robert1955

Joined on Jan 9, 2010

Comments

Total: 82, showing: 1 – 20
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In reply to:

USN Squid: OK. Lensrentals pulled apart to pieces a $10,000 Nikkor lens. And?

What does this pointless exercise show or prove? That they have $10,000 to blow on destroying an expensive lens?

Taking the lens apart tells you nothing about the lens' performance. You need to shoot photos to determine that.

A nice photo gallery shot with this lens would have been orders of magnitude more useful than this drivel.

I'm baffled by this attention-seeking nonsense. I guess it competes with the "Does It Blend" YouTube guy.

Next up - YouTube video: "Lensrentals smashed a $10,000 Nikkor lens with a hammer! Wanna watch?"

Being very repetitive does not make you correct. Actually all of your most recent post is incorrect. Including your highly idiosyncratic use of the word destroyed.

But keep digging. Problem under water is that the sand keeps sliding back

Link | Posted on May 19, 2020 at 05:17 UTC
In reply to:

USN Squid: OK. Lensrentals pulled apart to pieces a $10,000 Nikkor lens. And?

What does this pointless exercise show or prove? That they have $10,000 to blow on destroying an expensive lens?

Taking the lens apart tells you nothing about the lens' performance. You need to shoot photos to determine that.

A nice photo gallery shot with this lens would have been orders of magnitude more useful than this drivel.

I'm baffled by this attention-seeking nonsense. I guess it competes with the "Does It Blend" YouTube guy.

Next up - YouTube video: "Lensrentals smashed a $10,000 Nikkor lens with a hammer! Wanna watch?"

Seems the old adage 'if you are in a hole, stop digging' has not yet sunk down to squid

Link | Posted on May 18, 2020 at 06:04 UTC
In reply to:

Becksvart: Good set of questions going in, clear result when done. We'll see if the Z and F lens design teams will lunch separately forever, I guess. Interesting.

He's probably a Sony user

Link | Posted on May 18, 2020 at 05:40 UTC
On article Ins and outs of ISO: where ISO gets complex (152 comments in total)
In reply to:

FoxShutter: Are we going to get jobs at NASA after reading this ?

not in a long way. This is not rocket science

Link | Posted on Apr 19, 2020 at 08:49 UTC
On article Ins and outs of ISO: where ISO gets complex (152 comments in total)
In reply to:

Horshack: Richard, your first installment was great but this one misses the mark. The information is correct but organized in a muddled manner that makes it unnecessarily confusing to the reader. I think you tried to connect too many loosely related concepts and did so in a manner that lacks cohesion or flow. This needs a complete rewrite IMO.

You could also see it as a sort of catalogue of implementations possible within the standard

Link | Posted on Apr 18, 2020 at 18:16 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

Reactive: It is a perfectly practical idea to set a DSLR to its lowest, most high quality ISO and forget about it most of the time. Compared with film, DSLRs already provide a few extra hand-holdable stops thanks to image stabilization. I prefer to lock the ISO at 100 and concentrate on aperture/shutter/composition. On very rare occasions where a shutter/aperture combination is critical, I consciously allow the camera to creep up to ISO1600. For me, auto/high ISO on DSLRs is simply an unwanted interference like a wobbly third leg on your tripod, waiting to degrade your image, and in most cases can be avoided.

Depending on how it is implemented in your camera, setting it to Auto ISO may be even more practical.

Link | Posted on Apr 11, 2020 at 11:26 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

hc44: For me this was the takeaway:

"it's the reduction in exposure that increases the noise, because it means you're capturing less light and are more likely to see how random and noisy the light itself is."

So sensor evolution won't obliviate the need for bigger buckets to improve low light picture quality.

@HC44: you read off every hour or 24 hrs

Link | Posted on Apr 11, 2020 at 08:00 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

xeriwthe: camera manufacturers (cough coughUJIFILM cough cough) used up their one free 'switch up ISO standard on new product introduction to allow marketing to make (FF == APS-C) equivalence bullshartguments' and the like.

No it is not. It is merely changing from one method that is allowed by CIPA to the other one, Both have their pro's and con's but neither measures a unit called iso's and both give leeway for manufacturer's interpretation,

Link | Posted on Apr 10, 2020 at 20:11 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

SmilerGrogan: This is is a word-for-word lifting from the writings of a frequent forum poster named Bob, and grossly misstates the function and purpose of ISO.
Worse still the members of the ISO photo standards committee were not given a chance to respond to the criticism and provide readers with correct information.
Here's a list of people on the committee that need to be contacted before the next article is written. If contact info is needed, let me know.
Scott Foshee (Adobe)
Yoshi Shibahara (Fuji)
Ken Parulski— led the committee that developed the ISO standard for speed measurements (aKAP Innovation).

