amweber21

Lives in United States United States
Works as a Photographer
Joined on Jan 10, 2012

Comments

Total: 69, showing: 1 – 20
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On article Sigma fp L initial review (619 comments in total)
In reply to:

jonby: I guess it remains to be seen whether this will find its niche. Much as I like Sigma as a company, and appreciate their desire to innovate and explore new avenues in camera design, I'm still struggling to see many cases where this would seem to be a good choice. I could see the appeal of the Merrils, and thought they could have refined that concept further, but I'm a bit lost with this one.

I think size, weight and modularity are the real strong points. Not only for the camera alone, but a full setup. I can make a FF raw capable handheld rig minus lens at less than 600g. The next closest I can come up with is about 1200g. Quite the difference in weight for handheld or gimbal use, and much cheaper when an expensive recorder is not required to purchase. Some, like myself, also still prefer cinemaDNG to Prores raw or Braw. It can be even lighter still if using 8bit internal raw. For stills it's something similar, but basically you build it or strip it down to what the situation requires. It might not be a "do it all" camera, but it's a good companion if you already have an existing larger setup.

Link | Posted on Jul 16, 2021 at 13:26 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

amweber21: It should be mentioned that the line-skipping in 12bit cinemaDNG only occurs between 1.0-1.24x crops. From 1.30x crop and on it will read the full area and have the resolution of 10/8bit (with the increased rolling shutter).

I don't think there is a mention of this in the manual, although most leave technical things like that out of manuals. Sigma engineers have touched on it in multiple interviews, and I can confirm with my own testing. I do wish, however, they would release a chart diagram or something official. That said, the 1.0x-1.24x 12bit line-skipping is about the only noticeable effect in 4K. It is a limitation in the read-off speed of Sony's senor, so it is nothing Sigma could have overcome.

Link | Posted on Jul 16, 2021 at 12:59 UTC
On article Sigma fp L initial review (619 comments in total)

It should be mentioned that the line-skipping in 12bit cinemaDNG only occurs between 1.0-1.24x crops. From 1.30x crop and on it will read the full area and have the resolution of 10/8bit (with the increased rolling shutter).

Link | Posted on Jul 15, 2021 at 15:34 UTC as 32nd comment | 11 replies
On article DPReview TV: Panasonic Leica 25-50mm F1.7 review (55 comments in total)
In reply to:

4sofnature: It's still much cheaper to achieve the equivalent range/DOF on larger sensor, for example, Tamron 35-150 2.8-4, Sigma 50-100 1.8. If on budget, I'd adapt those lenses onto M43 bodies.

It's still much cheaper to achieve the equivalent range/exposure on a M43 sensor.

Link | Posted on Jul 8, 2021 at 13:52 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

I would agree with you. After some years so-so evfs, Leica introduced the Leica Q with a 3.69M evf, and shortly after the SL with 4.4M 60hz panel in 2015. I feel this combination of resolution and refresh rate is where evfs started to become decent, even today.

Link | Posted on Jun 25, 2021 at 16:12 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

I doubt it. They clearly state, if you've looked at what they said, that they were comparing all 4 lens mounts that they have been covering in detail in the article. It is hard to be general and specific at the same time.
Considering they never actually mentioned when the FF L-mount system was introduced, it is more likely they overlooked this rather than intentionally omitting it.
Anyway, generalizations aren't very effective when making direct comparisons of factual information. Facts usually work better.

Link | Posted on Jun 24, 2021 at 13:29 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

Good. We're clear that it's not only Sony, Canon, and Nikon.

Link | Posted on Jun 23, 2021 at 14:23 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

"As you'd expect, Sony's nearly five-year head start and openness towards third-party makers has let it build up a significant advantage over its rivals, but all four mounts are already starting to see key holes in their respective lineups being filled."

Doesn't say Canon and Nikon. In the same sentence it says "its rivals" and "all four mounts". There seems to be a mount unaccounted for or does one of them use two mounts for their full frame system?

Link | Posted on Jun 23, 2021 at 14:09 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

tbcass: "The viewfinder will cost $699 if purchased on its own, but only adds $500 to the cost of the camera when bought as a kit."

"Only $500". LOL. What's it worth? $50?

I haven't made an apology. I guess you can call me a observationalist as it's just the principle of how producing goods works. There's a reason certain products cost less. Sigma makes some of the most reasonably priced photography equipment for the quality offered. They could definitely make a pathetic rx100 evf for super cheap but I'm happy they don't.

The made it optional so you don't have to get it. I didn't.

Link | Posted on Jun 16, 2021 at 16:03 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

forest dream: Sigma should release Sigma fp which :
1. 12MP full frame stacked sensor with faster readout speed so that electronic shutter no rolling issue.
2. Support 4K 120 fps.
3. Built-in electronic variable graduated ND filter (optical). Since 12MP sensor's larger pixel has better low light performance, the ND filter can always on with lowest setting, ND no need mechanical part change ND to clear filter. Can achieve built-in ND in compact body.
4. Above graduated ND filter auto mode which can auto normalize (AI) light for properly exposed.

3&4. Variable NDs do not have a clear setting. They still need to be movable. Most run a 1-5 stop or 2-7 stop (like the fs5) so without moving it you would always have a fixed ND in front of the sensor even on the lowest setting. Not practical inside or for lower light. Making it moveable would need a full redesign to fit the moveable filters. It would be much larger.

