AlephNull

Lives in Australia Melbourne/Victoria, Australia
Joined on Dec 15, 2007

Comments

Total: 70, showing: 1 – 20
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In reply to:

ewitte12: I'd be more impressed if they increased the efficiency of LOSSLESS compression.

The problem with lossless compression is that it's much harder to get good compression. That was why the JPEG was formed in the first place (the group, not the format named after the group).

Link | Posted on Mar 19, 2017 at 22:24 UTC
In reply to:

AlephNull: I'm not surprised that it achieves a smaller size at a significant cost in terms of time.

Given how cheap CPU cycles are getting, though, we might see this moved into cameras.

Yeah, when it's taking 28minutes on a desktop CPU, it's not going into cameras, but it's possible that the CPU makers might be able to build dedicated hardware to speed it up - Intel added special hardware to accelerate encryption, and I think they put in hardware to assist video decode (or was it encode?). I could see plenty of reason to spend a few transistors on accelerating JPEG encoding.

Link | Posted on Mar 19, 2017 at 22:18 UTC

I'm not surprised that it achieves a smaller size at a significant cost in terms of time.

Given how cheap CPU cycles are getting, though, we might see this moved into cameras.

Link | Posted on Mar 18, 2017 at 01:07 UTC as 36th comment | 4 replies

B&H have announced shipping will start 10 April - maybe May is when they start shipping to everyone else? :-)

Link | Posted on Mar 18, 2017 at 01:03 UTC as 35th comment
In reply to:

petros vittas: again no EF native mount and hunting with mc11....no declick f ...
put these two things and it will sell like ice cream...

:-) I was going to point out that EF mount is definitely supported. Guess you meant FE mount, and had a typo.

Link | Posted on Mar 18, 2017 at 01:00 UTC
In reply to:

Zoom Zoom Zoom: Photography is dead. I'm surprised these magazines have survived for so long or that some are still hanging in there at all. There will not one left in a matter of a few short years. Not one. And this, along with no more compact cameras of any kind, no more video camcorders whatsoever, and eventually no more consumer dslrs or cameras of any shape or form. Nothing. The only "photographic machines" that will survive will be very high end specialized optical products and top end very purposes oriented professional cameras. Everything else will be just phones. That's it. As soon as proper pixel density is a bit higher & there are actual working zoom lenses inside smartphones (not dual lens gimmicks or digital zooms crap), it will be the final nail in the coffin of photography as it's still known today. There will be as many people owning an extra camera in addition to their cell phones in a few years from now, as there are people today still using VHS or Betamax to tape TV shows.

You said "photography is dead". Photography is capturing still images. It's booming - heck, you argue that yourself. So you ruined your own argument.

Hint: maybe you should have said something like "dedicated cameras are dead". I still think you'd be wrong, but at least your argument would be consistent.

Link | Posted on Mar 9, 2017 at 18:56 UTC
In reply to:

Zoom Zoom Zoom: Photography is dead. I'm surprised these magazines have survived for so long or that some are still hanging in there at all. There will not one left in a matter of a few short years. Not one. And this, along with no more compact cameras of any kind, no more video camcorders whatsoever, and eventually no more consumer dslrs or cameras of any shape or form. Nothing. The only "photographic machines" that will survive will be very high end specialized optical products and top end very purposes oriented professional cameras. Everything else will be just phones. That's it. As soon as proper pixel density is a bit higher & there are actual working zoom lenses inside smartphones (not dual lens gimmicks or digital zooms crap), it will be the final nail in the coffin of photography as it's still known today. There will be as many people owning an extra camera in addition to their cell phones in a few years from now, as there are people today still using VHS or Betamax to tape TV shows.

No.

Photography is far from dead. There are more still images being captured today than ever before.

You argue that cameras are dying, and I don't completely agree with you there, either - the cameras in phones are made inexpensively, and there will continue to be the desire to capture more than a phone can. The compact / point-n-shoot range will disappear, sure, but the enthusiast ranges will continue.

However, even if standalone cameras vanished completely, photography would continue - or do you imagine every still image being replaced by a video clip?

Link | Posted on Mar 8, 2017 at 09:48 UTC
On article Sony FE 85mm F1.8 sample gallery and first impressions (137 comments in total)

I believe the reason for focusing with the lens stopped down is to avoid focus error - some lenses focus differently stopped down vs wide-open.

Link | Posted on Mar 6, 2017 at 23:25 UTC as 3rd comment
On article Prime or zoom? LensRentals investigates (232 comments in total)
In reply to:

User3997598970: I never use zoom lenses. I never know where the focal lens is or the ratio between focal lens and diaphragm opening. In the old days we had a scale on every lens side. This was our “auto focus” We knew where it would be in focus and where it would be out of focus bwefore taking the picture. Today’s fans of zoom call what? A Yes! “Creamy boke!“ I read this like a comedy and laugh.

"focal lens"? Is that a lens that is in focus?

Link | Posted on Feb 15, 2017 at 07:55 UTC
On article Prime or zoom? LensRentals investigates (232 comments in total)
In reply to:

Rick Knepper: I scanned the article for tests with specific lenses and didn't see anything so I didn't read the article. No need to because I know what I know. If the following matches the article then great..

What I know is the best zoom cannot match the best prime (I'll throw the Zeiss Otus 55mm out as an example) but the best zoom can match some primes, especially budget primes or primes from a generation ago (for some brands at least) when the entire frame is taken into consideration.

IMO, the new standard for premium lenses is sharp across the frame wide open. The lens doesn't have to be uniformly sharp across the frame but the edges and corners have to be sharp with minor fall-off from the center.

