Simon Joinson

Simon Joinson

Lives in United States SEATTLE, WA, United States
Works as a Editor, writer, photographer
Has a website at www.dpreview.com
Joined on Jul 9, 2002
About me:

http://www.cff.org/

Comments

Total: 544, showing: 1 – 20
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On What is equivalence and why should I care? article (1830 comments in total)
In reply to:

Jack Fu: Good article. However, the idea about "equivalence of total light" is wrong.

--quote--
And this means that, for the same shutter speed, F-number and ISO, the camera with the largest sensor will have more total light to measure. And, unless the large sensor is significantly worse than the smaller one, it will produce a cleaner, less noisy image. It's likely that the large sensor camera will be bigger, heavier and more expensive, but it should provide cleaner images.
--end of quote--

Let's say I take my Nikon D600 under low light, with same shutter speed, F-number and ISO, I take a picture at FX mode with 50mm 1.4, then I take another picture at DX mode with 35mm 1.4. Do you think the first one is "cleaner, less noisy"? Or, I take two pictures with 35mm 1.4, one in FX mode and one in DX mode, the one I take in FX mode would be "cleaner, less noisy"?

NO!

The key factor here is the density of pixels, and we knew it since long time ago.

In your first example, if you normalize the FX and DX shots (to the same pixel dimensions) then yes, the FX will be fractionally cleaner/less noisy. In your second example you are no longer comparing apples with apples, and to get the same framing in FX mode you would need to move significantly closer to the subject, which would reduce DOF (obviously this is less relevant when shooting at or near infinity). Again, once normalized to the same resolution the FX version would be marginally cleaner.

Direct link | Posted on Jul 10, 2014 at 16:35 UTC
On Panasonic Lumix DMC-FZ1000 First Impressions Review preview (1282 comments in total)
In reply to:

Lab D: Richard, I hope a "not" is missing in the sentence about watching video.
"but it's too shabby at 2560 x 1440"

you can never be *too* shabby

Direct link | Posted on Jul 9, 2014 at 02:23 UTC
On Panasonic Lumix DMC-FZ1000 First Impressions Review preview (1282 comments in total)
In reply to:

Markol: I've been a huge fan of Jeff for many years but the final thoughts he put together destroy much of his reputation IMHO.
While I'm not at all against this camera, an enthusiast would never argue that he doesn't print large anyway so the inferior IQ is ok when going on a once in a lifetime holiday.
But amazon will be happy with the text, that's for sure.

Or maybe, just like somebody who doesn't think he speaks for every 'enthusiast' in the world when stating that he finds certain compromises acceptable when balanced against other, significant advantages (like speed, portability, versatility etc)

Direct link | Posted on Jul 8, 2014 at 23:52 UTC
In reply to:

patcam7122: Did I strike a nerve, Simon? If you look at other comments here you'll see I'm certainly not alone in finding this article was a waste of space.

I didn't even say I didn't agree with you. I simply questioned your ability to make definitive statements on behalf of 'the majority of viewers on this site' (which is millions of people)

Direct link | Posted on Jun 29, 2014 at 17:08 UTC
In reply to:

patcam7122: My God, is DPReview so desperate for material to fill space that it searches the globe for dull, boring nonsense like this? Instead of displaying mediocrity like this why not spend more time and space on something actually useful to the majority of viewers on this site?

I assume patcam7122 was elected to speak for everyone who visits this site when I was out of the office yesterday.

Direct link | Posted on Jun 29, 2014 at 02:14 UTC
In reply to:

foto guy: Who cares? These and other cameras can shoot a decent pic at quite high ISOs. Do you think you folks could focus on something important for a change? Perhaps photography, for instance.

Ever get the feeling you just can't win?

Direct link | Posted on Jun 23, 2014 at 00:32 UTC
In reply to:

lowlightSam: I think you meant to say summer DAYS are long in Seattle!

correct, and corrected; thanks!

Direct link | Posted on Jun 22, 2014 at 17:40 UTC
On Olympus Stylus SP-100EE Real-world Samples article (17 comments in total)
In reply to:

Fogsprig: Yep, the detail in full resolution is more or less typical for superzoom sensor, BUT all you need is downsizing it in RAW.

It doesn't have a raw mode, unfortunately.

