Roland Karlsson

Roland Karlsson

Lives in Sweden Stockholm, Sweden
Works as a Programmer
Joined on Feb 23, 2002
About me:

Collector of K-mount and M42 stuff. Main camera K-5. Also interested in camera technology, e.g. Foveon. Also interested in computer based image analysis and transforms.

Comments

Total: 1711, showing: 1 – 20
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In reply to:

eno2: A proper video tests is conducted from a "bloody tripod" with steady scenes. From this, between the shakes and abrupt changes in exposure, very little can be examined.

Nice 4K demonstration! Now, Fuij is not 4K, but rather 2K. I get your point. If you want to see the max IQ you can get, you need to be more careful when taking the movie. Now - the DPR video seems more aimed at GoPro shooters. Which might also be relevant.

Direct link | Posted on Feb 8, 2016 at 10:49 UTC
In reply to:

eno2: A proper video tests is conducted from a "bloody tripod" with steady scenes. From this, between the shakes and abrupt changes in exposure, very little can be examined.

You mean a test shall be made with as little challenges as possible?

Maybe the shakes and abrupt exposure changes tells you something how it handles shake and abrupt exposure changes?

Direct link | Posted on Feb 8, 2016 at 10:28 UTC
In reply to:

arhmatic: "forever"? ditch the focus by wire, typical, ALL lens makers. Do all mechanical. The only way to make them forever.

The reality is,
-this wire thing might break anytime. Might not be supported in 2-3 decades...
-compatibility is an issue. How can I use my Sony lens if suddenly I want to get a body from different maker? Adapters don't work. Make them all mechanical, so we can at least focus.

The reality is, my old, 1970s Nikkor works on my Fujifilm like a charm. All manual. Fujiflm on Nikon? Never. Not that I'd need that, but just a thought... Again, do all mechanical (manual or autofocus, your choice) then it's at least a step towards "forever".

@vscd. I am a little surprised by your post. Do you think you are telling something that no one knows? Of course they have an auto stop down mechanism, if you have a M42 camera, e.g. a Pentax Spotmatic. Do you use such a camera?

Direct link | Posted on Feb 5, 2016 at 20:10 UTC
In reply to:

arhmatic: "forever"? ditch the focus by wire, typical, ALL lens makers. Do all mechanical. The only way to make them forever.

The reality is,
-this wire thing might break anytime. Might not be supported in 2-3 decades...
-compatibility is an issue. How can I use my Sony lens if suddenly I want to get a body from different maker? Adapters don't work. Make them all mechanical, so we can at least focus.

The reality is, my old, 1970s Nikkor works on my Fujifilm like a charm. All manual. Fujiflm on Nikon? Never. Not that I'd need that, but just a thought... Again, do all mechanical (manual or autofocus, your choice) then it's at least a step towards "forever".

RS-232 is a standard. The nearest you get to a standard for camera lenses is M42. I agree that lack of auto stop down is irritating for M42. That is why I mainly use K-mount for old lenses. But, auto focus is not a big plus in old lenses IMHO. Pure manual focussing lenses are much better to manually focus.

Direct link | Posted on Feb 5, 2016 at 00:12 UTC
In reply to:

Sannaborjeson: Forever? Sounds a bit silly.
The only lenses we now use 'forever' are those with MF and mechanic aperture.

@Timbuktu. Forever means that they can be serviced by yourself.

Direct link | Posted on Feb 5, 2016 at 00:04 UTC
In reply to:

Roland Karlsson: If you want lenses that can be used forever, make manual lenses that use the M42 mount.

Thats a point, of course. Still, I assume simplicity is king when it comes to survival. A fully manual lens needs very little adaptation to be used. A lens with electronics, with only auto focus and auto aperture is something totally different.

Direct link | Posted on Feb 5, 2016 at 00:01 UTC
In reply to:

onlooker: Tiny electric motors and "forever" do not go together in the same sentence.

yepp

Direct link | Posted on Feb 4, 2016 at 23:55 UTC
In reply to:

coody: To be used forever, you need to invent a 24-200 f 2.8 lens. Can you?

Non zoom lenses tends to last longer. Simplicity is the key to survival.

Direct link | Posted on Feb 4, 2016 at 23:55 UTC
In reply to:

arhmatic: "forever"? ditch the focus by wire, typical, ALL lens makers. Do all mechanical. The only way to make them forever.

