JensR

Lives in United Kingdom Bath, United Kingdom
Works as a Mechanical Engineer
Joined on Nov 23, 2003
About me:

Hi,

thanks for stopping by!
If you want to see what I'm up to, send me a message :)

My 'plan':
Talk Pentax into a digital Electro-Spotmatic! (This needs some work...)

-------------

Older Signatures:

'LBA knows no bounds, and seeks no justification...' (Jim King, 2005)
http://www.jr-worldwi.de/photo/index.html - Photography, Tech and Geek stuff :}

'Why is everyone answering rhetorical questions?' (Me, 2005)

'Well, 'Zooming with your feet' is usually a stupid thing as zoom rings are designed for hands.' (Me, 2006)

'I only trust those photos I have faked myself.' (Me, 2007)
http://www.jensroesner.de/

--=! Condemning proprietary batteries since 1976 !=--

'I don't want them to believe me, I just want them to think.'
Marshall McLuhan

Comments

Total: 453, showing: 81 – 100
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On article Sample gallery: Pentax K-1 II (155 comments in total)
In reply to:

JensR: Thank you so much for doing a full review of this camera. I cannot tell you how much the different noise characteristics interest me.

If you feel so strongly, then you should warn people of Sony's stareater algorithm ;)

Anyway, Pentax have shown that they managed to improve the RAW perfomance of the 24MP Sony APS-C CMOS without dodgy tricks, so if they can do that for the K-1, that would be great.

Link | Posted on May 3, 2018 at 15:54 UTC
On article Sample gallery: Pentax K-1 II (155 comments in total)
In reply to:

JensR: Thank you so much for doing a full review of this camera. I cannot tell you how much the different noise characteristics interest me.

I am actually thinking about getting a used A7Rii as a second body, but the A7Riii is too expensive, not weather sealed enough and does not have enough buttons to replace my K1.

FWIW, it is hard not to notice your repetitive criticism of the K1 and Pentax in these comments. It feels a bit excessive.
The A7Riii is in the same noise league as the Nikon D850 and the A7riii is not better at high ISO than the A7Rii. If Pentax can squeeze out half a stop of noise performance, the K1ii will join those three cameras. And at that point, other features become more important.
https://www.dpreview.com/reviews/sony-a7r-mark-iii-review/5

Link | Posted on May 3, 2018 at 15:38 UTC
On article Sample gallery: Pentax K-1 II (155 comments in total)
In reply to:

anticipation_of: Would have been nice to see how this performs at super-high ISOs, since that capability is supposedly one of the main selling points of this camera. No way to know whether ISO 819,200 is worth paying for though until we see the output.

Better noise performance also helps at low ISOs where you push the shadows and it increases DR. I am skeptical that it will be more than 0.5 stops better than the Mark 1, though.
Ultra high ISO is a marketing gimmick, improvements for ISO around 6400-25600 can be relevant in practice.

Link | Posted on May 3, 2018 at 15:16 UTC
In reply to:

WillWeaverRVA: "Monitor for photographers on a budget"

"$399"

...gotcha. I'll stick to the 24" monitor that's actually better than this one that I bought for $200 less.

Thanks! I feel this is the next upgrade I have to do after I get a new tripod... The range of options is just overwhelming though. I didn't have HP on my list of good monitor brands, I shall keep this in mind.

Link | Posted on May 2, 2018 at 18:15 UTC
In reply to:

WillWeaverRVA: "Monitor for photographers on a budget"

"$399"

...gotcha. I'll stick to the 24" monitor that's actually better than this one that I bought for $200 less.

Which one would that be, sounds interesting!

Link | Posted on May 2, 2018 at 17:58 UTC
On article Sample gallery: Pentax K-1 II (155 comments in total)
In reply to:

MrBrightSide: And there you have it. This camera is the real benchmark—not that awful, over-hyped and underperforming Sony junk you keep shoving in front of our faces in the hopes we'll abandon our aesthetic judgement and surrender to the mediocrity it represents.

Pentax lenses and cameras produce the most beautiful, most organic, most real of any imaging system on the market. Why would a photographer settle for anything less?

That is an interesting comment. I'm thinking of getting a Sony A7 of some variety to use my old manual focus Pentax lenses to benefit from the EVF focus assist and compact size.
My previous camera was a Sony A850, now I have the Pentax K-1.
Both brands have good points, great points and points that don't work for someone.

Link | Posted on May 2, 2018 at 16:22 UTC
On article Sample gallery: Pentax K-1 II (155 comments in total)

Thank you so much for doing a full review of this camera. I cannot tell you how much the different noise characteristics interest me.

Link | Posted on May 2, 2018 at 16:20 UTC as 31st comment | 28 replies
On article Hex Raven DSLR Bag Review (90 comments in total)
In reply to:

lighthunter80: This is a hell of an ugly bag...
There are so many nice looking and functional bags on this quite crowded market. Not sure if this one finds its niche.

This looks like fake leather of the cheapest kind. It probably isn't, but wow. OTOH, maybe a cheap-looking but actually sturdy bag *is* the best theft defense.

Link | Posted on May 1, 2018 at 15:12 UTC
On photo Sigma 10-20 DX at f/8 on an FX D800 in Guidenet's photo gallery (1 comment in total)

Thank you for posting this - how does the image circle grow when zooming in?

