viking79

viking79

Lives in United States Marion, IA, United States
Works as a Software Engineer
Has a website at http://viking79.zenfolio.com
Joined on Nov 27, 2007

Comments

Total: 655, showing: 1 – 20
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On Making 'Art': We go inside Sigma's lens factory article (190 comments in total)
In reply to:

FamlilyPhotographer: The optical quality is awesome...but the weight is damn heavy....i cant travel w 35 art and 50 art anymore :((
make it lighter plzzzz

Yeah, but the same is true for focal length (it is fixed parameter of lens). Aperture is meaningless without some accompanying information, like field of view and focal length. If used on APS-C the two would be identical in terms of focal length/aperture, but one is a lot larger because it is designed to cover a full frame image circle and designed to do it very well.

The Fuji is much smaller in part because of the APS-C sensor, but also because they can put it much closer to the sensor. A full frame camera would use a 50mm f/2 in order to be equivalent, and that would be a smaller lens on the full frame camera.

Granted, it would be silly to get the ART 35mm f/1.4 for a Fuji X series camera when the Fuji 35mm f/1.4 is pretty great by f/2 and much smaller and autofocus.

Direct link | Posted on Mar 10, 2015 at 14:30 UTC
On Making 'Art': We go inside Sigma's lens factory article (190 comments in total)

Great story, and well worth the read. Thanks for documenting it.

Direct link | Posted on Mar 9, 2015 at 15:31 UTC as 57th comment
In reply to:

Beckler8: I'm disappointed the 24-240 isn't a power zoom lens. This reduces its versatility as a video lens.

If past releases are indicators of future, they will have no less than 5 super zooms for the A7 within 2 years, all slightly different and no idea which is which. ;)

Direct link | Posted on Mar 4, 2015 at 16:52 UTC

The price is normal for a 10x or so zoom range name brand full frame lens. Remember, full frame has about 1 1/3 stops advantage meaning this lens should cost significantly more than a 10x APS-C zoom, and even more than a m4/3 superzoom. Nikkor 28-300mm is about the same, but this is the first 10x I have seen which goes to 24mm on full frame (I imagine thanks to heavy software corrections). Who knows, maybe it will perform better than the ZEISS 24-70mm, it honestly wouldn't surprise me if it does as well (the bar is pretty low).

Direct link | Posted on Mar 4, 2015 at 14:37 UTC as 13th comment
On Nikon D7200 First Impressions Review preview (827 comments in total)
In reply to:

Scottelly: Well it's ABOUT TIME! At least Nikon FINALLY did it . . . made a camera that can follow the D300s with a reasonable size buffer and good, professional level features.

Still . . . now they need a D400 that features faster shooting speed. 6 fps just isn't up to snuff. They need to introduce an 8 fps D400 with an even bigger buffer, 4K video capability, and everything that this camera has . . . but with UHS-II memory card slots, so the buffer will empty in just 10 or 15 seconds, rather than the 30 seconds it will take to empty the buffer of this camera. They could include GPS to help differentiate it from this camera even more.

This D7200 will sell well though. That bigger buffer is a major selling point. (The most important upgrade they put into this camera, as far as I'm concerned.) This is a camera that I'd consider buying . . . but I'd rather get a D400 with an even bigger buffer, more fps, and faster memory card slots. I'd pay $300 more for an upgrade like THAT . . . maybe more.

And to think, it only took them two years to install a larger RAM. What, do they have 1 engineer working on the camera half time?

Eric

Direct link | Posted on Mar 3, 2015 at 19:55 UTC
On Nikon D7200 First Impressions Review preview (827 comments in total)
In reply to:

fakuryu: What is it with all the negativity on this camera? It has the same AF of the D750 which is rated to be better than the D810 and D4S and finally a deeper buffer.

Aside from a bit slower burst rate, just give this thing a magnesium body and you can call this a D400

The negativity comes from people hoping for a revolutionary upgrade. In 4.5 years they basically have a camera only slightly better than the D7000 and in 2 years they basically do a buffer upgrade and some other small stuff. That is all fine and dandy if the market had been sitting still for the last 4 years, which it has not been. The D7000 was an amazing camera value when it was launched, not so much any more.

