rurikw

Lives in Finland Kotka, Finland
Works as a architect
Joined on Dec 15, 2004

Comments

Total: 163, showing: 1 – 20
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On article Throwback Thursday: the iPhone 4S (87 comments in total)

The 4S is the most amazing gadget I ever owned. It cost me 480€ on a 2 year contract. I thought it was a bargain for all it could do. I was favourably surprised by the IQ. Even sharpness, great colour, no distortion. Have greatly enjoyed it and used it a lot as a camera. Recently upgraded to a Samsung Galaxy S6 to be able to fly a drone I can't afford😮. It has an even greater camera with raw capture and full manual controls if you want them but moustache distortion so next to unusable for my favourite subjects unless I can find a way to correct it. If it doesn't work out I can still use the 4S.

Link | Posted on Aug 12, 2017 at 11:21 UTC as 3rd comment

Jupiter looks like a ball of marble or maybe intarsia from two different sorts of marble or a detail of a wall painting from a baroque church. Actually it's an alien spaceship. You have all seen those round portholes in a neat row around it's "waist"? So fake news.

Link | Posted on Jul 14, 2017 at 18:27 UTC as 20th comment
In reply to:

Sergey Borachev: I can tell you the results are not going to be great. This adapter uses a lens or lenses to enlarge, rather than concentrate as done by Speed Booster, the image circle to provide a bigger image necessary to allow shifting. That means loss of quality and resolution. A very high quality lens will be necessary to minimise such loss.

The example, 12mm to 17mm, shows a 1.42 enlargement, which seems quite significant. There will be further image degradation, the amount depending on quality of the optics in the adapter. No magic here. I think there will be a corresponding decrease in light, ie possible a loss of a stop, which can further degrade the image.

It will be interesting to see how much you can gain from using this, instead of just taking the shot with that same 12mm lens and cropping.

🤔

Other lenses not designed to be shifted may have curvature of field, uneven resolution across the frame, CA and vignetting causing further magnified issues in quality.

No, it's meant to be used with "Canon and Nikon mount lenses" but works"specifically well" with the Laowa 12mm.

Link | Posted on Jul 12, 2017 at 09:18 UTC
In reply to:

DoubleDash: I wonder what this does to your IQ. We'll have to wait and see reviews.

What suprises me is that there is no E-mount to E-mount offering. I would like this piece of gear as an add-on for my e-mount lenses

Of course the optics would be different but there are already adapters that stretch the distance between flange and focus plane. Any particular reason the spreading and stretching couldn't be combined?

Link | Posted on Jul 11, 2017 at 19:51 UTC
In reply to:

Christop82: For the uninformed left.
Islam is the second largest religion in India, with 14.2% of the country's population or roughly 172 million people identifying as adherents of Islam (2011 census). ... Cheraman Juma Masjid in Kerala is thought to be the first mosque in India, built in 629 AD by Malik lbn Dinar. Wikipedia

This inattentive leftist didn't notice the article mentioned Islam as the root cause of the plight of Indian women. That would be great news as it would involve only a minority. Unfortunately I can't believe it.

Link | Posted on Jul 11, 2017 at 18:20 UTC

Hard to imagine a better way to use a camera.

Link | Posted on Jul 11, 2017 at 18:11 UTC as 3rd comment

The Philadelphia 1962 photo is superb. No idea if it's a montage or what. Reminds me of Fan Ho's Hong Kong work.

Link | Posted on Jul 11, 2017 at 07:42 UTC as 1st comment
In reply to:

PLShutterbug: Why a 43mm filter on one lens but 46mm on the other? I'd like to see third parties at least have their own internal standard for thread-mount sizes. As a long-time Nikon shooter I always appreciated that a huge amount of their glass <=135mm was all 52mm. Others didn't seem to be as consistent.

I have step up rings that make all my lenses 52mm. Cost about 1€ a piece.

Link | Posted on Jul 11, 2017 at 07:35 UTC
On article Leica TL2 first impressions (369 comments in total)

I misread the upper right icon as a knife and fork. Why not add a lunchtime app that detects nearby restaurants at the assigned moment. Priority given to fine dining in the case of Leica owners, i suppose. Ok, your phone would do that. Leica-Michelin restaurants deals/discounts? Maybe a jitter sensor that detects when blood sugar level gets low?

Link | Posted on Jul 11, 2017 at 07:16 UTC as 28th comment | 1 reply
In reply to:

Sergey Borachev: I can tell you the results are not going to be great. This adapter uses a lens or lenses to enlarge, rather than concentrate as done by Speed Booster, the image circle to provide a bigger image necessary to allow shifting. That means loss of quality and resolution. A very high quality lens will be necessary to minimise such loss.

The example, 12mm to 17mm, shows a 1.42 enlargement, which seems quite significant. There will be further image degradation, the amount depending on quality of the optics in the adapter. No magic here. I think there will be a corresponding decrease in light, ie possible a loss of a stop, which can further degrade the image.

