Lee Jay

Lee Jay

Lives in United States CO, United States
Works as a Electrical Engineer / Wind Energy Research
Joined on Oct 17, 2003

Comments

Total: 349, showing: 41 – 60
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On 5 photography apps to download to your new iPad post (157 comments in total)
In reply to:

Lee Jay: "5 must-have iPad apps for every photographer"

I'm a photographer. I don't have an iPad, or any other Apple products of any sort. In fact I don't have a tablet of any sort either. Getting a decent smartphone got rid of any interest I had in a tablet.

Guess it's not for every photographer, huh?

It said "for every photographer" not "for every photographer that has an iPad".

Direct link | Posted on Nov 4, 2013 at 01:10 UTC
On 5 photography apps to download to your new iPad post (157 comments in total)
In reply to:

aeschylus: If you've a desktop computer and conventional screen I struggle to see the point of manipulating images on any tablet. Better to use the former and then transfer them.

Only Apple laptops are $2k. My most recent quad core Ivy Bridge full HD 15 inch Dell was $699. It's only about 100 times more powerful than an iPad and came with a terabyte of storage too.

Direct link | Posted on Nov 3, 2013 at 13:56 UTC
On 5 photography apps to download to your new iPad post (157 comments in total)

"5 must-have iPad apps for every photographer"

I'm a photographer. I don't have an iPad, or any other Apple products of any sort. In fact I don't have a tablet of any sort either. Getting a decent smartphone got rid of any interest I had in a tablet.

Guess it's not for every photographer, huh?

Direct link | Posted on Nov 3, 2013 at 13:53 UTC as 49th comment | 8 replies
On Canon PowerShot S120 real-world samples news story (66 comments in total)

After looking at these samples and the samples from other sites, I'm more and more convinced that DPReview's copy has a decentered lens. None of the other samples I found on other sites have the same non-uniform sharpness or the large amount of axial chromatic aberration that these samples display.

Direct link | Posted on Oct 22, 2013 at 17:34 UTC as 10th comment

So what does it look like? The picture seems to be just a placeholder as it looks as though it is a graphic created in seconds by an engineer with no artistic talent whatsoever. It's a white and gray box. That can't be it, can it?

Direct link | Posted on Oct 9, 2013 at 01:09 UTC as 180th comment
On Canon PowerShot S120 real-world samples news story (66 comments in total)
In reply to:

ThaQuest: don't know why i would get this when i could get the eos M + 22 f2 for less money...and still stuck with an S100.

How about so you aren't stuck at 35mm equivalent all the time, and how about so you have something that's thin and pocketable?

Direct link | Posted on Oct 7, 2013 at 14:50 UTC
On Canon PowerShot S120 real-world samples news story (66 comments in total)
In reply to:

SHood: For a camera model that has changed so little from the previous version, I am surprised dpreview is spending time on it.

New lens, new processor. That's hardly a small change.

Direct link | Posted on Oct 7, 2013 at 13:01 UTC
On Canon PowerShot S120 real-world samples news story (66 comments in total)

Looks to me like the lens is decentered. I've had lenses that looked like that before and they were repaired or replaced. If this is the lens performance of the actual in-spec article, that's not good at all.

Direct link | Posted on Oct 7, 2013 at 13:00 UTC as 32nd comment
On Editorial: Why I can't stop taking iPhone Panoramas article (300 comments in total)

The theater shot is exceptionally noisy and lacking in detail and saturation.

All the panoramas suffer from not having enough vertical field of view.

Not being able to control the final projection used for the finished panorama would be a show-stopper for me.

What about multi-row or vertical panoramas? I probably do more of these than any flavor of single-row.

Every one of the examples suffers from one or more of these deficiencies, not to mention the stitching errors mentioned above.

Direct link | Posted on Sep 24, 2013 at 20:51 UTC as 68th comment | 12 replies
On How many megapixels do you need? post (220 comments in total)

Whoever wrote this article knows nothing about digital sensors or where noise comes from:

"Then there’s the thorny issue of sensor noise. This is caused by inaccuracies in the measurements for each pixel, and it takes the form of a speckled graininess across the image." Uh...no. Most of the noise is in the light itself, even if it were measured perfectly.

"If you doubled the number of megapixels on a camera’s sensor, you’d halve the amount of light that each pixel would have to measure, which means even more noise." Even worse. This is just flat out false and perpetuates a long-held myth that DPReview helped to start and to perpetuate. In fact, more pixels in the same size usually leads to less noise not more, for various reasons.