WiFi in APS-C cameras started 3 or 4 years ago, and Nikon is just now integrating it. With 4k video, that has been in the last year, but here we have a D7200 with no 4k video, that means no update for another 2 years. Granted they might release something else in that time, like maybe a different model with 4k, but Nikon went from being the first good about $1000 camera with video (Nikon D90), to lagging behind the competition.

Eric

Direct link | Posted on Mar 3, 2015 at 19:48 UTC
On Nikon D7200 First Impressions Review preview (827 comments in total)
In reply to:

MylesP: Since a lot of people use the D7100 as a wildlife shooter I was really hoping Nikon would please the crowd and surprise us with an AF-ON button. Even a tilted screen would have been nice. Just *something* above and beyond the absolute bare minimum they could do while still calling it a new model.

They didn't even do that for their D750... you give Nikon too much credit :)

Direct link | Posted on Mar 3, 2015 at 19:39 UTC
On Nikon D7200 First Impressions Review preview (827 comments in total)
In reply to:

Papi61: No 4K video. Considering it's 2015, that's going to be a serious dealbreaker for a lot of people...

I am split on this, I tried to play 4k video on my 3 year old iMac and it can't do it. However, the monitor isn't 4k anyway. What is amazing about 4k is I can get an 8 MP still image pulled straight from the video of pretty high quality, and it wasn't that long ago that DSLR cameras were only 6 MP, and honestly most people wouldn't notice if you snuck in a 6 MP sensor in place of their 28 MP sensor. I agree, should be a standard feature, especially if going for video users.

Direct link | Posted on Mar 3, 2015 at 19:36 UTC

Now that is a good looking phone! I will take the Edge please. :)

Direct link | Posted on Mar 2, 2015 at 19:48 UTC as 3rd comment | 15 replies
On Sony Alpha 7S Review preview (467 comments in total)
In reply to:

HowaboutRAW: "Unless you fall into a very small niche of users that absolutely require a fully electronic shutter, silent shooting mode (which does have some noise implications,"

That's an understatement.

The noise different is big.

I we talking image mottling/noise or audible noise?

Biggest issue I see with silent shutter is that you get artifacts from the very slow sync speed, get rolling shutter artifacts with even slowly moving subjects or cycling lights.

Direct link | Posted on Mar 2, 2015 at 16:31 UTC
In reply to:

Yxa: Why is it called Super 35 its smaller than the still 35mm
It should be called sub par 35 (that would be more true)

Yxa, it is a video camera, since film runs vertically through the camera you get smaller frames than 35mm stills. A link to fractional sensor sizes has nothing to do with Super 35mm, which uses APS-C for the reasons Zorgon mentioned.

Direct link | Posted on Feb 24, 2015 at 13:54 UTC
On More things we found cut in half (CP+ 2015 edition) article (139 comments in total)

Great shots! I love the cut in half Otus lens, interesting because it is actually entirely metal. Even the best mass production lenses use a large amount of plastic. The 'samich' made me jump as I was expecting another lens. Nice one, looks delicious :)

Direct link | Posted on Feb 15, 2015 at 19:32 UTC as 36th comment | 1 reply
In reply to:

Rooru S: E-mount philosophy totally defeated. The SEL35F28Z and SEL55F18Z are great lenses, with good quality and good size. So far the only good ''new'' lens is the SEL28F20. But I don't get why a 35mm F1.4 has to be so big. I'm quite sure if they tried something like Voigtlander 35mm f1.4 with slightly better optics and a servo motor moving the MF ring and make a new housing for it we could still get a smaller package.

Unless the 35mm f1.4 has excellent corner to corner sharpness wide open, I don't get the size...

The macro on the other hand...if it doesn't extend, that's a good point. But the size doesn't help too much.

JACS, it doesn't have to have built in adapter. For good corners you need image space telecentric lens. The rear lens element ideally needs to be larger than the image sensor in this case. Placement might be almost touching the sensor in a fixed lens camera (Sony RX1 for example).

There doesn't need to be an air gap there as there must be on an SLR. It just so happens that the Sony uses one, probably to make the rear element larger because the throat opening of E mount is smaller than it should be. To make the element large enough for performance they have to put it out to make room for mount and finger clearance (Sony has the mount very close to grip and can't hold camera without that gap there).

