Lives in United States United States
Works as a Physician
Joined on Aug 30, 2004


Total: 25, showing: 1 – 20
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On Little beauty: Nordin Seruyan's macro images article (352 comments in total)
In reply to:

edwinvs: If you're interested in Mr. Seruyan's technique you should have a look at these two pictures on his 500px gallery:

Both show exactly the same seed, but with a different background and with the snail clinging to it in a different position. Obviously this is the result of compositing in Photoshop; it has very little to do with macrophotography.

You are 100% correct. He is skillful at digital photo compositing and image manipulation.

Having said that, his photo art are at times magnificent.

Direct link | Posted on May 13, 2014 at 22:58 UTC
On Sigma USB Dock quick review article (142 comments in total)
In reply to:

The Photo Ninja: If I buy a lens, it better work without me having to buy a dock to fix it.

Yeah good luck with that one. There are a lot of variances from copy to copy and the fact that Sigma provides a way to tweak the performance and parameters of the lens is a BIG PLUS.

Direct link | Posted on Aug 12, 2013 at 23:04 UTC
In reply to:

BruceBorowski: No one is closed minded to new techniques just apples propaganda.............

I would not put anything beneath an apple that has fallen off its tree!

Direct link | Posted on Feb 8, 2013 at 04:08 UTC
In reply to:

M Jesper: Is this prototype meant to be reality any time soon ? Because if it does i must remember to win the lottery asap.

I saw 4K displays on sale for approx $22,000 USD (for a 65" LG model, on a recent trip to Seoul). Let's say that is 20 times more expensive than a 1080p display...then you REALLY have to win the lottery (or be filthy rich) to afford a $440,000 USD 8K display!

Direct link | Posted on Jan 12, 2013 at 10:59 UTC
On Yana in the Blondes Portrait challenge (4 comments in total)
In reply to:

stanginit: Really nice. Shot really works. Would like to know what she is doing with her hands. ;)

She is holding a handgun and it's about to be pointed at YOU! lol

Direct link | Posted on Nov 27, 2012 at 03:58 UTC
In reply to:

ZAnton: As usual insane pricing: Price of the 18-55 STM > Canon 18-55 IS mkII + Mount adapter.

Remember that the fit, finish, and quality of the materials play into the pricing, and from the looks of it, the STM has a metal mount and far better fit/finish.

Direct link | Posted on Jul 23, 2012 at 14:13 UTC

They are going about it the wrong way. I would prefer they take a simpler approach: gouge out a human eyeball (or perhaps an "eagle eye"), wire it up digitally, done...they can call it the DARPA's ALIVE-2 camera...maybe in a few years...just have to figure out how to keep the organic parts metabolizing...and the whole system would only require 5mW of power instead of 430W. I would donate an eyeball or two but mine have been experimented on long time ago.

Direct link | Posted on Jun 23, 2012 at 05:28 UTC as 44th comment
On The One-Light Studio article (94 comments in total)
In reply to:

Zafar Kazmi: Sorry to say, but these images are not impressive at all.

...and you are missing the point of this article. It's not to show off impressive images. The images are there to distinctly illustrate the effects of on vs off axis lighting, single source.

Direct link | Posted on May 24, 2012 at 04:54 UTC

Sounds exciting....but sadly it also sounds very expensive...

Direct link | Posted on May 2, 2012 at 08:53 UTC as 12th comment
On Facebook buys photo sharing service Instagram for $1bn article (144 comments in total)
In reply to:

Tape5: People please stop having kids...And if you do, please don't give them so much pocket money.

Don't buy them so many phones and ipads with the hope that they will not reject you when they grow up.

Soon all we are going to be left with is big business chasing each other down the idiot trail for the last penny middle class parents have shoved into their kids' pockets.

Please. Take your mindless blathering somewhere else, thank you.

Direct link | Posted on Apr 10, 2012 at 10:38 UTC
On BK6A0180 photo in dpreview review samples's photo gallery (2 comments in total)

Compared to the RAW version, this JPEG version really struggles to retain details! Especially true in the shadows of the distant trees, and the tree bark of the foreground trees

Direct link | Posted on Mar 24, 2012 at 12:18 UTC as 1st comment

Wow...the JPG loss of fine detail is frighteningly stark compared to the RAW conversions (see the forest/tree scenes). This is a strictly RAW only least coupled with the 24-105.

