Tapani Tarvainen

Lives in Finland Finland
Joined on Oct 31, 2007


Total: 35, showing: 1 – 20
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In reply to:

Lee Jay: Up to 10m (because light doesn't penetrate water well). But the ocean's average depth is over 3,000m, and that's the main reason we know so little - because it's so deep and dark (and huge), and therefore inaccessible to long-range sensors.

Radar doesn't penetrate water, that's why submarines (and their hunters) use sonars (which in turn don't work in space, so they can't be used in satellites).

The trick used to make latest ocean floor maps was measuring minute changes in gravity from satellites, cf.

Link | Posted on Apr 27, 2018 at 07:33 UTC
In reply to:

Old Cameras: It just seems overwhelmingly obvious that an animal cannot own a copyright. Or own anything, or have any legal standing at all beyond what is expressly spelled out in the law.
If I set up a camera with a focus trap and captured an image of an animal who walked into focus range, and was therefore photographed automatically by the camera, it would never occur to me that the image belonged to anyone other than me - because it's my camera and I was breaking no law at the time.

While I agree with this ruling, it is not at all obvious that an animal cannot own anything. It would probably indeed need new laws, but I can easily imagine law allowing people to will or donate their property to their pets, for example, with stipulations on how it is to be managed, just as with a legally non-competent person. Stranger things have happened.

Link | Posted on Apr 25, 2018 at 04:28 UTC
In reply to:

Yake: Only humans can pursue copyright infringement claims — of course. That much was obvious from the start. PETA did a dumb thing in this case.

Actually that's not quite correct: corporations and other legal persons can also pursue copyright claims. But (non-human) animals indeed cannot (in the USA anyway, unless laws are changed).

Link | Posted on Apr 25, 2018 at 04:21 UTC
In reply to:

yenda: what does "animal had constitutional standing but lacked statutory standing " mean in plain English for non-law educated non-native English speaker?

I take it to mean in effect that the constitution wouldn't prevent Congress from passing a law that'd give an animal the right to sue, but (so far) Congress hasn't done so.

Link | Posted on Apr 25, 2018 at 04:18 UTC
In reply to:

sharpbokeh: 25% of future revenue? are the charities under peta's umbrella? how is he supposed to run a business? and photography isn't the most lucrative industry...
lawsuits aren't something everyone likes to initiate, but in this case i hope he sues their ars* off and runs them into the ground

Without seeing the settlement it is not clear to me what impact if any it has on the court's decision on legal fees. If PETA's lawyers are good (which this case makes doubtful) they have taken that possibility into account in the settlement, but maybe not, especially since they obviously expected the court to drop the case after they made it.

Link | Posted on Apr 25, 2018 at 04:09 UTC
On article Behind the scenes: Shooting Lamborghinis in the snow (84 comments in total)
In reply to:

NumberOne: Personally would rather be pilot than photographer on occasions like those - Even being 4WD and icy... :)
...As for the responsibility towards future generations I guess the complainers never used airplanes and other modern transportation means, among other; maybe they also don't buy consumer products and just live naturally in the jungle! :) :) :)

Here (small town in central Finland, about 62° North) most roads are currently covered with ice and snow. Driving is, eh, interesting, also with an old car like mine with no fancy computerized anti-skid features or ABS brakes. A modern 4WD with all bells and whistles would make it boring. :-) Not sure about photogenic...

Link | Posted on Mar 16, 2018 at 08:26 UTC
In reply to:

LDunn1: Please shoot a (clear) night sky wide open for approx 30 seconds with this lens on a full frame sensor. I'd like to see how it renders point light sources (aka stars) towards the edges/corners of the frame.

I was excited with the announcement of the Sigma 24 f1.4, but then I saw a review which included a point light source in the corners & edges shot wide open & I was a bit disappointed. I'm hoping this 14mm performs better with such things than the 24 appears to.

For me the primary use for this lens would be aurora borealis, and with them 5 seconds is more typical - and that's where the wide aperture would really help as it'd allow using lower ISO sensitivity.

But nonetheless a 30 second exposure sample of stars would be useful for assessing coma.

Link | Posted on Mar 1, 2017 at 09:56 UTC
In reply to:

Boeing skipper: Very impressive.
Would love to see a night sky shot at f1.8 to check the coma.

For night photography there's never enough light, even though it is indeed done with tripod. Stopping down means exposure times grow, stars become trails, auroras become blur... The only point of this lens is speed, and if you need to stop down to get rid of the coma I'll rather go with Samyang/Rokinon 14/2.4.

Link | Posted on Mar 1, 2017 at 08:40 UTC
In reply to:

mikeyL: A lot of folks (like myself) are very interested in lenses like these for nightscape photography. Sure would be nice if you could include one or 2 tripod mounted star field shots of short enough exposure to not trail the stars so we could evaluate the coma of the lens in the corners.

Yes. Coma is definitely critical for me, too. If it isn't at least as good as Samyang 14/2.4, it's a no-go, regardless of anything else. So, can we have a star shot - pretty please?

Link | Posted on Mar 1, 2017 at 08:34 UTC
In reply to:

Biological_Viewfinder: The case should be thrown out of court for being frivolous. I don't care what happened; she's asking for $2.2 Billion and therefore the case should be dismissed on the basis of it being frivolous. It's stupid and I'm tired of the games. If there's ZERO chance she could get $2.2 Billion; then drop the case until she gets reasonable.

Secondly, why is the restaurant being sued? Wasn't it the photographer who did the actual "damage"? Sue the person not the deep pockets. Again, frivolous and needs to be dropped. If anything, she should be fined for bothering the public with her nonsense.

