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


Total: 22, showing: 1 – 20
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In reply to:

mgatov: Thank you for posting this. It led to me purchasing the Panasonic LX100... as I was really on the fence between these two cameras.

I agree that the LX100 has some issues compared with the RX100.
I had two samples of the LX100, and both had very poor focus under normal daylight conditions for certain distant subjects (trees!) The EVF on the RX is much nicer - no rainbows, good black level, good optical quality, although a bit of bother to have to pop it up. Sony menu layout is also better.

Direct link | Posted on Jun 26, 2015 at 21:34 UTC
In reply to:

QuarryCat: I have done tests with EOS 5DSR - Sony has a lot to do, to deliver such a good low noise performance and such an incredible sharpness... we will see what reality brings. Canon's ISO 6400 is realistic and even Alpha 7s is at 6400 ISO just 1 1/2 Steps finer at 12 MP compared to 51 MP.
You can use 51 MP at 1600 ISO with best sharpness on the market and very low noise. Even 3200 is realy good and surpasses EOS 5D3 or Nikon D810.
But for now, the EOS 5DSR is the king of the crowd - by far!

I would say that the noise performance of the 5DSR appears, at best, similar at 3200 to the D810 - not better. Dynamic range is another matter. If you are going to lift shadows a lot, the Canon leaves a a lot to be desired. The Sony sensor design is superior.

At higher ISO (12,800) the 5DSR lags other cameras.

Direct link | Posted on Jun 22, 2015 at 15:18 UTC
On Canon PowerShot G3 X: What you need to know article (565 comments in total)

It appears as the low end compact camera is taken over by smart phones, that the manufacturers see premium compact (RX100, LX100, G7X) and bridge cameras (RX10, Lx1000, G3X) as the place to make money - fewer units but a higher ASP. I wonder what the profit margin is on such cameras?

Direct link | Posted on Jun 18, 2015 at 22:51 UTC as 55th comment | 1 reply
In reply to:

mosc: I really don't get this type of product at all. It's nothing against Think Tank Photo's particular offerings here and I'm sure they make other products that I would prefer but I really just don't get this offering.

These are not sturdy enough to protect a 70-200 in the overhead bin of an airplane let alone checked baggage. These are not sturdy enough to put in the luggage area of a greyhound bus (with somebody famous's name on the side). These are bizzare to think about as camera-only backpacks on a hiking trip compared to a more general purpose bag. They certainly don't offer any type of holster-like ease of access middle ground either.

Anybody want to explain why I'm crazy?

Looks like a reasonable backpack (the 10) for short hikes where 3 lenses would be enough. Provides better organization and padding than a normal backpack used to carry camera gear. I don't know if well padded enough to be tossed in checked luggage, but should be OK in an overhead bin. Like that includes a rain cover. Seems like it should have a water bottle pocket holder though, and I am not sure that the side zippers are necessary.

Direct link | Posted on Jun 16, 2015 at 20:16 UTC

It appears that the active area, number, and pitch of the pixels remains the same as before. The peripheral circuitry that previously sat around the pixel array is moved underneath it on a separate layer. The big advantage lies in the fact that the fabrication processes for the photo sensor and the logic layer can be individually optimized. This probably results in the ability to run the logic at much faster speeds (hence the ability to do much higher frame rates as well as 4K). I might have a concern about possible thermal issues, as the underlying circuitry might heat the sensor array unevenly. OTOH, charge injection from the logic could not influence the photosites.

It is really quite an amazing technology, actually bonding two chips on top one another and interconnecting them - all with acceptable yield for a consumer device and the potential noise sensitivity for photosensors.

Direct link | Posted on Jun 11, 2015 at 18:53 UTC as 11th comment | 1 reply

I love your prose (you must be from the UK). Yanks seem to have lost the knack.

Direct link | Posted on Jun 2, 2015 at 19:15 UTC as 150th comment | 1 reply
On Dan-08_ISO-200_24mm photo in dpreview review samples's photo gallery (6 comments in total)

Probably looks ok on a camera-sized screen. Full size on a monitor, excessive NR. Especially noticeable on the tree's foliage. Disappointing that there is no RAW, and I don't think that there is user control on NR level in camera. My LX3/5/7 took much better photos at wide angle.

On long telephoto, the fact that you get such extreme zoom is the only redeeming feature, and might be useful for wildlife photos - if in full sun.

Nikon is strange. Must be completely separate engineering groups - the DSLR and the Compact groups. They must never look at each other's photos.

Direct link | Posted on May 16, 2015 at 18:50 UTC as 1st comment
In reply to:

KShape: 28-300mm constant F2.8?! I need a lens like that!!!

Id rather have a 24-200 f2.8!

Direct link | Posted on Apr 13, 2015 at 06:32 UTC

Does not look too great at f2.8 (sample 15) in the corners.

Direct link | Posted on Feb 14, 2015 at 03:21 UTC as 11th comment
On Sigma24mmF1.4_samples-15-F2.8 photo in dpreview review samples's photo gallery (1 comment in total)

The sample 15 (f2.8) shows pretty poor corner sharpness. I was hoping for better.

Direct link | Posted on Feb 14, 2015 at 03:19 UTC as 1st comment

Hopefully, Nikon will cover the shipping for the camera (both ways). I should not be out $40.

