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On Sigma updates USB dock for new lenses article (20 comments in total)

I'm still not sure how focus adjustments are made in the lens firmware/rom data. Focus is achieved with a feedback loop via the phase detect sensor and/or contrast detect.

camera: *samples focus point(s)*
camera: Lens! Advance focus by -this- much
lens: ok, done
camera: *samples focus point(s)*
camera: err, you didn't quiet get there, shift focus by this small amount
lens: ok, done
camera: good enough
camera: *releases shutter*

Is the whole point of micro adjustments in lens firmware/rom intended to get the first focus movement to be more correct with less fine adjustments after that?

Why was this even an issue back in the day of non electronic 'dumb' geared lenses?

The lens doesn't know its in focus, only the camera does., even with the fanciest electronic lenses.

Direct link | Posted on Oct 14, 2014 at 20:31 UTC as 1st comment | 1 reply
On Tiny fps1000 high-speed camera boasts 18,500fps article (137 comments in total)
In reply to:

Jim Evidon: Back in the good old days of rocket research, we used to rely on a high fps rate camera called a GSAP to study rocket engine firings. It's total running time was a matter of seconds. It cost a fortune then.

Now there may be one for less than $700? What possible use can an amateur
photographer have for such a device once he has taken a picture of a hummingbird in flight or a bullet shattering a light bulb? It's a marvelous achievement in price vs. performance, but it's long term use to the average photographer will be in bragging rights only.

Someone said he'd pick one up in a heart beat. And do what with it? Do you have any idea how quickly it will fill a 32GB card at 18.500 fps @ 2560 x 2048 pixels per image? I would imagine we are talking in terms of seconds.

It has a profound scientific future and I cheer for the inventor, but aside from that who in amateur photography needs it? Who will want one is another matter.

This is what's always said before a new product comes to the consumer market.

Direct link | Posted on Oct 10, 2014 at 18:49 UTC
On DxOMark Mobile report: Apple iPhone 6 Plus post (35 comments in total)

Where's raw mode apple?

Direct link | Posted on Sep 26, 2014 at 15:38 UTC as 6th comment | 3 replies

DPR community: 2009
"Its impossible to design stabilization into wide fast zooms"

Reality: 2014

Direct link | Posted on Sep 15, 2014 at 21:53 UTC as 8th comment | 1 reply

How does this account for shutter lag?

Direct link | Posted on Sep 10, 2014 at 16:59 UTC as 1st comment

No raw? Booooo.

Direct link | Posted on Sep 10, 2014 at 16:54 UTC as 17th comment | 2 replies
On Zeiss introduces 'no distortion' Otus 1.4/85mm article (338 comments in total)

Perfect lenses are really boring. Maybe for scientific work.

Direct link | Posted on Sep 9, 2014 at 05:06 UTC as 88th comment

Ha. These are just using the QD(quick disconnect) system for rifles.

Direct link | Posted on Sep 6, 2014 at 18:21 UTC as 34th comment

The GH series really needs to be able to record 422 10bit or better internally by now. Sony is behind here but still they should be able to as well.

Direct link | Posted on Sep 4, 2014 at 16:32 UTC as 35th comment | 1 reply

So its been over 8 months since this article. Assuming they started work before this article was written, it doesn't take that long to add what is essentially a 'basic' feature as it doesn't require any post processing. Where is this?

Direct link | Posted on Jul 13, 2014 at 17:20 UTC as 4th comment
On Nikon D810 Preview preview (1600 comments in total)

'Flat' video color is a step forward but for this class of camera you really need 10-14bit linear color(raw or whatever) video.

Direct link | Posted on Jun 30, 2014 at 08:30 UTC as 220th comment
On In Photos: Iceland captured in infrared article (70 comments in total)

A bit heavy on the grads there.

Direct link | Posted on Jun 8, 2014 at 18:41 UTC as 8th comment

Wheres raw??? Come on Apple.

Direct link | Posted on Jun 3, 2014 at 21:06 UTC as 4th comment
On Leica M Monochrom now available in grayscale (sort of) article (137 comments in total)

No CFA is great but its just too expensive. I'd be all over a $3000< Sony A series B&W camera. Both a high sensitivity 12MP version and high resolution 36MP+ version.

Direct link | Posted on May 26, 2014 at 23:57 UTC as 18th comment
On Samsung NX30 Review preview (421 comments in total)
In reply to:

ArcaSwiss: I once bought a Samdung (sic) Blu Ray player. It failed quickly. I sent for repair and when it came back it still didn't work

Never again Samdung for me.

I had a bad experience with a Sony camera so I'm not going to but a PS4.

Direct link | Posted on May 23, 2014 at 03:29 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2962 comments in total)
In reply to:

Lederhosen: Again with the complaints about the clickless wheel? Get over it, DPR. Some people like it, others don't. Your obsession with it is blinkered, subjective, and completely out of proportion. "The wheel does not click, therefore I cannot love this camera!" Please.

Actually the clickless wheel is annoying. I can understand if its primary use was to control a step-less function like zoom or focus but it has to do it well. Otherwise it makes no sense for step settings which is pretty much everything else on the camera it could be bound to.

IMO I've never seen a good electronic control for focus or zoom so it begs the question why?

Direct link | Posted on May 19, 2014 at 17:01 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2962 comments in total)

Re: Touch screens

People need to realize that just having a touch screen does not a good UI make. Apple and Google spend lots of money and time developing their touchscreen SOFTWARE. If you just put the hardware in the camera and let a UI programmer out of school work on it for a week you'll get what most touch screen cameras have which is junk.

For a really good and unobtrusive touch UI you need:


I think camera companies can maybe scrounge really hard to get 2 of those but I definitely don't think they can hit all 3.

Direct link | Posted on May 19, 2014 at 15:41 UTC as 462nd comment | 5 replies
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2962 comments in total)
In reply to:

Jay Jervey: What is the story on this caveat from the press release page?

"An SDXC memory card with a Class 10 or higher speed rating is required for XAVC S recording."

So you need >64GB extended FAT format for 50 Mbps video? Why? What does that have to do with it? I think they mean you need a UHS-I Speed Class 3 card like the new ones from Kingston that are targeted at 4K video. But they come in 16 & 32GB SDHC as well as 64GB SDXC. So why SDXC only? I can't read SDXC with my laptop SD slot.

I doubt that you -need- SDXC. Its not like these press statements and spec pages are all that well edited.

Besides, no one will care that your old laptop can't read SDXC anyway.

Direct link | Posted on May 19, 2014 at 15:33 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2962 comments in total)
In reply to:

martinj68: it's a shame that the zoom range is even less that the first two models.
short zoom was the main reason i didn't buy the mk1 and 2.

Also why is Sony so reluctant to add touch screen to their cameras?

Joking right? A longer-slower lens and a touchscreen are not what the primary customer base wants in this camera.

Direct link | Posted on May 19, 2014 at 00:28 UTC

"You can't put an internal EVF into the RX100 class of camera. Its just not possible." Oh wai...

Direct link | Posted on May 16, 2014 at 17:22 UTC as 17th comment
Total: 332, showing: 1 – 20
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