Direct link | Posted on Jun 16, 2014 at 14:27 UTC
On 2014 iPhone Photography Awards winners announced article (102 comments in total)
In reply to:

Just another Canon shooter: I can understand the interest in cellphone photography ... but i-only photography competition is an advertising campaign. I hope that dpreview gets paid for posting those pictures.

we do not, of course.

Direct link | Posted on Jun 15, 2014 at 22:53 UTC
In reply to:

Bexter: This site is going downhill with these silly articles and multiple previews.

you do realize this one is more than a little tongue in cheek, right? Not sure what you mean by 'multiple previews'...
And HowaboutRAW: site traffic is important to us, just as it always has been, even when we weren't owned by our parent company. Any commercial website that says it doesn't care about traffic either (1) is lying, (2) doesn't have any, or (3) is behind a paywall (and that's being generous because they care too).

Direct link | Posted on Jun 14, 2014 at 17:32 UTC
In reply to:

CanonKen: You just got some poor SOB fired. Nice going! ;)

i think you're mistaking us for someone important :)

Direct link | Posted on Jun 14, 2014 at 04:40 UTC
In reply to:

DotCom Editor: "...even this component is lovingly crafted from brushed aluminum. It's easy to be cynical, but this kind of attention to detail is exactly why Leica fanatics stick with the company."

This will make my photographs better how, exactly?

are you mad? since i bought a rolex i've never told the time better

Direct link | Posted on Jun 14, 2014 at 03:07 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2979 comments in total)
In reply to:

aerorail: shoot some hard scenes like snow capped mountains on a clear blue sky day with dark foreground rock/trees

would it be ok if we combine the two and shoot the Niger Delta from a spaceship?

Direct link | Posted on Jun 11, 2014 at 00:58 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2979 comments in total)
In reply to:

aerorail: shoot some hard scenes like snow capped mountains on a clear blue sky day with dark foreground rock/trees

it might take a while for us to get there, so for now I would say this: it's hard to see any screen in the bright conditions at the top of a mountain, and most cameras will require some manual intervention to get the exposure/WB right. This is where shooting raw is highly advisable (and the new EVF will help with previewing/reviewing).

Direct link | Posted on Jun 10, 2014 at 16:37 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2979 comments in total)
In reply to:

aerorail: shoot some hard scenes like snow capped mountains on a clear blue sky day with dark foreground rock/trees

Any other requests?

Direct link | Posted on Jun 10, 2014 at 15:45 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2979 comments in total)
In reply to:

shademaster: that is one of the least flattering 70mm equiv portraits I've seen. Was that really at full zoom? Seems very very close to subject for 70mm equiv.

this simply isn't true. Perspective is influenced by subject distance, not focal length (or sensor size).

Direct link | Posted on Jun 9, 2014 at 19:31 UTC
On Flashpoint Budget Studio Monolight Review article (41 comments in total)
In reply to:

Jogger: Interesting that DPR/Amazon is reviewing a competitor's product.

It's almost like we're an independent editorial team making our own decisions....

Direct link | Posted on Jun 6, 2014 at 06:25 UTC
On A GoPro Hero's journey into a dishwasher article (167 comments in total)
In reply to:

Artpt: Agree with another comment that it is certainly a slow news day....

On the other hand, is there a link or email to submit forum member's videos or articles for review?

...we have to believe that there is a chance to be posted against the competition of dishwashing.....

http://www.dpreview.com/feedback

Direct link | Posted on Jun 5, 2014 at 18:05 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2979 comments in total)
In reply to:

moe lem: The lighting in the photos are completely different!!!

Download both images Sony and canon.
The sony one is missing lights , very apparent if you look at the metal paint mixing palette. This is completely biased to the canon G1X2.

This comparison is a joke!!!

the lighting is identical. Any differences you see in that area come from tiny differences in the angle and position of the camera relative to the scene.

Direct link | Posted on Jun 2, 2014 at 02:43 UTC
On Site Update: notifications article (127 comments in total)
In reply to:

fotowbert: My notifications list DOES NOT include the "Stop receiving notifications" function as shown in the last screen grab above. Has "Stop receiving notifications" been removed or is this a bug?

apologies it appears to have broken - we will fix it.
SJ

Direct link | Posted on May 23, 2014 at 03:35 UTC
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