Direct link | Posted on Jan 9, 2015 at 16:44 UTC as 43rd comment | 1 reply
On Nikon D750 Review preview (1929 comments in total)
In reply to:

nizar ghosn: how could you justify the better iso performance in the d610 in your comparison line on this page, despite the comparison chart shows that the d750 is better .. and why you have the handling of the d610 is better than the d750 in this page ??? is it ???

Agree. The comparison (conclusion page) does not reflect the studio comparison images at ISO 25000, especially in dim (incandescent) lighting. The D750 has less of the blue channel speckling than the others. The D750 is certainly NOT worse.

As far a handling goes, I don't see what would make it any worse than a D610.

Direct link | Posted on Dec 21, 2014 at 19:43 UTC
On Panasonic Lumix DMC-LX100 First Impressions Review preview (1864 comments in total)
In reply to:

Artistico: If image quality is on par with the specifications, this is going to be an amazing little camera. I'd also be interested to see whether lowering the megapixels from the MFT "standard" of 16 will affect noise and dynamic range. Makes me tempted to trade in my GM1 and get this one. It hinges a bit on image quality too, of course.

The noise (when printing or viewing full screen) is determined by the overall sensor size, not the resolution. It is a big disappointment that Panasonic only has 12 MP, when the RX100-3 has 20 MP in a smaller sensor. That 20 MP is also USEFUL resolution at base iso - nice for cropping and large prints. Not sure what sensor tech they are using - maybe not as advanced as Sony BSI. The dynamic range of theLX100 remains to be seen but may inferior.

Direct link | Posted on Sep 23, 2014 at 15:34 UTC
On Canon PowerShot G7 X First Impressions Review preview (947 comments in total)
In reply to:

Sviz: It looks like the range and speed of this lens comes at a price. Optical quality not in the same league as RX100M3.

Actually, the wide angle don't really look much worse than my RX10, at similar settings.

Direct link | Posted on Sep 19, 2014 at 16:04 UTC
On Nikon D4s First Impressions Review preview (1042 comments in total)
In reply to:

Vamp898: Is everyone of you really not able to read?

"JPEG Tone Curves / Dynamic Range"

They are testing the Dynamic Range of the JPEG and so in fact testing the JPEG Engine.

They are testing the JPEG Software on the Firmware of the Camera.

This test have absolutely nothing to do with the Dynamic Range of the sensor.

So the D4s have worse JPEG Engine than the OMD-EM1 have, that _doesnt_ mean the D4s have less Dynamic Range at all!

But it should be mentioned that the Toshiba Sensors in Nikon Cameras have less DR than the Sony Sensors have, thats why the D800 have more DR than the D4(s), even if it produces more noise.

Actually, the D800 is better below Iso 800. And the difference above is not vast - 1 stop at 6400. See DXO.

Direct link | Posted on May 13, 2014 at 08:17 UTC
In reply to:

davids8560: Would you guys say a Sony RX10 or an Olympus Stylus 1 or a Panasonic FZ200 can deliver comparable or even perhaps superior quality to a typical consumer DSLr equipped with this Tamron lens?

I expect that the RX10 will probably have better corners and edge, Just keep the ISO at half of a DX camera.

Direct link | Posted on Feb 7, 2014 at 00:41 UTC

Almost exactly the same weight as the Nikon 16-85 vr (F3.5-5.6). The nikon is probably the best DX zoom that covers 16mm. So, either Tamron has pulled off quite an accomplishment, or has made a piece of rubbish (worthless at its extremes).

Direct link | Posted on Feb 7, 2014 at 00:39 UTC as 23rd comment

And these are the "good" photos! Hate to see the rest.

Lack of talent + crappy equipment + poor PP = rubbish.

Direct link | Posted on Feb 2, 2014 at 17:01 UTC as 7th comment
On Just deployed: New forums system article (699 comments in total)

1) I also miss the color change on previously clicked links, which makes it hard to know if you already looked at a post.

2) Also, when you reply to a post, it would be nice to still be able to see that post directly below the edit window rather than having to scroll a long ways down (made harder by the problem #1 noted above).

3) I also agree that one should not really have to read a manual to do basic stuff - other wise it is an indication of a poor design.

4) Too much wasted screen space on the thread view.

5) It would have been better to release this as a beta test, while keeping the old forum in place. Then use user comments to perfect the final release.

Direct link | Posted on Oct 4, 2012 at 23:08 UTC as 126th comment | 1 reply
On Just Posted: Sony Cyber-shot DSC-RX100 review article (373 comments in total)

The idea of a $600 camera in your jeans pocket is pretty dumb - unless you have too much money. The life span under such conditions is probably pretty low (be sure to get an extended warranty covering accidental damage!) I always use a case, even for small cameras.

They compromised so much usability to get a small footprint is rather disappointing. A LX7 with a similar sensor would be a killer.

Those who think that no viewfinder is no big deal, don't shoot outdoors in bright sunlight. The lack of decent macro, crippled (28mm vs 24mm) wide angle, no provision for filters (e.g. polarizers), limits this for serious outdoor photographers. The loose control wheel sounds like a real bother. Cab you can really operate this camera with gloves on.

Maybe the target market is DINKs taking snaps of their friends in dark restaurants.

Hopefully a more usable version will follow.

Direct link | Posted on Aug 29, 2012 at 14:49 UTC as 46th comment | 4 replies
Total: 22, showing: 1 – 20
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