Rick, it definitely didn't start with the 24-70 mark II - it has been around a hell of a lot longer than that!

Link | Posted on Feb 15, 2017 at 07:52 UTC
On article Prime or zoom? LensRentals investigates (232 comments in total)
In reply to:

FLruckas: "damn time"
Is that the time zone for Lens Rentals?
Just kidding.....
Someone can sell it to you for less even if its 1 cent less.
But it's not really what you're thinking of less unless it'd hundreds or thousands of dollars less.
There is variation from lens to lens.
You can get a bad copy.
Do lens manufacturers need to sell "certified" lenses?
How many of us have access to tools like Rodger?
Do we loose sight of anything when we know a good zoom can have some red areas where it's not as sharp?
In previous posts it was pointed out that F stop is a factor as well.
I'm assuming this post is done at the sharpest F stop for each lens.
So it becomes a multidimensional mine field of uh ohs.
F stop. Good copy. Zoom or not. Focus distance.
Since Rodger has access to so many lenses from so many manufacturers I wonder if he's ever published a sheet like
80% of Sigma ART lenses need to be calibrated etc.

It's worse than that, and Roger has discussed this before. You don't want a "perfect lens" - you want a lens that's perfect ON YOUR CAMERA.

The sensor on your particular camera might be a teeny bit forward or a teeny bit back, and still be "within spec". Imagine if you have a camera which has the sensor just a little bit forward, and your friend has one that's just a little bit back. Every lens you think is perfect (because it's focus a little forward, matching your camera) is one your friend will complain is rubbish; and vice versa (because his perfect lenses are focusing a little bit back).

Sure, it would be ideal if every body and every lens were perfect, but that's impossible.

What Roger has pointed out is that a prime is easier to get closer to perfect than a zoom, because it only needs to handle one variable (focus distance) rather than having to manage focus distance for all the focal lengths it can zoom to.

Link | Posted on Feb 12, 2017 at 19:32 UTC
On article Prime or zoom? LensRentals investigates (232 comments in total)
In reply to:

shademaster: stupid question: why is the subject distance not an important parameter? e.g. nobody ever talks about a given prime being soft for close objects but sharp for far ones. why not? (sorry if this is basic optics)

There are some reviewers who consider subject distance, but not consistently. I think they only mention it when there are significant differences.

Link | Posted on Feb 12, 2017 at 19:23 UTC
On article Prime or zoom? LensRentals investigates (232 comments in total)

I stopped using zooms on Canon around 2008. I used nothing but primes for four years. I had to use a zoom with Nikon for a while, but then I started using Sigma Art primes (I tried several Nikon primes, but I was unimpressed), and I could stop using zooms again.

I have one zoom now: a Sigma 150-600mm. I use it exclusively to shoot animals at the zoo, and accept the limitations for that.

In the studio I use a 50mm and an 85mm. In 2008, I was using the 50mm f/1.2 and the 85mm f/1.2. Now I'm using the 50mm Sigma Art and the 85mm Sigma Art.

Link | Posted on Feb 12, 2017 at 19:17 UTC as 21st comment | 1 reply
On article Prime or zoom? LensRentals investigates (232 comments in total)
In reply to:

starwolfy: Of course this article doesn't apply to Leica zooms which are as good as the best primes.

If we are talking about M lenses, then Leica doesn't make any zooms. So appealing to Leica means you go the "all prime" route.

Link | Posted on Feb 12, 2017 at 19:04 UTC
In reply to:

LJ - Eljot: So, prints from commercial version be less permanent?

Moreover, "less permanence" doesn't mean "instant fading". The previous version of Epson Ultrachrome HDX inks has been rated at 200+ years by Wilhelm Research, and black and white prints are expected to rate 400+ years. And that's before the new version of Ultrachrome HDX, with expectations of longer life.

So claims that the colour will change on the way to a client are serious hyperbole.

Link | Posted on Jan 14, 2017 at 16:43 UTC
In reply to:

shortchord: Well, while we're at it, let's pick our caterer based on the brand of frying pans they use, our wedding bands based on what brand of strings the guitarist uses, and our florist based on what make and model of van he or she drives. Those things are all about equally likely to be predictive of the quality of service those vendors can provide.

To me the "wedding bands" are the rings the bride and groom exchange - I'd never choose those based on some random guitarist :-)

Link | Posted on Jan 1, 2017 at 01:37 UTC

The man who shot my wedding used Hasselblad. Gosh, I guess I picked the wrong photographer!

Link | Posted on Jan 1, 2017 at 01:30 UTC as 55th comment | 1 reply

$110 billion, of which phone cameras constitute $100 billion (maybe $105 billion!)...

Link | Posted on Jan 1, 2017 at 01:21 UTC as 5th comment
On article GearEye is an RFID-based gear management system (45 comments in total)
In reply to:

AustinMN: "Bring Me That Awesome Camera Lens, Friend." has worked for me...when I follow it.
Bring - Batteries
Me - Memory Card
That - Tripod (use "My" for monopod)
Awesome - Adapter (I use a lot of adapted lenses)
Camera - uh, ok, I'll admit it, I'm old enough that I have forgot it.
Lens - Yep, that too.
Friend - Flash.

Oh. I thought you called your assistant "Friend".

Link | Posted on Jan 1, 2017 at 01:18 UTC
On article GearEye is an RFID-based gear management system (45 comments in total)
In reply to:

panzini: It has a range of...two meters.

That's pretty good for RFID. If the range is too long, all it knows is that the items are in the same room, rather than in the bag.

Link | Posted on Jan 1, 2017 at 01:16 UTC
Total: 70, showing: 1 – 20
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