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: 162, showing: 1 – 20
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In reply to:

trungtran: Cloud is the only way to stop the piraters.

You do not need to "hack the server" if you can steal someone's log in credentials.

Link | Posted on Jul 26, 2017 at 16:03 UTC
In reply to:

frod: ridiculous story. if your lens doesn't weigh at least 1kg your photos will be trash and you may as well have used your smartphone.

Eh, that was implied in the article, what do you think the lead glass is for? You gotta read between the lines!

Link | Posted on Jul 26, 2017 at 15:47 UTC
In reply to:

trungtran: Cloud is the only way to stop the piraters.

But a local offline .exe is the only way to get my money.

Link | Posted on Jul 26, 2017 at 15:43 UTC
In reply to:

108: splendid video .... just turn the crappy music off

I liked the bespoke music, but to each their own.

Link | Posted on Jul 26, 2017 at 15:37 UTC
In reply to:

zxaar: Looks like he did not send memo to voigtlander that sony closed the shop on e mount.

https://www.dpreview.com/forums/post/59863981

The FUD people spread...

I don't know the guy you are quoting and whether you have beef with him, but:

This article:
"a Sony E-mount macro lens for full frame sensors"

His post:
> Looks to me like Sony lost interest in E cameras after FE cameras came out and were such a big success. When's the last time they released an interesting new E lens?

FE = Full Frame E

In light of this, would you like to rephrase your post? Or shall we just forget this? I mean, it's pretty clear the poster was referring to Sony releasing an APS-C lens, this Voigtländer is neither APS-C nor Sony-made...

Link | Posted on Jul 25, 2017 at 04:05 UTC
In reply to:

alandalsong: If you can still touch the sink while operating the camera, the solution is not really effective. The thermal contact between the source and sink is so poor, it hardly helps.
Just my opinion.
Flame on!

> By far, a more efficient method would be a small fan blowing across the camera body.

Forced convection cooling is indeed highly effective, but the problem with just blowing air at the camera is that the pick up of heat isn't very good. If you make the surface rougher, it helps, if you increase the surface area, that helps even more. So a (smaller) heat sink with a fan would be more effective. But it would use energy and might be audible in the video or even create resonance when on a tripod.
So, for some situations, a big ugly heat sink might actually be the best solution.

If you were talking about forcing air into the camera body, that requires surgery for a DIY solution and adds another minefield: dust!

Link | Posted on Jul 9, 2017 at 00:56 UTC
In reply to:

matthiasbasler: Honestly I have no idea why some people consider this a joke. Some decades ago so called "fix focus" compact cameras were widely spread among beginners, so the concept is not exactly out of this world.

This is clearly not the lens for studio photographers who desire optimum image quality and control over DOF.

But for street photographers it can be interesting. How often did I already miss a good shot because the camera didn't focus correctly (or at all) when I pressed the shutter button in a hurry in order to catch a fleeting moment? These were the occasions where such a lens could have helped.

Over 500$ sounds a bit expensive for such lens. But real prices may be lower after a while.

Paul, you are forgetting lots of lenses for the Leica L39 and M-mounts. (And arguably some other more obscure rangefinder mounts.)

Link | Posted on Jul 8, 2017 at 16:57 UTC
In reply to:

alandalsong: If you can still touch the sink while operating the camera, the solution is not really effective. The thermal contact between the source and sink is so poor, it hardly helps.
Just my opinion.
Flame on!

You are right that the contact is poor.

You are wrong with regards to the temperatures. The sink is huge and heat will distribute across its volume, that means the temperature will climb comparatively less. Furthermore, if you only need to remove a small amount of heat from the sensor to let it run continuously, then the temperature of the heat sink also won't climb high. And lastly, the heatsink temperature cannot get higher than the source temperature - the critical temperature of the sensor might be colder than "too hot too touch".

And lastly, it works for the videographer, so your statement that it won't work is obviously wrong.

Link | Posted on Jul 8, 2017 at 16:52 UTC
In reply to:

matthiasbasler: Honestly I have no idea why some people consider this a joke. Some decades ago so called "fix focus" compact cameras were widely spread among beginners, so the concept is not exactly out of this world.