Link | Posted on Apr 27, 2018 at 20:03 UTC as 1st comment
In reply to:

sirhawkeye64: While I praise the designer's work, my question is WHY? It's like a pin hole camera that can take modern E-mount glass (so thus, the possibility of getting a focused image and zooming in/out). But as with pin hole cameras, without a viewfinder of any sort, you aren't really sure what the shot is going to look like until you develop it. Don't get me wrong, it's an interesting idea but for anyone to take it seriously, I think it needs some sort of optical view finder so people can at least estimate how the end resulting image will be framed.

Focusing lenses without a distance scale will be a problem in many cases.
Still a cool project :)

Link | Posted on Apr 27, 2018 at 14:37 UTC
In reply to:

Studor13: Why not just mount it on a Corolla and use the 10x speed in Final Pro to make it like it’s a Lamborghini?

That's a relief! :D
I knew the 10x was a joke, but there were others who seemed to seriously suggest speeding up footage with slower cars...

Link | Posted on Apr 27, 2018 at 10:31 UTC
In reply to:

Studor13: Why not just mount it on a Corolla and use the 10x speed in Final Pro to make it like it’s a Lamborghini?

Because speeding up car chases in post is 1960s technology. You cannot realistically speed up the dynamics of car driving in post.

Link | Posted on Apr 26, 2018 at 15:09 UTC
In reply to:

JensR: Talking about combining multiple photos: If you were to take four photos (at a longer focal length) to create a 2x2 "matrix panorama" it would be the best in terms of resolution but also have the biggest issues with subject movement.

You are of course right. But the delay is larger and so even things that are "almost" static can be a problem. Clouds for example. So I guess it can go either way.

Link | Posted on Apr 25, 2018 at 23:38 UTC
In reply to:

Maxxuman: There are plenty of precedents for this for those who are interested. Obviously not with the current tech but some good engineering and innovation to get the best possible in their time: https://petrolicious.com/articles/hollywood-horsepower-these-were-the-coolest-film-cars-behind-the-camera

I had seen some of these, but the camera operator sitting in the front trunk of a 911 is just absurd!
Great link!

Link | Posted on Apr 25, 2018 at 19:23 UTC
In reply to:

milkod2001: Over the top as it gets but if you can find fool to pay for it why not. Would not drone with attached camera offer much smoother video at like 10% of price? Plus it can offer video from above while this car setup cannot?

"if you can change the speed to any speed in post. "

Oh nice, or maybe do the whole thing in CGI to start with...

Link | Posted on Apr 25, 2018 at 19:21 UTC
In reply to:

Photomonkey: This is the sort of project that is designed to rent gear to well moneyed outfits that haven't thought of alternatives that would work as well or better for less money.

We are seeing this info as a consequence of their PR push to get the punters signed up.

Agreed, should have stuck to the original Audi R8 ;-P
But seriously, the Porsche Cayenne is really in a lesser league when it comes to handling - and I'd wager even with a tumor like that. This car is being used on a circuit, as part of a larger operation. The only potentially relevant drawback you list is the crew size, but seeing how this company has excelled in small crew aerial videography, I think they have that covered, too.

Link | Posted on Apr 25, 2018 at 19:20 UTC
In reply to:

Mike Davis: " there’s a slight sacrifice in speed and acceleration."

The use of so fast a car only makes sense for shooting equally fast road machines, but unless they've done some crazy mods to the suspension, that rig will push the CG strongly up and forward, manifesting a lot of understeer as a significant challenge for any driver. (As lateral acceleration increases, the rear slip angle will steer into the turn while the front slip angle tries to steer the car out of the turn.)

Just moving the CG forward is bad enough, but moving it up introduces increased roll, too. Uggh! I suspect this "camera car" will be far slower through all but the most perfectly banked, large-radius turns, due to handling issues, than due to any decrease in power to weight ratio. Maybe they plan to use it only at the drag races.

Original AWD Huracan has 43/57 weight distribution, so if anything this should be getting it closer to 50/50 ;-P
Tire width, compound choice and anti-roll bar settings should mitigate some of the ill effects. Of course it will be substantially slower than an unmodified supercar. But if you can make a suggestion for an off-the-shelf base car that can carry such a payload better and faster, let us (and the company) know.

Link | Posted on Apr 25, 2018 at 19:14 UTC
In reply to:

milkod2001: Over the top as it gets but if you can find fool to pay for it why not. Would not drone with attached camera offer much smoother video at like 10% of price? Plus it can offer video from above while this car setup cannot?

I guess an Audi R8 would be a bit more sensible. Pretty much has to be rear-engined, so "cheap" options like the Corvette and Camaro are out. Lotus Evora might be an option, but wouldn't offer the same performance, especially if the Huracan is the AWD version. Porsche also should have something fitting.

Link | Posted on Apr 25, 2018 at 15:47 UTC
In reply to:

Photomonkey: This is the sort of project that is designed to rent gear to well moneyed outfits that haven't thought of alternatives that would work as well or better for less money.

We are seeing this info as a consequence of their PR push to get the punters signed up.

What solution would you suggest to someone who wants to capture 4K/8K close-up footage of cars going around on a race circuit very fast?

Link | Posted on Apr 25, 2018 at 15:42 UTC

Talking about combining multiple photos: If you were to take four photos (at a longer focal length) to create a 2x2 "matrix panorama" it would be the best in terms of resolution but also have the biggest issues with subject movement.

Link | Posted on Apr 25, 2018 at 14:46 UTC as 59th comment | 2 replies
Total: 453, showing: 81 – 100
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