SimenO1

Joined on Oct 13, 2011

Comments

Total: 492, showing: 1 – 20
« First‹ Previous12345Next ›Last »

Contrary to other manufacturers Irix presents price right from the start. thumbup! They also present weight on their home page (contrary to Sigmas new 24-70).

Link | Posted on Feb 21, 2017 at 12:44 UTC as 4th comment
In reply to:

iudex: Great to see a third party manufacturer producing also K-mount lenses. Since Pentax has actually not a single FF wideangle prime (the widest Pentax prime is 31mm, which even cannot be described as wideangle) I believe a lot of Pentax K-1 owners will buy Irix, either the older 15mm or this new 11mm.
Kudos to Irix!

DPPMetro: Pentax announced 5 new FF lenses this year, one wide angle, one ultra wide angle, one large aperture normal prime, and a fisheye zoom. That should answer much of what you miss.

3. party lens support is not shrinking as in a continous motion. It took one step back, and I hope Sigma will take that step forward again.

Link | Posted on Feb 21, 2017 at 12:26 UTC
On article OPPO to announce 5x zoom smartphone technology at MWC (56 comments in total)

5x zoom or 5x crop&resize?

Link | Posted on Feb 21, 2017 at 11:11 UTC as 1st comment
In reply to:

cosinaphile: i wish they would support pentax

@phoenix15: I think Pentax are maintaining their lens selection quite well, especially considering their market share. Canon have had quite long renewal cycles on some of their lenses. For example the two 50 primes.

Link | Posted on Feb 21, 2017 at 11:08 UTC
In reply to:

cosinaphile: i wish they would support pentax

@iudex: My main problem with the Pentax 24-70 is the price, size and weight. It doesnt look like Sigma will be much better on those things. Pentax used to offer great quality at low weight like their limited series, but now it seems the focus have turned towards winning technical test chart tests. I would like more focus on weight and price. The new Sigma 100-400 looks good in that regard.

Link | Posted on Feb 21, 2017 at 11:04 UTC
In reply to:

stfn: 14mm f/1.8

For great photos in very narrow darkrooms.

Great for northern lights. For astrophoto and starry landscapes I think tracking and stacking are better techniques.

Link | Posted on Feb 21, 2017 at 10:51 UTC
On article Sony FE 100mm F2.8 STF bokeh demystified (328 comments in total)
In reply to:

SimenO1: I cant make up my mind about what I like best. STF or not. Its very situation dependent. But I don't want to shell out for two very similar lenses ether, so how close to the SFT effect can I get with a similar radial graded ND filter? (I would like to literally screw on and off the STF effect)

Thanks, but not all lenses have bokeh vignetting. How will a radial ND screw on filter look like on a lens that do not bokeh vignett? How does the distance from the diaphragm impact on such a lens?

Link | Posted on Feb 18, 2017 at 18:31 UTC
On article Sony FE 100mm F2.8 STF bokeh demystified (328 comments in total)

I cant make up my mind about what I like best. STF or not. Its very situation dependent. But I don't want to shell out for two very similar lenses ether, so how close to the SFT effect can I get with a similar radial graded ND filter? (I would like to literally screw on and off the STF effect)

Link | Posted on Feb 17, 2017 at 21:52 UTC as 51st comment | 3 replies

With a crop factor of 7,21, the f/1,8 aperture equals f/13 on full frame.

Link | Posted on Feb 2, 2017 at 09:08 UTC as 11th comment | 1 reply
In reply to:

SimenO1: Why are so many drones based on the battery inefficient multicopter-design, when an airplane-based design would offer so much smoother glide, less noise and longer battery time?

But you realize that last option (stationary) is a large compromise to flight time?

That compromise is like comparing a set of good primes and 2x-3x zooms to a single 15x superzoom and concluding that the superzoom is the best lens because its a all-in-one. Jack of all trades - master of none.

Sure it might be best for some, but I just wonder why almost all drones play the versatility card.. To mee, multicopters are far overrated and winged drones far underappreciated.

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

SimenO1: Why are so many drones based on the battery inefficient multicopter-design, when an airplane-based design would offer so much smoother glide, less noise and longer battery time?

Have you seen the guitar solo scene in Guns n roses - November rain? Or Pink floyd - Learning to fly? How would those videos look with a stationary surveillance cam view?

Link | Posted on Jan 28, 2017 at 23:19 UTC
In reply to:

SimenO1: Why are so many drones based on the battery inefficient multicopter-design, when an airplane-based design would offer so much smoother glide, less noise and longer battery time?