Direct link | Posted on Mar 24, 2012 at 12:14 UTC as 54th comment | 8 replies
On ISO 102400 (H2) photo in dpreview review samples's photo gallery (14 comments in total)

Likely a limitation in the EXIF due to byte space constraints. (8 bits)

Direct link | Posted on Mar 2, 2012 at 17:27 UTC as 10th comment
On Nikon D4 & D800: What do the Professionals Think? article (391 comments in total)
In reply to:

Deeso: To sum up: These are two great cameras but people also need a true sucesor for the D700. Affordable, moderate resolution, standard DSLR body and high speed.

Shame on you for thinking MP is the only differential between the two cameras.

Direct link | Posted on Feb 23, 2012 at 19:09 UTC
On Fujifilm produces limited edition of 10,000 black X100s article (101 comments in total)
In reply to:

mdava: Surely 10,000 units is not a *limited* edition in any meaningful sense of the word.

How many X100s have been sold in total so far?

Likely the vast majority of buyers seriously contemplating this camera would have already bought one, or will be holding out for the X-Pro1.

Meaning 10,000 units of a "limited" edition may turn out to be 10,000 units too many!

Direct link | Posted on Jan 14, 2012 at 18:48 UTC
On Fujifilm patents hybrid organic/CMOS sensor article (82 comments in total)
In reply to:

whtchocla7e: With all due respect to Dr. Fossum, I tend to ignore his insightful remarks about any new technologies that he is not personally involved with.

All eyes on Fuji and I hope they change the game.

My thoughts exactly.

He's probably a bright fellow, but I found his commentary to be dry and uninsightful, laced with obvious bias.

Direct link | Posted on Dec 21, 2011 at 22:48 UTC
On First Impressions: Using the Nikon V1 article (131 comments in total)

In your AF tracking example, I see you comment on the contribution from the very large DOF...I venture to say that most of the so-called performance can be attributed to the large DOF! Nice try, Nikon.

Direct link | Posted on Oct 25, 2011 at 07:56 UTC as 19th comment
On Lytro Light Field Camera first look with Ren Ng article (225 comments in total)
In reply to:

Najinsky: Just playing with the numbers, the images, and the above soundbites, I'm guessing each ray is getting split to 9 detectors (11 megarays giving 1080 HD could suggest 10 but given the square format I go with 9). This perhaps gives 9 fields of focus, and when you play with the images, you certainly get the feeling of switching between different focus zones rather than smooth refocussing. I guess more zones are possible through interpolation and I suspect that's what the 3D software they are working on is trying to do.

In this current incarnation, the appeal is the playing with the images to reveal hidden subject interactions. It's a high tech toy. At least for now.

Aside from where it might go in the far future, I think this has a lot more potential for video. Both in terms of current resolution and limited IQ (far objects have such small resolution, focus is almost irrelevant) but the ability to pan focus from subject to subject (after shooting) would definitely appeal to film makers.

If you read carefully, implied is a "continuous" ability to move the plane of focus, and when you upload your lightfield image, you are uploading a subset of the data, which implies that you will send information at discrete planes of focus, which is probably why when you play with the available demo images via their flash tool, you only get certain "zones" of focus.

Direct link | Posted on Oct 20, 2011 at 17:13 UTC
On Lytro Light Field Camera first look with Ren Ng article (225 comments in total)
In reply to:

ChrisKramer1: I have a terrible, sneaking suspicion that these are going to catch on. You can never tell...

For posting to social media, an image size of 800x800 would be adequate, and that is probably in the neighborhood of what to expect from this device.

I think what will make or break it for this company will be determined by ultimately the image quality at this limited size.

The novelty of refocusing will wear off very fast. 99% of social snaps have a single plane of focus that is interesting (the plane that the subject resides), and refocusing away from this plane will be rather uninteresting.

Beyond this, the points of interest will be the quality of the final image exported as a jpg, or seen via lytro's flash based viewer, how it compares to a more conventional camera at its price point (in terms of quality), and how usable it is in terms of getting the image published on the intended target site.

Also, one other thing to consider is likely the inability to post process these images in any conventional sense, until tools are developed to handle 'megarays'.

Direct link | Posted on Oct 20, 2011 at 16:56 UTC
On Lytro Light Field Camera first look with Ren Ng article (225 comments in total)
In reply to:

Andrew Roos: I suspect DPR is misinterpreting the "at least HD" statement. 720p is also an HD standard, and I suspect the Lytro camera will have an image resolution of around 960 x 720 (in other words, 720p vertical with a 4:3 aspect ratio) with an array of 4 x 4 pixels under each microlens, giving an 11.06 MP sensor "11 mega rays" in Lytra terms. (I can see four distinct focus zones in the posted Lytro pics, which may be related).

Why do you think this device captures a 4:3 aspect ratio? Everything points to a square ratio.

Direct link | Posted on Oct 20, 2011 at 16:48 UTC
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