Direct link | Posted on Feb 13, 2015 at 18:34 UTC
In reply to:

mosc: So they release an IBIS body and now they want to sell you a bunch of giant OSS lenses for it?

Double IS is extremely bad. They would confuse each other. Thanks nandbytes that it uses IBIS. I wonder what it does with long focal lengths, where OIS would be better regardless (like in 70-200mm).

Direct link | Posted on Feb 13, 2015 at 18:31 UTC
In reply to:

Lou P Dargent: I like the A7, but that Zeiss 35 f1.4 looks like a DSLR lens + adapter. It is bloody huge. Does it even have OIS?

And no, I'm not getting confused by the small body size of the A7.

It is bigger than this:

http://www.bhphotovideo.com/c/product/735000-USA/Nikon_2198_AF_S_NIKKOR_35mm_f_1_4G.html

35mm is roughly the distance from the tip of his thumb to the knuckle.

I know that you can't make a direct correlation between focal length and lens size, but that monster is almost as big as my Nikkor 180mm f2.8 AI-S boat anchor.

I hope it is about performance. A 35mm f/1.4 lens for full frame mirrorless can be made very small (Cosina Voigtlander 35mm f/1.4 for Leica M is an example), but performance suffers at the corners at large apertures. If this lens isn't excellent in the corners and wide open I don't see it doing that well.

Direct link | Posted on Feb 13, 2015 at 18:29 UTC
In reply to:

Rooru S: E-mount philosophy totally defeated. The SEL35F28Z and SEL55F18Z are great lenses, with good quality and good size. So far the only good ''new'' lens is the SEL28F20. But I don't get why a 35mm F1.4 has to be so big. I'm quite sure if they tried something like Voigtlander 35mm f1.4 with slightly better optics and a servo motor moving the MF ring and make a new housing for it we could still get a smaller package.

Unless the 35mm f1.4 has excellent corner to corner sharpness wide open, I don't get the size...

The macro on the other hand...if it doesn't extend, that's a good point. But the size doesn't help too much.

No it doesn't, the CV 35mm f/1.4 for Leica M is a tiny lens as OP pointed out and is a full frame 35mm f/1.4 with short flange distance. However, the CV 35mm f/1.4 is also not good wide open, especially in the corners. I would expect this design is to improve corner and wide open performancing making it much larger.

Direct link | Posted on Feb 13, 2015 at 15:24 UTC
In reply to:

mosc: So they release an IBIS body and now they want to sell you a bunch of giant OSS lenses for it?

They are a bit confused... :)

Honestly though, the A7II would be a great camera for a legacy lens shooter. It would be perfect with all those Canon FD lenses, etc. It is also meant as an A mount replacement, I think some users didn't want to switch from other A mount cameras to E mount in fear of losing IBIS.

Direct link | Posted on Feb 13, 2015 at 15:23 UTC
On CP+ 2015: Canon shows 11-24mm in cross-section article (63 comments in total)

It always amazes me how complicated modern zoom lenses are, and that they work as well as they do. Beautiful.

Direct link | Posted on Feb 13, 2015 at 05:23 UTC as 23rd comment | 1 reply
On CP+ 2015: Hands-on with new Pentax K-S2 article (195 comments in total)
In reply to:

22codfish: None of the new CaNikons still don't have an ATV shooting mode.

Less the same thing. It is overloading a function and making it is something it is not. Quickly set the camera to manual and forget auto ISO setting and it is crap. On the D7000 for example it was very difficult to change the camera out of auto ISO mode, so it was difficult to shoot in manual. They fixed this on later cameras. Pentax is the only one that gets this right, unfortunately, Canon and Nikon push the terrible auto ISO and manual mode so everyone else thinks that is a good idea.

Direct link | Posted on Feb 13, 2015 at 05:20 UTC
In reply to:

ProfHankD: Well, it's nice to see I'm not the only one 3D printing camera prototypes... but this doesn't give me warm fuzzies about when we'll see the actual product. This reeks of being only a marketing test. Let's hope I'm wrong. ;-)

It is a good commitment from Ricoh saying give us this chance before you leave to shoot an A7R, D750, or one of the other great full frame cameras available. Their base eroded quite a bit under Hoya, nice to see Ricoh stepping up.

Direct link | Posted on Feb 13, 2015 at 05:11 UTC
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