Link | Posted on Jun 16, 2021 at 14:38 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

forest dream: Sigma should release Sigma fp which :
1. 12MP full frame stacked sensor with faster readout speed so that electronic shutter no rolling issue.
2. Support 4K 120 fps.
3. Built-in electronic variable graduated ND filter (optical). Since 12MP sensor's larger pixel has better low light performance, the ND filter can always on with lowest setting, ND no need mechanical part change ND to clear filter. Can achieve built-in ND in compact body.
4. Above graduated ND filter auto mode which can auto normalize (AI) light for properly exposed.

The issues with a model such as this is a stacked sensor would cost significantly more than a traditional sensor increasing the price of the camera. Sigma's strategy is a compact, lower cost model. Creating it the same price or more expensive than other models probably won't get anyone else on board as it still lacks features that many may want.
1. It solves the problem of flash sync and rolling shutter, but with the fp models limited buffer and C-AF it doesn't take much other advantages of the stacked sensor's features. Image quality would remain the same as a non-stacked sensor in other modes, and 12MP would push it to a mostly video only camera like the A7S models.
2. 4K120p would be limited to internal, and maybe certain external recorders. It's biggest video feature is cinemaDNG, and 4K120p is simply not going to work with current SSDs. The bandwidth is way to high. Mostly all drives couldn't record the sustained 1500MB/s needed.

Link | Posted on Jun 16, 2021 at 14:38 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

tbcass: "The viewfinder will cost $699 if purchased on its own, but only adds $500 to the cost of the camera when bought as a kit."

"Only $500". LOL. What's it worth? $50?

What's unreasonable is to act like all EVFs are the same. The Canon M6ii evf is a 0.39" 2.36M 0.63x EVF comparable to what is inside the A7C, which isn't seen as a great viewfinder by most. The Sigma EVF-11 is a 0.5" 3.69M 0.83x EVF similar to what inside the Lumix G9, which has always been acknowledged as a great EVF. As with most electronical things, better quality costs more.

Link | Posted on Jun 16, 2021 at 14:10 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

FuhTeng: huh. Anyone else see more detail with the Z7 II (which is right with a7R IV) than the higher MP sigma? Interesting. For example the little colored floof balls to the left, and then it just gets more pronounced the farther from center you get?

I expect that's due to the lenses used, but at f/5.6 I'm surprised I see more with the Nikon as I'd expect the very expensive L mount lens to be at least as good.

Maybe it's field curvature?

I don't believe that is what's going on here. There are inconsistencies across the frame. As stated in the article, the Canon R5 also has an AA filter.

Link | Posted on Jun 15, 2021 at 22:53 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

FuhTeng: huh. Anyone else see more detail with the Z7 II (which is right with a7R IV) than the higher MP sigma? Interesting. For example the little colored floof balls to the left, and then it just gets more pronounced the farther from center you get?

I expect that's due to the lenses used, but at f/5.6 I'm surprised I see more with the Nikon as I'd expect the very expensive L mount lens to be at least as good.

Maybe it's field curvature?

Yes, click the small "i" under the preview screen. The Lumix 50mm 1.4 S Pro lens was used. A lens that has more than enough resolving power.

Link | Posted on Jun 15, 2021 at 19:02 UTC
On article Sigma fp L initial review (619 comments in total)
In reply to:

FuhTeng: huh. Anyone else see more detail with the Z7 II (which is right with a7R IV) than the higher MP sigma? Interesting. For example the little colored floof balls to the left, and then it just gets more pronounced the farther from center you get?

I expect that's due to the lenses used, but at f/5.6 I'm surprised I see more with the Nikon as I'd expect the very expensive L mount lens to be at least as good.

Maybe it's field curvature?

Yes, there is definitely something off, I'm not sure if something is misaligned, but it gets worse towards the bottom. The text on the honey vinegar appears out of focus, and not a lack of detail.

Link | Posted on Jun 15, 2021 at 16:13 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

Yes, you successfully succeeded in answering my rhetorical question, in which I sarcastically answer that it is incorrect, as Leica introduced their camera 2 years after Sony. The only break away from an impartial treatment of statistics was when facts are disregarded and personal opinions ("...that, to me, renders it as insignificant") are used instead. If Leica is not eligible to be recognized as an active photographic company, I suppose it wouldn't have been included. Since the title does not specify it is only talking about "the big three", I suspect some facts were overlooked. As the previous comments already agree to the fact it was released in 2015, the only argument should be directed at the dpreview staff to remove any references to "insignificant brands" from this article.

Link | Posted on Jun 15, 2021 at 01:05 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

Okay, I think I get it now. So in order to keep the statistical process fair, we include them in said comparison but discredit their achievement based on their size and monetary value in relation to the rest of the world? Seems to make sense.

Link | Posted on Jun 14, 2021 at 20:08 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)
In reply to:

amweber21: Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

Who makes the choice on what is significant or not if we are comparing all the FF mirrorless systems? If we can choose to leave out an entire company, could we just leave out Sony and say that more or less all companies are par for the course?

Link | Posted on Jun 14, 2021 at 18:26 UTC
On article Full-frame mirrorless lens guide 2021 (1817 comments in total)

Sony's five year head start on who? All the other systems came out in 2018? Leica SL was introduced in 2015, for instance.

Link | Posted on Jun 14, 2021 at 17:28 UTC as 110th comment | 15 replies
In reply to:

(unknown member): Pixels pixels pixels is all we hear about. What we need is more usability, better ergonomics and durability. My dream is a camcorder body form instead of an SLR from 1960.
More dynamic range would be nice though. That would bring us closer to replicating our natural vision.

They still make camcorders

Link | Posted on May 25, 2021 at 15:50 UTC
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