The reality is,
-this wire thing might break anytime. Might not be supported in 2-3 decades...
-compatibility is an issue. How can I use my Sony lens if suddenly I want to get a body from different maker? Adapters don't work. Make them all mechanical, so we can at least focus.

The reality is, my old, 1970s Nikkor works on my Fujifilm like a charm. All manual. Fujiflm on Nikon? Never. Not that I'd need that, but just a thought... Again, do all mechanical (manual or autofocus, your choice) then it's at least a step towards "forever".

@zkz5. The problem is protocol at all. Something that shall survive must be easy to use. Very easy. A 100% manual lens with screw mount is the best bet. A M42 lens.

Direct link | Posted on Feb 4, 2016 at 23:53 UTC
In reply to:

Flashback: Ohtake launches his flagship lens, and tells us it's the dog's bxllxcks, but why on earth didn't he show us some convincing images?

Because convincing images are not made by lenses, but rather by humans.

Direct link | Posted on Feb 4, 2016 at 23:50 UTC
In reply to:

Retzius: forever in technology terms = 5-10 years

Hmmm ... I have lenses from 1970 that I use and others have even older lenses. And I assume those lenses might be uses just as long again. So - maybe 100 years is forever.

Of course, if the lens has electronics or lacks a manual aperture or focussing, then the life expectancy might be 10 years.

Direct link | Posted on Feb 4, 2016 at 23:49 UTC
In reply to:

Roland Karlsson: If you want lenses that can be used forever, make manual lenses that use the M42 mount.

It is nice that you can adapt. But, you also need someone that makes the adapter. Forever is rather far away in the future. So, when a camera nerd in year 3000 wants to use a legacy lens, then it is probably only M42 that have survived. E mount and F mount are then only myths. Maybe Pentax K mount is possible also. It have had a tendency to be adopted by other camera.

Direct link | Posted on Feb 4, 2016 at 23:14 UTC
In reply to:

Thorgrem: 'We want to make lenses that can be used forever'. Not going to happen. Every mount will eventually be obsolete. If this was the startingpoint of these lenses the safest bet was to make it for Canon EF-mount or Nikon F-mount.

As I said above. Manual lenses and M42 mount. That is the best bet for living forever.

Direct link | Posted on Feb 4, 2016 at 20:56 UTC

If you want lenses that can be used forever, make manual lenses that use the M42 mount.

Direct link | Posted on Feb 4, 2016 at 20:50 UTC as 105th comment | 6 replies
In reply to:

Boss of Sony: I'll be interested to see how the image quality compares with the Pentax Q.

Please Boss, no kidding. This is serious business. Sort of :)

Direct link | Posted on Jan 30, 2016 at 09:20 UTC
In reply to:

villagranvicent: Keep teasing while all other brands keeps releasing...

@Villa - it is probably just as capable as any other FF DSLR camera.

Sure, nice photos is always fine. But, it will really not say anything.

But, showing boring, not technically brilliant photos is a kind of waste of something. Peoples life maybe?

Direct link | Posted on Jan 30, 2016 at 00:52 UTC
In reply to:

rrccad: seriously .. we care anymore?

Hmmmm ,,,, Canon and Sigma in the gear list. Lots of Canon. Seems like you do not care at all.

Direct link | Posted on Jan 29, 2016 at 22:27 UTC
In reply to:

PhotoKhan: From mock-up to teaser site, to mock-up behind a glass, to teaser photos...
There's no limit to what Pentax can do.

Simen .... movies are 2 hours or so. This teaser is too long ... no doubt about it. I can understand Pentax though. They needed something to not make people just forget about it. That is the risk of early announcements --- that people forget and maybe also get annoyed. I do not like this boring teaser ... but it is a bit hard yo know what Pentax otherwise should have done.

Direct link | Posted on Jan 29, 2016 at 22:21 UTC
In reply to:

villagranvicent: Keep teasing while all other brands keeps releasing...

Yes - and? It is delayed. We all know that.

Direct link | Posted on Jan 29, 2016 at 22:16 UTC
In reply to:

princecody: Who is making the sensor?

No, it is likely the 36 MP Sony sensor. If it is the 42 MP, I will be mildly surprised and if it is the 24 MP, I will be very surprised.

Direct link | Posted on Jan 29, 2016 at 22:02 UTC
Total: 1711, showing: 1 – 20
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