HFLM

Joined on Nov 5, 2013

Comments

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In reply to:

David610: For those suggesting the sample images are soft ... All the pictures in this gallery were shot at F8 and F11. At this setting, a FF sensor is limited by diffraction to 22mp green light and much lower for red light @13mp. I think a Panasonic Lumix DC-S1 (24mp) should have been used to take the sample images.

First: the images are a bit soft compared to other lenses at similar apertures. There is no way to deny that. Additionally, your diffraction arguments are misleading. It depends on various assumption (e.g. MTF at 9% or 50%, 2 or 4 pixels/Airy disk, i.e. monchrome or Bayer sensors, etc.), see
https://www2.uned.es/personal/rosuna/resources/photography/Diffraction/Do%20sensors%20outresolve.pdf

So, based on this, neglecting lens flaws, the resolution can be clearly higher than your stated numbers.

Link | Posted on Nov 1, 2020 at 09:05 UTC
On article Sigma 35mm F1.2 DG DN Art sample gallery (235 comments in total)
In reply to:

Jack Jian: While it's very sharp at f1.2, the images are flat (no micro-contrast) and also have the unique nasty "chicken-skin" texture which most Sigma lenses have, which is very difficult to correct in post. But great that Sigma pushes further!

Jack Jian: What you do is what is called pseudo or fake science. It is always the same with fprime or people like you.

Link | Posted on Aug 24, 2019 at 15:29 UTC
On article Sigma 35mm F1.2 DG DN Art sample gallery (235 comments in total)
In reply to:

Jack Jian: While it's very sharp at f1.2, the images are flat (no micro-contrast) and also have the unique nasty "chicken-skin" texture which most Sigma lenses have, which is very difficult to correct in post. But great that Sigma pushes further!

Define micro-contrast and flat.

Link | Posted on Jul 22, 2019 at 19:44 UTC
In reply to:

BelePhotography: Round head on flash - been around forever.
Fresnel lens - been around forever.
LED modeling light - not only Profoto sports these.
Magnetic mount - not only a Profoto feature.
So what exactly are they sueing for? I get it that it's annoying how fast that the competition catch up when you combine technologies already present in the market. However, unless you truly innovate, that will be the case. Now stop whining and start competing!

Did you ever head a company developing products, paying for patents which aren't related to a simple look-a-like feature? Did you pay for research, marketing etc. before finding out that some of your patents were violated?
Or do you have insight into what is at stake here? Otherwise, this sounds like a pretty stupid comment. In Europe we have lots of problems with Chinese companies violating patents and copying technologies at will, not nice.

Link | Posted on Mar 20, 2019 at 13:37 UTC
In reply to:

GarysInSoCal: Sorry ProFoto... It's too late. Godox has already flooded the market with that V1 light. And yes... I'm quite sure that China doesn't recognize Swedish patents and I'm thinkin 'the statue of limitations' time frame has already passed. You're a day late and a dollar short.

Why is it too late? If the courts side with Profoto, Godox is fined.

Link | Posted on Mar 20, 2019 at 13:32 UTC
In reply to:

KaiZenDon: Then if I were Godox, i would continue making round flashheads.
Heck if this case makes the slightest sense, next time they make a rectangular flashhead, Canon, Nikon, Sony, Minolta, Pentax, Olympus, would be in a long queue to sue, even Vivitar would walk to the courtroom from the graves.

Well, it depends on the patents at hand, right? No patents, no lawsuit.

Link | Posted on Mar 20, 2019 at 13:30 UTC
On article Sony announces FE 135mm F1.8 G Master lens (406 comments in total)
In reply to:

panther fan: Well at least it is somewhat lighter and shorter than the Sigma 135mm F1.8 for E-mount at 950g vs 1225g.
That said this is more in line with the gains of the GM 85mm F1.4 over the Art version than with the GM 24mm F1.4 over the Art version. Which is expected

Sigma E-mount version: 91,4 mm x 140,9 mm, 1,225 kg, 87,5 cm MFD
Sony: 89.5 x 127 mm, 950 g, 70cm MFD.

Not a bad thing.

Link | Posted on Feb 26, 2019 at 15:20 UTC
On article Hands-on with the Canon EOS RP (787 comments in total)
In reply to:

mpb002: Although it is an entry-level body, I bet it is better westher sesled still than the Sony A7 series bodies. It still beats Sony right out of the gate with better ergonomics. I am sure that an experienced shooter will get great results from RAW and the much better color science that Sony sensors regardless of camera price, because great image making after all is not necessarily the camera so much as it is the capability of the person behind the camera.

How do you focus? I only use AFC. No defocus/hunting at all. Almost instantaneous. It is different when in AFS, but I don't use that. AFC is all I need at events and compared to dslrs hit rate and AF accuracy is substantially better, esp. if you focus f1.4 lenses wide open. Using off-center points with dslrs gets you fast into trouble. Not an issue with mirrorless. I think your issues could be when using AFS.