Direct link | Posted on Sep 22, 2013 at 02:10 UTC as 21st comment | 9 replies

You'll get better pictures if you put a piece of electrical tape over the lens of your iPhone. I'm serious.

Direct link | Posted on Sep 11, 2013 at 04:05 UTC as 83rd comment

I'm not sorry I never joined Facebook, and I don't plan to join anytime in the future.

Direct link | Posted on Sep 8, 2013 at 16:45 UTC as 40th comment | 1 reply
On Panasonic GX7 First Impressions Review article (1202 comments in total)

I suggest you go back and shoot a few very old models as well, such as the D70, 10D, and 5D, so we have some history as well as recent models.

Direct link | Posted on Aug 15, 2013 at 01:31 UTC as 183rd comment | 1 reply
On 5 Reasons why I haven't used my DSLR for months article (590 comments in total)
In reply to:

PerL: 1. No question - DSLRs are still the way to go for best results.
2. If you dont want to make any effort, I guess it is time for another hobby.
3. There have always been simpler, more portable, easier cameras to use, but always as a complement to the real stuff, and everybody knew it.
4. When convinience is king - the end of photography as an art is near.

"The iPhone is to photography as the MP3 is to music."

Ubiquitous and crappy? I agree. Except the gap is much wider between an iPhone and a camera an an MP3 and a decent source.

Direct link | Posted on Jul 31, 2013 at 21:16 UTC
On 5 Reasons why I haven't used my DSLR for months article (590 comments in total)

So, the main reason is, because you don't shoot a lot of shots in difficult conditions, like the Spitfire shot. Fine for you. I shoot about 80% of my shots in conditions in which none of the cameras mentioned would have any chance of getting the shot.

Direct link | Posted on Jul 31, 2013 at 21:15 UTC as 206th comment | 2 replies
On Just posted: Our Canon EOS 70D hands-on preview news story (359 comments in total)
In reply to:

DenWil: I will be interested to see if a FF sensor with the same pixel density is forthcoming.

You do count the Bayer pattern, and you do count the AA filter. You need 2 pixels to get one line pair even at the Nyquist, somewhere between 2 and 3 if you have an AA filter and a Bayer pattern. I used 3. You can never use 1, as you claim.

Direct link | Posted on Jul 3, 2013 at 13:59 UTC
On Just posted: Our Canon EOS 70D hands-on preview news story (359 comments in total)
In reply to:

DenWil: I will be interested to see if a FF sensor with the same pixel density is forthcoming.

And the diffraction cutoff:

http://en.wikipedia.org/wiki/Spatial_cutoff_frequency

for this sensor is, wait for it.....

22.5mm/5472 pixels = 0.00411 mm/pixel

Needing 3 pixels per cycle (because of the Bayer pattern and the AA filter), that gives:

1/(3*0.00411) = 81.1 lp/mm for the sensor

1/(0.000550um*81.1 lp/mm)

f/22.4!

Even if you use the Rayleigh limit instead of the cutoff, you still get around f/20. Yeah...I'm really scared of that. My highest resolution lens is sharpest at f/6.3 which means this sensor is way, way undersampling my lens.

Direct link | Posted on Jul 2, 2013 at 17:49 UTC
On Just posted: Our Canon EOS 70D hands-on preview news story (359 comments in total)
In reply to:

Lee Jay: Canon has brought back digital video zoom (3x-10x version). Yes!!!

They should never have gotten rid of it, and they should expand it.

http://youtu.be/RUMPxIxi8zo?t=4m56s

Direct link | Posted on Jul 2, 2013 at 14:27 UTC
On Just posted: Our Canon EOS 70D hands-on preview news story (359 comments in total)

Canon has brought back digital video zoom (3x-10x version). Yes!!!

They should never have gotten rid of it, and they should expand it.

Direct link | Posted on Jul 2, 2013 at 14:14 UTC as 62nd comment | 1 reply
On Just posted: Our Canon EOS 70D hands-on preview news story (359 comments in total)
In reply to:

Jefftan: "The big unknown right now is image quality - the 70D uses a 20.2MP sensor but the image is formed from 40.3M photodiodes, which is a lot to fit onto an APS-C chip."

not just noise, what about diffraction

So, you always print or display according to the pixel count in the frame? Odd....you're the only person I know of that does that.

Direct link | Posted on Jul 2, 2013 at 13:31 UTC
Total: 349, showing: 41 – 60
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