As a viewer, what do you think feels most natural: A view like a surveillance camera from the top of a flag pole, or like being a bird, moving your head to look around as you fly?

Why does Mavic and other drones have an orbit function if stationary view looks so good?

Do you understand what I mean by stationary boring now?

Link | Posted on Jan 28, 2017 at 23:10 UTC
In reply to:

SimenO1: Why are so many drones based on the battery inefficient multicopter-design, when an airplane-based design would offer so much smoother glide, less noise and longer battery time?

Stationary is boring in my opinion. I would easily trade stationarity for flight time. Is there really so few people that prioritize like me or is it just the low availability of winged drones that forces people to choose multicopters in stead?

Link | Posted on Jan 28, 2017 at 16:06 UTC

Why are so many drones based on the battery inefficient multicopter-design, when an airplane-based design would offer so much smoother glide, less noise and longer battery time?

Link | Posted on Jan 28, 2017 at 13:31 UTC as 14th comment | 10 replies
On article TwoEyes VR stereoscopic camera simulates human vision (51 comments in total)
In reply to:

winkalman: I think they're about 7 years late...

https://www.engadget.com/2009/01/05/minoru-3d-webcam-ships-this-week-still-looks-freaky/

I love my old Fuji Real3D W3, and use it now and then, last time two weeks ago at a birthday party. But with its weak CCD sensors, only 720p and slow auto parallax, I hope Ricoh will launch a dual Theta that can replace it and add so much more, like 360VR.

Link | Posted on Jan 20, 2017 at 22:59 UTC
In reply to:

falconeyes: Everybody seems to accept that US (NSA) intercepts our private data.
Now with China though, it's a different thing ...
Dear American fellows, Welcome to the world of the rest of us ;)

Very true. US cyber espionage and attacks are very worrying in a global perspective. I just saw the new Stuxnet documentary "Zero days". Recommended! For people with Norwegian IP or proxy: It's available for free at tv.nrk.no

Link | Posted on Jan 20, 2017 at 12:54 UTC

Cool! This is the smallest semi-available full frame lens I have ever seen. There is smaller and more available lenses for system cameras, but all of them are for smaller formats. The smallest lens I know, regardless of sensor size, is the Pentax mount shield lens that weighs in at only 8 grams and is 7 mm long, 41mm diameter and has only a single lens element. Other specs are 2,6 mm f/9 (both real) and in FF equivalency 12mm f/40.

Here are a collection of other sub-50g lenses:
https://www.dpreview.com/products/compare/side-by-side?products=pentax_xs_40_2&products=oly_m_15_8&products=olympus_m_9_8&products=pentax_q_01&products=pentax_q_03&products=pentax_q_04&products=pentax_q_05&products=pentax_q_07&sortDir=ascending

Link | Posted on Jan 16, 2017 at 20:20 UTC as 12th comment | 1 reply
In reply to:

Mike FL: I'm not sure "four elements in four groups" is good enough for this kind of FL.

Rokinon 10mm for sub-frame lens has 14 elements for example.

A prime lens optimized for use around f/8 doesn't need much correction to give decent image quality in the center region.

Link | Posted on Jan 16, 2017 at 20:01 UTC
In reply to:

SimenO1: Advantages of in camera DNG:

- Saves the conversion step in post processing

- Bypassing a proprietary format makes the files more avaliable for unusual software

- Bypassing a proprietary format potentially reduces software cost (licensing)

- We don't have to wait for software updates to support raw files from a newly launched camera

In fact, Canon should have made DNG an optional raw format long time ago, just like Pentax, Leica and a few others.

@dtibi: Please Don't call snap-shooters photographers. And it doesn't take away the advantages I mentioned for us who are.
@itguy08: There is no doubt DNG supports more OSes and more software then proprietary raw formats, even if you count dcraw.

Link | Posted on Jan 3, 2017 at 23:39 UTC

Advantages of in camera DNG:

- Saves the conversion step in post processing

- Bypassing a proprietary format makes the files more avaliable for unusual software

- Bypassing a proprietary format potentially reduces software cost (licensing)

- We don't have to wait for software updates to support raw files from a newly launched camera

In fact, Canon should have made DNG an optional raw format long time ago, just like Pentax, Leica and a few others.

Link | Posted on Jan 3, 2017 at 21:10 UTC as 19th comment | 12 replies
Total: 492, showing: 1 – 20
« First‹ Previous12345Next ›Last »