Link | Posted on Feb 17, 2019 at 21:01 UTC
On article Hands-on with the Canon EOS RP (787 comments in total)
In reply to:

mpb002: Although it is an entry-level body, I bet it is better westher sesled still than the Sony A7 series bodies. It still beats Sony right out of the gate with better ergonomics. I am sure that an experienced shooter will get great results from RAW and the much better color science that Sony sensors regardless of camera price, because great image making after all is not necessarily the camera so much as it is the capability of the person behind the camera.

@KEnrique:"Top of the line Canon will also focus way faster and more reliably than the A7RIII does. "
Which do you mean, what do you mean? I used Canon professionally before switching to Sony. None of the Canons I used was able to focus faster and especially not more reliably (comparable bodies are 5d3, 5d4, 5ds), to the contrary. I was very disappointed with 5div focussing accuracy especially. The 1dx2 is faster to focus, no surprise being a sports oriented low MP body, but the 1dx2 clearly trails my A9, in speed and accuracy.
Regarding fragility: The A9/A7r3/A73 take quite a beating at weddings, in terms of weather, bumping around etc. So far, I don't have any complaints, they worked in all situations we threw at it.
I never never would go back to Canon given the experience we have over the last couple of years using Sony, for some time in parallel to Canon gear. Wo we know the difference very well.

Link | Posted on Feb 15, 2019 at 17:47 UTC
On article Hands-on with the Canon EOS RP (787 comments in total)
In reply to:

mpb002: Although it is an entry-level body, I bet it is better westher sesled still than the Sony A7 series bodies. It still beats Sony right out of the gate with better ergonomics. I am sure that an experienced shooter will get great results from RAW and the much better color science that Sony sensors regardless of camera price, because great image making after all is not necessarily the camera so much as it is the capability of the person behind the camera.

Certainly not. Lensrentals looked at the EOS R during its teardown, similar to the Sonys:
https://www.lensrentals.com/blog/2018/10/teardown-of-the-canon-eos-r-mirrorless-camera/

Using them professionally in all kinds of weather, I am pretty confident in my Sonys.

Link | Posted on Feb 14, 2019 at 07:05 UTC
On article Olympus OM-D E-M1X review (2415 comments in total)
In reply to:

Raist3d: Well. So here it is. Pretty much same IQ of the current sensors, 50 MP hand held looks a bit detail lacking (as far as I can see at this site and another).

If we are going to compare this camera with the Nikon D5 and Canon top for sports, it should be mentioned those cameras clearly have much notably better image quality.

Dunno. I think this is not the way to go for the system. Sure, innovative "deep learning" AF (which by the way doesn't mean anything if other cameras can focus well without that)- but to be deployed on a camera that doesn't seem like "so hot' fi you will in a way.

I would have preferred a top pro EM5 MKIII as a new top model, and standard bearer for the system. Cheaper, smaller, top notch.

@Thorgrem: I don't know what you shoot, but have you been in indoor-events, where you have been easily at iso 10000 with an f2.8 FF lens? Now suppose we use the Olympus with an f2.8 lens at iso10000, too, with a sensor having 4 times smaller area and therefore much lower S/N ratio. The difference will surely be visible.

Link | Posted on Jan 24, 2019 at 07:10 UTC
On article Olympus OM-D E-M1X review (2415 comments in total)
In reply to:

yanisha: On the m4/3 forum there is a current poll and already 142 have decided they are certainly buying an E-M1X, out of a total of 517 voters. 28% are buying! That sounds like a roaring success for Olympus! Keep in mind that undoubtedly out of the 7 billion or so people on Earth not all of them have seen this poll and voted. In addition, even all the photographers on Earth have surely not seen it and voted. Going further, not all current m4/3 users have seen it. And stretching even further it is quite reasonable to believe that not even all people who sometimes check out the posts in the dpreview m4/3 forum have seen it. If out of the tiny subset of people on Earth who saw it and voted there are 142 definite buyers this indicates a blockbuster I think.

https://www.dpreview.com/forums/post/62175486

You don't mean that seriously, do you? What kind of flawed logic is this?

Link | Posted on Jan 24, 2019 at 07:06 UTC
In reply to:

panther fan: Currently nobody can beat the A9, simply because of the readout speed.

The real question is when will we see stacked sensors in lower end or other brand cameras?
Sony has an awesome Halo product, but for many it is still too expensive. Please Sony let this tech trickle down

PS: Awesome updates. If you are already expanding JPEG aspect ratios, could you add some more like 5:4 etc...? Please

@vscd: we are in the wedding business and know quite a few personally using the A9.