@smilergrogan: weren't you wrtinig a treatise on this?

Link | Posted on Apr 10, 2020 at 15:14 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

UllerellU: Oh yes, I suppose that Cartier Bressom or Ansel Adams were fully aware of every technical entanglement that was hidden behind their cameras and the films they used ... I think it is better that you spend your time learning composition and improving your technique, very little It helps if you understand exactly how ISO works on a technical level (not on a practical level) if your photos are not up to it later.

But UllereIIU: what is your practical understanding of ISO?

Link | Posted on Apr 10, 2020 at 15:09 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

hc44: For me this was the takeaway:

"it's the reduction in exposure that increases the noise, because it means you're capturing less light and are more likely to see how random and noisy the light itself is."

So sensor evolution won't obliviate the need for bigger buckets to improve low light picture quality.

@HC44: have you ever looked at a rain meter?

Link | Posted on Apr 10, 2020 at 15:06 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

C plus plus: What is ISO?
International Organization for Standardization

also
Indianapolis Symphony Orchestra
International Socialist Organization

When taking about images it is
ISO image, a file containing the whole contents of an optical disc

and maybe we'll have less repetitive discussion if we call by a long and proper name (I can dream}

Link | Posted on Apr 9, 2020 at 20:20 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

Jon555: Pretty sure the ISO standard for digital camera sensitivity includes DIN as well as ASA compatibility. Just luckily no-one uses the former part...

Also it used to be called the "International Federation of the National Standardizing Associations (ISA)" so I find the explanation for the name ISO slightly iffy...

That is indeed for film, a different standard.
Pity though the log scale was dropped. Would have made the current high numbers far more manageable and in perspective

Link | Posted on Apr 9, 2020 at 18:55 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

C plus plus: What is ISO?
International Organization for Standardization

also
Indianapolis Symphony Orchestra
International Socialist Organization

When taking about images it is
ISO image, a file containing the whole contents of an optical disc

As if and when I can work in office again, I'll encounter a dozen standards. The one we're talking about here is ISO 12232:2019

Link | Posted on Apr 9, 2020 at 18:52 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

J A C S: So we learn what ISO is not but not what it is?

We're not there yet. We haven't learned all it is not

Link | Posted on Apr 9, 2020 at 18:49 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

MamiyaMax: Hopefully this will reduce comments about ISO cheating with various brands from the peanut gallery.

which adjustment cannot really be made objectively

Link | Posted on Apr 9, 2020 at 18:48 UTC
On article The ins and outs of ISO: What is ISO? (589 comments in total)
In reply to:

photo_rb: I don't have much to base this on except a wikipedia article but I'm more inclined to think ISO was created more as a way of eliminating the two standards of DIN and ASA so we just had one. Anyone remember the dual ASA/DIN scales on our cameras and meters?

You have to realize that the ISO standards, there were separate for color, color reversal, b+W for film IIRC are not the same standard for digital stills. They tried to make them so that there was a connecting point: an output file created at sort of similar settings should look about the same
I think it is best to forget about the film ISO standards. For one they were more flexible than both users then, and certainly now, realised. For another looking at them tells you exactly nothing about what happens when you change digital ISO on your dial

Link | Posted on Apr 9, 2020 at 18:42 UTC
On article Fujifilm X-A7 review (268 comments in total)
In reply to:

geopapa: No evf no party. When you can have EVF with the similarly priced fuji xt-200 or with a body as small as the a6100's (maybe even smaller if you choose mft)
This is for someone new to photography who doesn't yet know he/she needs evf. It's something that clearly differentiates a more serious camera from the compact/smartphone crowd. Just my 2 cents.

@ geopapa last post: if you had made your comment in more open and reasonable terms [more like in the second post you would not have the click bait reactions

Link | Posted on Apr 6, 2020 at 19:10 UTC
In reply to:

Kris2403: Experts, help me out with something... the sensor of Sony A7R IV looks like a crop of the one in Fuji GFX 100. So, why is DR of Sony's camera lower than that of Fuji's? Fuji's is 16 bit, so why is Sony's 14 bit? Is Sony's not a crop of Fuji's sensor?

Having the possibility to write 16 bit files does not mean the sensor can create output that fills those 16 bits with information. The new A7Riv has a max of 15 bits of DR.

Link | Posted on Jul 25, 2019 at 05:06 UTC
In reply to:

SmilerGrogan: The future belongs to the company that perfects Foveon sensors. Sony is whistling past the graveyard which will one day claim it’s remains.

Very funny in 2019

Link | Posted on Jul 25, 2019 at 04:57 UTC
Total: 82, showing: 1 – 20
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