutter speed thereby freezing that beautiful blur of a prop with a contrasting coloured tip that would otherwise describe a beautiful coloured arc?

Having a frozen prop detracts from what otherwise would have been a FANTASTIC shot. Sorry!

And what shutter speed would you suggest to get that, without otherwise getting too much motion blur?

Link | Posted on Aug 3, 2015 at 07:30 UTC
On article UPDATED: Canon PowerShot G3 X real-world samples posted (166 comments in total)
In reply to:

nicoboston: For less than 400 USD, we can get the tiny EOS 100D body, which can be used with dozens of amazing lenses and generates infinitely better images that this pixel jello.
Whatever the brand, all these "premium compact cameras" are just a joke IMO. They are not small, not versatile, not cheap, not convenient, very slow, and generates files that are technically put to shame by any entry level DSLR, as well as a growing number of smartphones.
Save your money and have fun with a good camera! Take time to study what you can get for... $999.

Show me any smart phone image of equivalent quality.

Link | Posted on Jul 22, 2015 at 18:02 UTC
In reply to:

Claude Ganter: Interesting article. Thanks!

However it would have been worth mentioning that the higher resolution images from New Horizons spacecraft are actually coming from another camera called LORRI, working in black and white.

As for RALPH you get multispectral color information but the resolution is in fact much lower.

LORRI is a 1K X 1K CCD array (13mm wide). RALPH is 5KX32 TDI CCD (65mm wide). The focal lengths are 2630mm and 657mm respectively. It would seem that the spatial resolution is about the same. RALPH operates in a scanning mode and is used during close in flyby. LORRI is a frame capture and used for observations at greater distances.

Link | Posted on Jul 21, 2015 at 18:16 UTC
In reply to:

CameraLabTester: Impressive output for a 9.5 year old imaging device.


If this were launched today, I reckon that the same sort of camera would be used (TDI/CCD) as it is well suited to this application.

Link | Posted on Jul 21, 2015 at 17:36 UTC
On article Panasonic Lumix DMC-G7 Review (493 comments in total)
In reply to:

olypan: Remember the weeks of hype over the Canon 750/760D. We had pre previews, hands on, preview, review, post review, Canon littering the top of the news page day after day. DPR are dropping the G7 like a bad smell.
Oh I'm imagining all this of course?

The RAW still image quality of the canons is distinctly better than the G7 in the DPR studio scene. Even more so at higher ISO.

So it depends on how much you value such characteristics.

Link | Posted on Jul 9, 2015 at 18:10 UTC
Total: 46, showing: 1 – 20
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