LensBeginner

LensBeginner

Lives in Afghanistan Afghanistan
Joined on Jan 23, 2012

Comments

Total: 353, showing: 21 – 40
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On What is equivalence and why should I care? article (2001 comments in total)
In reply to:

LensBeginner: Great article, I will surely read it more than once... :-)

a question:
which lens/aperture combination do you have to use, say, on FF and m43, in order to get the same circle of confusion on the two sensors and a different DoF (more DoF on FF due to enlargement) when bringing both pictures to the same viewing size (paper, screen), the subject taking up the same part of the print/screen?

The same size of the circle of confusion on the sensors, so you actually get less DoF on the smaller format due to enlargement.
All this at the same ISO and same subject size (by size I mean percent of coverage of sensor which translates to percent of coverage of print/screen)

That means (if my wobbly calculations are correct), say, 50mm f/2 (in FF) vs. 25mm f/4 (in m43).
This way however the shutter speeds will be different (i.e. four (?) times faster for m43)?

Direct link | Posted on Jul 8, 2014 at 07:28 UTC
On What is equivalence and why should I care? article (2001 comments in total)

Great article, I will surely read it more than once... :-)

a question:
which lens/aperture combination do you have to use, say, on FF and m43, in order to get the same circle of confusion on the two sensors and a different DoF (more DoF on FF due to enlargement) when bringing both pictures to the same viewing size (paper, screen), the subject taking up the same part of the print/screen?

Direct link | Posted on Jul 7, 2014 at 17:48 UTC as 293rd comment | 4 replies
On Apple to cease development of Aperture article (424 comments in total)
In reply to:

MrTaikitso: iPhoto is one of the worst pieces of software ever developed, and I speak as a UX (User Experience) and software engineer. 1. A few years after it was launched, it managed to lose over 400 of my precious photos. And because they were being backed up, and the way the bug erased the images, I never got them back. Many others reported odd bugs too. 2. More recently, as part of a huge multi year archiving effort (& to escape it's bugs), I exported thousands of priceless photos & scans from iPhoto. Only later did I discover that EVERY SINGLE portrait oriented photo had been mysteriously cropped such that only about 5% of the photo was saved. I lost another 500 or so images & no idea which ones! 3. The UX is awful & inconsistent with Aperture, a superbly designed app, the very opposite of iPhoto. So why don't Apple do the reverse and make Aperture their default main photo/video app? Seems they are dumbing down to appeal to the idiots that buy iPhones purely to Snapchat & Instagram. Tragic!

Because!
:-D

Direct link | Posted on Jun 28, 2014 at 12:49 UTC
In reply to:

Decoboy: So how do I get 8.5 ACR for my Lightroom 5.4? Weren't we told that LR would still be free-standing, i.e. not tied to CC?

I downloaded 8.5 but it says it is not applicable for me?

@dpreview
why merging this story with the comments on the Release Candidate?

Direct link | Posted on Jun 19, 2014 at 22:44 UTC
On 2014 Waterproof Camera Roundup article (234 comments in total)
In reply to:

Jeff Keller: Just a heads-up that we're aware that the Ricoh WG-4's ISO 200 studio test scene shot is out of focus. This should be resolved in the morning (our time).

Thanks,
Jeff

"Unfortunately, it's battery life is awful. "
^small typo, should be "its".
other than that, good article.

Direct link | Posted on Jun 17, 2014 at 06:58 UTC
In reply to:

ChrisSwiss: I was hoping for some pears, but all we get is apples.

When life gives you lemons... ;-)

Direct link | Posted on Jun 2, 2014 at 21:21 UTC
On Apple patents bayonet mount for mobile devices post (72 comments in total)
In reply to:

LensBeginner: Haha, was about to fall for it, then looked at the date...

@WaltSomething
Disregarding the patently offensive part of your message, I believe that a bayonet mount for a smartphone is not practical nor desirable.
A magnetic mount would be much more fast and effective to use, and much less complex.

Complexity adds to the price of a product, did you know that?

Direct link | Posted on May 26, 2014 at 20:41 UTC
On Centr captures 360-degree video at 4K resolution post (37 comments in total)
In reply to:

LensBeginner: Another proprietary file format...
no need for that, thanks

The next step is to start defining open standards for projection information.
Xml-based, maybe ;-)

Direct link | Posted on May 26, 2014 at 20:34 UTC
On Toshiba unveils UHS-II Class 3 microSD memory cards article (40 comments in total)
In reply to:

BorisAkunin: Can we have normal sized cards first?

@RedFox
Even if you only change smartphone every three years you'd like to be able to pay for storage just once.

Then you might shoot with your reflex and want to view the photos on your tablet WITHOUT having to mess with eye-fi, flu-fi, fi-fu, whine-wi cards.