Do you have a reference to that "less than $300k" in the McDonalds case? Wikipedia says the court actually awarded her $640k (judge overrode jury's recommendation of $3M), it was appealed by both sides but settled out of court for an undisclosed sum, and there is no suggestion it was insufficient for her medical costs.

Link | Posted on Jan 10, 2017 at 09:56 UTC
On article Rugged Fujifilm XP120 arrives just in time for winter (25 comments in total)

"Freezeproof to -10°C" sounds a bit silly. (It's -22°C here in central Finland now and getting colder.) Fortunately most cameras can generally handle much colder temperatures than they're specced for (Canon 7D had no trouble at -30°C for example).

Link | Posted on Jan 5, 2017 at 09:47 UTC as 6th comment
In reply to:

CameraLabTester: The Piranhas are going wild on the tasty morsel that just dropped in, for 2 weeks.

This could happen on just about any country with the same Laissez-Faire attitude to crime, peace & order, justice and police protection.

In this situation, however, a stampede of delicious Holstein Cows just charged into the river.


Brazil as a whole is not really all that dangerous. Big cities, especially Rio and São Paulo, sure (though I've walked around in both carrying SLRs without incident), but countryside and smaller towns are generally pretty safe (with some exceptions, of course).

Link | Posted on Aug 6, 2016 at 18:51 UTC
In reply to:

nua: Looks like the end of Sandisk...oh well just need to figure out what are my other options than WD!

I've got WD drives bought in 2008 still going strong, as well as several newer ones. Admittedly those are RE* series disks rather than the cheap stuff, but nonetheless it goes to prove WD can make pretty reliable disks - certainly better than Seagate in my experience (even if not quite as good as IBM/Hitachi).
Of more recent crop WD Red series have performed well for me, too.

Link | Posted on May 27, 2016 at 09:06 UTC
On article Rice Hill: Shooting in Riisitunturi National Park (31 comments in total)
In reply to:

pannumon: Great photos! A notice: in Lapland the days in winter are extremely short and in summer extremely long. This means that sun angle is low, and you get the golden hour for like half of the day (assuming that it is not cloudy, as it often is).

Autumn is great time for photography in Lapland, as you get separate autumn colors for the trees (not spruces though) and the ground vegetation.

Summer is a great time for shooting mosquitoes, you get them in every single photo whether you want or not (but there are less mosquitoes at the hills).

Mosquitoes only arrive after mid-June though. I go to Lapland every year in early summer, during first three weeks of June, when sun already stays up 24h but mosquitoes haven't arrived yet. Midsummer though, notably July, is recommended mainly for entomologists and others who like insects. :-)

Link | Posted on May 16, 2016 at 07:12 UTC
On article Rice Hill: Shooting in Riisitunturi National Park (31 comments in total)
In reply to:

Requin: How did you protect your gear from the coldness. Most "freeze proof" equipment goes up to -10 degrees Celcius. Don't you risk your gear going there in cold weather? I live in Finland and have broken a sensor already.

That is strange. I also live in Finland and frequently shoot below -20°C and never had any sensor problems. On one occasion I had my camera (Canon 7D) out for two weeks nonstop when temperature never rose above -25°C and averaged close to -30°C, without any serious problems (lcd display got dimmer, but recovered when eventually returned to warmth). One smaller camera had a problem with its clock resetting itself around -20°C though. I'd be really curious to hear how the sensor broke.

Link | Posted on May 16, 2016 at 07:04 UTC
On article Rice Hill: Shooting in Riisitunturi National Park (31 comments in total)

Lapland in winter is indeed magical. Regarding the difficulty of using tripod in snow: I've used plastic plates attached to tripod legs as sort of tripod-snowshoes - in certain kinds of snow they work fairly well.

Link | Posted on May 16, 2016 at 05:54 UTC as 6th comment | 1 reply
In reply to:

bwana4swahili: An improvement over some of the WWII ideas of replacing the whole eyeball with a false eye / camera. The stuff of spy stories...


Link | Posted on May 2, 2016 at 08:22 UTC
In reply to:

star shooter: Not having a tiltable screen like the 60Da has, is a bit daunting if you are imaging near the Zenith and have to get down on all fours to look at the image. I use an USB connection to the PC, control my exposures.

The biggest factor in any camera is the 'noise' that builds up as the sensor gets hotter. So unless you are imaging at temps no more than 20C or lower, no matter what Iso you use, the image will take on noise. But, having a FF sensor this may not be a problem. Either way, I'm getting one.

My 60Da has been doing great for over year now and if the D810A can match or do better, then its winner no matter what others say. Let's see some test images Nikon!

"The biggest factor in any camera is the 'noise' that builds up as the sensor gets hotter. So unless you are imaging at temps no more than 20C or lower, no matter what Iso you use, the image will take on noise."
Fortunately that's not so problematic here in Finland, where astrophotography is mostly limited to winter anyway (summer nights aren't dark enough) and temperatures are more likely to be -20°C than +20°C. :-)

Link | Posted on Feb 10, 2015 at 14:02 UTC
On article Panasonic Lumix DMC-GM5 Review (457 comments in total)
In reply to:

kpaddler: "Not built for extended use in cold conditions"

As usual, DP doesn't disappoint with its useless points raised.

The camera lasts in cold weather longer than the people who carry it.

My old Panasonic GX1 sure failed in cold well before I did. First to go was its clock, which reset itself already at around -20°C (-4°F). Also, small cameras are generally hard to use when it gets so cold you need to use gloves, let alone heavy mittens - but some are harder than others (for example, I found Canon G11 surprisingly easy to use even with mittens on, despite the small size of some of its buttons).

Link | Posted on Jan 29, 2015 at 08:32 UTC
Total: 35, showing: 1 – 20
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