It will be interesting to see how much you can gain from using this, instead of just taking the shot with that same 12mm lens and cropping.

🤔

Other lenses not designed to be shifted may have curvature of field, uneven resolution across the frame, CA and vignetting causing further magnified issues in quality.

I agree with your analysis and suspect the results will differ very much with different lenses. Will nonetheless be very interesting to see some tests.

Link | Posted on Jul 11, 2017 at 07:01 UTC
In reply to:

Indohydra: question...I know this will enrage some architectural professionals...but why not use the capabilities of Adobe Photoshop to correct for tilt ?

The answers you got pretty much nailed it (and nobody was enraged:-). DPR pretty well demonstrated in their Canon 17mm TS test that it gives better definition than keystoning in Photoshop. Whether the difference is enough to justify the expense is up to you. For most of us amateur architectural photographers the question is moot since we simply can't afford one. Therefore we have to revert to tricks like cropping or keystoning in PP or shift adapters with larger format lenses. This adapter is very welcome as it enables lenses of the same format to be shifted. At least as an experiment. I am probably with the majority suspecting the optics involved will deteriorate IS enough to destroy any IQ advantage compared to PP. But there is still wysiwyg.

Link | Posted on Jul 11, 2017 at 06:52 UTC
In reply to:

DoubleDash: I wonder what this does to your IQ. We'll have to wait and see reviews.

What suprises me is that there is no E-mount to E-mount offering. I would like this piece of gear as an add-on for my e-mount lenses

This adapter already does some optical acrobatics (widens the image circle without shifting plane of focus) so not sure an E to E adapter would be much worse or more difficult to make.

Link | Posted on Jul 11, 2017 at 06:36 UTC
In reply to:

rurikw: An alternative to keystoning or cropping or using medium format lenses with a glassless shift adapter. Not sure how enthusiastic to get about it but all for choice and variety so let's give it a chance.

Right. MF glass doesn't go very wide. 35mm? Not sure. Actually remember seeing a LF lens of 35mm. Rodenstock or Schneider-Kreuznach (love those names). What i mentioned are all cheaper but more or less limited alternatives to the best and most expensive solution: adapt a FF TS lens. I tried a shift adapter + Samyang 14mm on M43. Everything worked perfectly except the lens (specimen) wasn't up to snuff. The glass is the bottleneck.

Link | Posted on Jul 11, 2017 at 06:21 UTC
In reply to:

mezastel: What would be really great to see is pictures of MS Estonia, the ship that sank in 1994 under mysterious circumstances and where some of the survivors subsequently dissappeared.

Yes, the contradictions and possible disappearances are disturbing. Wonder how weak an explosion would have been detected by seismographs. But it's a grave so shouldn't be disturbed.

Link | Posted on Jul 10, 2017 at 16:53 UTC

An alternative to keystoning or cropping or using medium format lenses with a glassless shift adapter. Not sure how enthusiastic to get about it but all for choice and variety so let's give it a chance.

Link | Posted on Jul 10, 2017 at 16:40 UTC as 16th comment | 2 replies
On article Leica TL2 first impressions (369 comments in total)

Is this the first "real" camera with a smartphone type interface? Surprised Leica did it or rather that nobody else did it first. Kudos.

Link | Posted on Jul 10, 2017 at 14:35 UTC as 58th comment | 5 replies
In reply to:

EskeRahn: I think the best thing to do about stuff like this would be to implement a system where all aircrafts had a small transmitter, and then require all drones to be equipped with a system that forced them to ground if they ever got within say 200m. And also have all landing sites treated as surrounded by a virtual wall.

Similarly it would be great if all emergency vehicles got at sender, keeping the drones away. The same signals could be used by phones&phablets to issue a warning sound during phone calls, and mute any audio play (car radios too), to get people paying attention. A modern car is often so sound insulated that you only hear the siren when it is really close, especially if music is playing.

Great idea, I hope something like that can be implemented ASAP. It's in the interest of us aspiring drone-flyers.

Link | Posted on Jul 6, 2017 at 10:30 UTC

The ~50% increase in sensor area over M43 was a pretty significant technical achievement???! Besides, isn't it close to 100%?

Link | Posted on Jul 6, 2017 at 10:17 UTC as 65th comment | 3 replies
In reply to:

PhotoUniverse: Ghana?

Wonder why they didn't say where in Ghana. Secret? Not Accra? Some village? Some beach? That would be nice. Hope this is a growing trend. Companies launching products in surprising locations. You never know where they might pop up.

Link | Posted on Jul 6, 2017 at 10:02 UTC
In reply to:

AbrasiveReducer: I love how the box looks like its been on the shelf since Sputnik. Russian film has always had the coolest packaging.

Yes, loveliest retro design I've seen.

Link | Posted on Jul 5, 2017 at 17:31 UTC
Total: 163, showing: 1 – 20
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