Direct link | Posted on May 24, 2014 at 11:18 UTC
On Centr captures 360-degree video at 4K resolution post (37 comments in total)
In reply to:

LensBeginner: Another proprietary file format...
no need for that, thanks

Fact is, there's no need to use a proprietary standard for the whole image.
Just add a sidecar files for projection information, use a standard image format and be done with it.

This way one doesn't lose everything when *they* go bust...

Direct link | Posted on May 20, 2014 at 14:49 UTC
On Centr captures 360-degree video at 4K resolution post (37 comments in total)

Another proprietary file format...
no need for that, thanks

Direct link | Posted on May 20, 2014 at 08:00 UTC as 19th comment | 6 replies
In reply to:

DaPonti: My understanding is that the winners are chosen on the complete gallery/reportage. Go look at the galleries on the website, not just the sample pictures here. They are more than "very average shots and far from any professional level".

I do hope so.

Direct link | Posted on May 4, 2014 at 08:30 UTC
On Pressy gives your Android phone an extra button post (23 comments in total)

Nice ide... twenty seven what!?!?

Direct link | Posted on May 1, 2014 at 11:02 UTC as 11th comment

I call bull on this one.

Direct link | Posted on Apr 23, 2014 at 13:13 UTC as 6th comment
On Lytro announces Illum light field camera article (347 comments in total)
In reply to:

BJN: The Lytro interactive image samples are under 900 x 600 resolution. Do you think that they wouldn't provide higher resolution samples if they had them? The end image size in pixels can be provided despite the nonsense about megarays and equivalent of 5 megapixels conventional resolution. Where are the 2560x1920 (5 megapixel) image samples?

Talk about a no-information launch. No ISO range given. Is the f/2.0 lens fixed aperture (pretty sure it has to be)? If the lens is fixed aperture and the max shutter speed is 1/4000 second, how does the camera handle bright light scenes? What control does the photographer have over exposure? What's the frame rate and write time? For $1,600 Lytro had better have a lot more information and better resolution examples to show. The samples are cute but highly staged. The 3D baseline separation is tiny, so we get shown shots of miniatures.

Nice find indeed.
This means that they have no idea yet and it's all still marketing & rendering stuff.

Direct link | Posted on Apr 23, 2014 at 13:13 UTC
On Lytro announces Illum light field camera article (347 comments in total)
In reply to:

BJN: The Lytro interactive image samples are under 900 x 600 resolution. Do you think that they wouldn't provide higher resolution samples if they had them? The end image size in pixels can be provided despite the nonsense about megarays and equivalent of 5 megapixels conventional resolution. Where are the 2560x1920 (5 megapixel) image samples?

Talk about a no-information launch. No ISO range given. Is the f/2.0 lens fixed aperture (pretty sure it has to be)? If the lens is fixed aperture and the max shutter speed is 1/4000 second, how does the camera handle bright light scenes? What control does the photographer have over exposure? What's the frame rate and write time? For $1,600 Lytro had better have a lot more information and better resolution examples to show. The samples are cute but highly staged. The 3D baseline separation is tiny, so we get shown shots of miniatures.

The ND would have to be built-in to be of any use.
I can't imagine someone wanting to bother with filters because "they have to, by design".

I use filters myself, but if I'm in a hurry and need to capture a moment, fast, I'd like to just roll my finger on the aperture/shutter dial (depending on mode) and be done with it.

Direct link | Posted on Apr 22, 2014 at 20:00 UTC
On Lytro announces Illum light field camera article (347 comments in total)

Now we're talking useful/usable!
Proprietary is obscurantist, though...

Direct link | Posted on Apr 22, 2014 at 16:09 UTC as 82nd comment
On Toshiba unveils UHS-II Class 3 microSD memory cards article (40 comments in total)
In reply to:

RedFox88: This makes the size of CF cards look very obsolete.

@PeterTom
Never dropped one of those in my whole life...

and yes, CFs are clunky

@RedFox88
...and because flex circuits break a wee little bit too often for my personal taste...

Direct link | Posted on Apr 19, 2014 at 15:16 UTC
On Toshiba unveils UHS-II Class 3 microSD memory cards article (40 comments in total)
In reply to:

BorisAkunin: Can we have normal sized cards first?

@RedFox88
It was about time that we had a "standard" standard...
That's exactly why I bought microSD cards for my camera & camcorder, so that I can swap them in & out all my devices (including smartphones & tablet) to my heart's content.

And, btw, smartphones without an SD card slot **** BIG time... :-D

Direct link | Posted on Apr 19, 2014 at 15:14 UTC
On Pentax K-3 Review preview (485 comments in total)

Cons:
1. never shot jpg
2. ditto
3. that's a problem with lenses, not camera
4. true. But it's a camera, not a videocamera
5. true

...not many cons there, are there? ;-)

Direct link | Posted on Apr 12, 2014 at 13:41 UTC as 55th comment | 6 replies
Total: 353, showing: 21 – 40
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