In sports, the A9 can be seen more and more. Sometimes you see even two of them ;-) https://www.washingtonpost.com/resizer/Pgwp336nJmezmUytE-y08HV3zZA=/1484x0/arc-anglerfish-washpost-prod-washpost.s3.amazonaws.com/public/OVAJDFXRHQI6RGOCZ7FG7T3BBQ.jpg

Link | Posted on Jan 15, 2019 at 20:23 UTC
In reply to:

IamJF: So we are looking at stopped down pictures from a modern lens with correction - of course it's sharp ... would be a huge fail if not.
But these new Nikon lenses look very useful, seems a nice system!

@Saville: That could likely be.

Link | Posted on Jan 13, 2019 at 21:05 UTC
In reply to:

IamJF: So we are looking at stopped down pictures from a modern lens with correction - of course it's sharp ... would be a huge fail if not.
But these new Nikon lenses look very useful, seems a nice system!

Stirling: "So you are comparing a 16mm end of an F/2.8 zoom to 24mm F/4 ? and the 24mm is still over a stop worse." No. I didn't compare those, was just one lens I had in mind. You made the _general_ claim that it is the way of mirrorless to have strong vignetting. It is not necessarily so in my opinion. Do recent lenses show significantly more vignetting with mirrorless, e.g. the new Nikon Z and Canon R lenses? What about Fuji's lenses?

Link | Posted on Jan 13, 2019 at 20:59 UTC
In reply to:

IamJF: So we are looking at stopped down pictures from a modern lens with correction - of course it's sharp ... would be a huge fail if not.
But these new Nikon lenses look very useful, seems a nice system!

@Stirling: Way of Mirrorless? Cos^4-law will cause vignetting, therefore vignetting isn't a thing of MILCs alone. The 24-105 is an extreme outlier. But even recent Canon lenses have tremendous vignetting (16-35/2.8iii . Lenstip: "Such high vignetting we haven’t seen so far in our tests. At 16 mm and by f/2.8 in the frame corners disappears 75% of light (−4.07 EV)". ).

Link | Posted on Jan 13, 2019 at 20:05 UTC
In reply to:

Oskar P: I know 2 Sony owners with 400mm lenses. Both lenses are Canon.
Canon EF lens mount has almost become a "standard" for Sony cameras. People swear by the Sigma and Metabones adapters...and Commlite, etc.

Sure. Almost any to now 1/10th. Looking at the list clearly shows math is not your strength. 16 capable with 20 fps, 26 capable of 15 fps (mostly older). How many FF Sony FE lenses are there?
You, unfortunately, have no clue about the A9. It shows in your comments and the language you use. And no, not "everyone", for sure. Just read what the guys using it for BIF or sports have to say compared to D5 or 1dxii (Fred Miranda forums give you plenty of knowledge). I am sure you don't want to hear that they get to a different conclusion. I shot the D5 and now have two A9s. How could I do that, now after you said the A9 is a joke or crappy. You are the guy to ask. You are the man.

Link | Posted on Jan 5, 2019 at 00:05 UTC
In reply to:

Oskar P: I know 2 Sony owners with 400mm lenses. Both lenses are Canon.
Canon EF lens mount has almost become a "standard" for Sony cameras. People swear by the Sigma and Metabones adapters...and Commlite, etc.

Almost any? https://www.fredmiranda.com/forum/topic/1492817/0 . Already 2017 quite a few.
Oskar P is a known t r o l l here. Just look at how hard he tries to make Sony bad.

Link | Posted on Jan 4, 2019 at 23:22 UTC
In reply to:

mr.izo: so, sony charges double for this plastic moving parts, lol?

mr.izo. In Germany the new Canon is more expensive.
There have been many comparisons and no, Sony's line-up wasn't clearly more expensive compared to Nikon's, for example. The newer Canon lenses are in a similar price range, too. If you compare 12 year old lenses to the newly introduced one's, however, you will obviously find Sony to be more expensive. What a surprise.

Link | Posted on Jan 4, 2019 at 17:07 UTC
On article Gear of the Year 2018 - Barney's choice: Nikon Z7 (358 comments in total)
In reply to:

LessMirrored19: Nikon Z hype should die immediately.

They are, we are not talking about totally different technology where a company is first to the market. That is not the case here. Nikon knew what was on market, dslr, as well as milc-wise. They had milcs before, just with a smaller sensor. They build lenses for milc in the past, too. They are acquainted with video and LV AF. AF algorithms etc. aren't that different for Nikon 1 and Nikon Z. People always made the argument that the photographic tradition of Nikon will be the basis to show competitors how to build a real camera. They could test competitors and decide how to tackle those and surpass them. They couldn't. Nikon made a decision not to eat too much into their dslr sales, too, by using small batteries (not necessary) or one card slot (not necessary, too). Sony has the sensor advantage, being one of the leaders, here. I can't see the sensor size to be that challenging. They know FF cameras well. The algorithms don't change significantly, too.

Link | Posted on Dec 24, 2018 at 19:09 UTC
Total: 1108, showing: 1 – 20
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