This is clearly not the lens for studio photographers who desire optimum image quality and control over DOF.

But for street photographers it can be interesting. How often did I already miss a good shot because the camera didn't focus correctly (or at all) when I pressed the shutter button in a hurry in order to catch a fleeting moment? These were the occasions where such a lens could have helped.

Over 500$ sounds a bit expensive for such lens. But real prices may be lower after a while.

Make it 50USD or make it 100USD and smaller and we'd have a viable product, this is ridiculous. I'm sure some will buy it for the hipster factor, but...

Link | Posted on Jul 7, 2017 at 18:26 UTC
In reply to:

Iloveaircraftnoise: Spec wise the 6d2 seems not too bad. Canon knows they just needed to tweak a few things like swivel screen, a few more focus points. They will sell plenty of these.

I really don't know what the infatuation with 4k video is. Here in Australia, most tv is still broadcast in standard definition !!

How many average consumers care about downsampling 4k to better 1080 ?

@AngularJS These are not really complicated techniques. Even beginners can do a slideshow in free Windows Movie Maker and add zoom&pan to that, so doing the same with actually moving images is really not much of a step up. It is certainly much *much* less advanced than a dedicated 4k video camera.
Again, I am more than happy with 1080p for my hobby stuff on youtube and the filesize of that is already annoying me, but I can certainly see the appeal of the aforementioned possibilities.

Link | Posted on Jun 30, 2017 at 02:46 UTC
In reply to:

Iloveaircraftnoise: Spec wise the 6d2 seems not too bad. Canon knows they just needed to tweak a few things like swivel screen, a few more focus points. They will sell plenty of these.

I really don't know what the infatuation with 4k video is. Here in Australia, most tv is still broadcast in standard definition !!

How many average consumers care about downsampling 4k to better 1080 ?

4K enables cropping, rotating, panning, zooming if your final video is "only" 1080p. That is a huge deal for many people. (Not for me, but I understand those people's needs.)

Link | Posted on Jun 29, 2017 at 19:19 UTC
In reply to:

GatanoII: More options for Canon glasses owners (still native Canon cameras work way better)

Which given the fact that Canon does not have a full frame mirrorless, is kind of not saying much.

Link | Posted on Jun 29, 2017 at 19:15 UTC
In reply to:

hansip87: As an a6300 owner, i do wonder if going with A7ii will be considered as an upgrade or downgrade in spec/quality dept? Of course it's going to be a lot more expensive but i don't want to talk about price here, only the overall quality (i.e. AF speed, ISO speed). Anybody has an opinion on this matter?

Thank you again, Brendon!
Focus speed is of little concern for me, but focus certainty very much is. There is just no perfect camera system, and I am in no particular rush. I feel Sony's system is progressing all the time, so in a year's time, I might not even have a desire to go with adapted AF lenses.

Link | Posted on Jun 29, 2017 at 18:17 UTC
In reply to:

hansip87: As an a6300 owner, i do wonder if going with A7ii will be considered as an upgrade or downgrade in spec/quality dept? Of course it's going to be a lot more expensive but i don't want to talk about price here, only the overall quality (i.e. AF speed, ISO speed). Anybody has an opinion on this matter?

Thank you Brendon, it is really good to hear that type of real world experience.
I would use the A7(R)ii for MF lenses and for AF mainly adapted Canon lenses, largely for static photos with very limited video. As such, would you mind to elaborate on your point with regards to adapted lenses?
It is rare to meet someone who uses these two for photography, although I know a few who use the A7Sii and A7Rii for video - but that obviously won't help me much.

Link | Posted on Jun 28, 2017 at 19:28 UTC
In reply to:

camcom12: Certainly this 18-400mm will be handy for many, as the 16-300mm is handy for my casual imaging. But if it's possible to improve IQ, at both ends, I'd go for a 16-200mm or perhaps a 15-150mm, which would be quite innovative.

agree with camcom12, it would be nice to have more options. I started with the original 18-250 on APS-C as my main lens, then 28-300 on FF. I know FF is not meant to be for these comparatively low quality superzoom lenses, but their compact size and versatility are still very helpful assets.

Link | Posted on Jun 24, 2017 at 00:01 UTC
On article Fujifilm GF 32-64mm F4 R LM WR sample gallery (140 comments in total)
In reply to:

ZeBebito: Nothing a proper FF camera can't do.

deep7 Out of all people, *you' have the nerve to call me biased, that is amazing :D I think you are simply running out of arguments, seeing how you have provided none so far apart the flawed "hurr durr it is smaller, it must be worse."
What bias have I shown, tell me?
As I invited darngoodesign: "If you disagree, make an argument, an example, some physics equation, show us you can do more than one-liners."
BTW, don't say sorry if you are not sorry, you come across as passive aggressive and disingenuous.

Link | Posted on Jun 23, 2017 at 23:52 UTC
In reply to:

hansip87: As an a6300 owner, i do wonder if going with A7ii will be considered as an upgrade or downgrade in spec/quality dept? Of course it's going to be a lot more expensive but i don't want to talk about price here, only the overall quality (i.e. AF speed, ISO speed). Anybody has an opinion on this matter?

brendon1000 - that is interesting, I am looking at those two cameras. I read through the A7ii vs A7rii comparison article on dpreview and it sounded like the A7rii is basically in a different league. Would you say that in practice this is not quite as pronounced?

Link | Posted on Jun 23, 2017 at 23:44 UTC
In reply to:

DPPMetro: By the way, here's a note: Pentax's K-1 was supposed to be sold at 1999 (and also comparably in Euros), but actually the price was raised for the street. Due to strict controls in Europe, undercutting is not allowed. The inability to undercut was supposed to encourage B&M sales, but has ended up backfiring due to the fact that slow stock can not be undercut to be moved, as is the case for my main camera store, who still has lenses from September there (I bought the K-1). The other two stores are having similar issues and are not restocking unless there's an order. Now as of the second to last dire report of Ricoh's financial state, Ricoh raised prices across the board Europe- a point discussed on ALL of the other Pentax forums, but when discussed on the forums here, the mods deleted all references to price hikes, despite every other forum reporting them, territory by territory.

Those anti-under-price contracts have nothing to do with the EU. The EU regulations are against predatory pricing, a company with a large market share (for example Canon) are not allowed to sell their products below their production cost in order to drive out competition. (Similar laws exist in the US, but they are not enforced since a 1993 verdict.)
https://en.wikipedia.org/wiki/Article_102_of_the_Treaty_on_the_Functioning_of_the_European_Union
Think about it, if it were EU law, it would not have to be part of the dealer contract! No, these rules are imposed by the manufacturer on their dealers.

Link | Posted on Jun 23, 2017 at 23:42 UTC
In reply to:

Impulses: Pentax aside, this seems like a bit of a stagnant category...

If you compare camera prices between the US and the EU, also compare prices for healthcare. Different countries have different ways how they organise their lives.

Link | Posted on Jun 23, 2017 at 23:30 UTC
In reply to:

Boomy: Hello all. I could use sone help. Its been 10 years since I've wanted to shoot pictures again. I'm preparing for a trip to Iceland with my family. Here is where I stand.

I have decided to buy a Sony a7ii. I will most likely buy the 24 240 zoom simply because there isn't much choice and I can't afford a multiple lens budget at the moment. If you have lens suggestions please let me know. I want a lens that will be compatible with the full field sensor.

Questions:

I have a Sony 18 200 3.5 lens (made in Japan) from my older Sony alpha 100. Should I buy the new lens and sell the old one? Not even sure if mount us the same. Don't mind buying new lens.

I have a Sony GN56 flash unit. Is this compatible with the a7ii and lens with TTL?

Any suggestions for a light weight travel tripod welcome.

I think I have to disagree with STS here.
I have switched from a Pentax ist DS with the 18-250 to a Sony A850 with a 28-300 to a Pentax K-1 with their 28-105 and a Sigma 135-400. The image quality went up, but not the quality of my "art".
I need to get a properly adjusted 28-300 ASAP, because this constant lens switching is driving me nuts.
I do move around with a super zoom, I am not lazy in that regard.
But if I need to switch between three lenses (I use a super wide as well), that drags me down.

Link | Posted on Jun 23, 2017 at 23:23 UTC
Total: 162, showing: 1 – 20
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