BJL

BJL

Lives in United States United States
Joined on Dec 17, 2002
About me:

Olympus E-520, E-1, 14-54 f/2.8-3.5, 50-200 f/2.8-3.5
Olympus C2040
Canon Elan II/EOS-50, 28-105 f/3.5-4.5
Pentax K1000
Kodak Instamatic
First camera: Kodak Brownie

Stabilization by Manfrotto

Comments

Total: 237, showing: 1 – 20
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In reply to:

endofoto: Sony has to make difference in sensors to force us to buy new cameras. Graphene sensors can increase camera sales, bec silicon sensors cant get any better. Graphene sensors are 1000 times more light sensitive and 10 times cheaper than silicon sensors.

No: the 1000 times improvement in sensitivity was compared to previous _graphene_ sensor experiments – the number was mis-represented in the press release from the marketing division at the university where the research was done.
Silicon sensors are already detecting over half of the photons that reach them, so there is no possibility of getting more than 2 times more sensitive.

Direct link | Posted on Jan 30, 2016 at 21:44 UTC

With the rear dial looking dedicated to exposure compensation, how does manual exposure setting mode work? Does that dial become aperture, or shutter speed, despite its labelling?

Anyway I a happy to see Olympus offer a small, low profile body (so-called "rangefinder style") with an eye-level viewfinder. I want to down-size from my "bump-top" EM-5 some day.

Direct link | Posted on Jan 27, 2016 at 17:27 UTC as 23rd comment | 2 replies
In reply to:

Elliot H: where's the 4x5 sensor &
while you're at it the 8X10

Price is the main barrier to larger sensor sizes; sensors up to about 5"x4" (actually 200mm or even 300mm diagonal) are already available, as custom order "wafer-scale" sensors from companies like Teledyne-Dalsa. See the two at bottom-right on this page:
https://www.teledynedalsa.com/imaging/products/custom/sensors/

P S. Pixels are huge, though.

Direct link | Posted on Jan 4, 2016 at 03:45 UTC
In reply to:

Lee W: Can the human eye actually resolve 8k video or are we at saturation limit with 4k?

It depends on the ratio of picture width to viewing distance, or "viewing angle" For typical eyes, 4K is good until your distance the screen is about the width of the screen; already quite close! And that is for stationary images that you can examine carefully; for most moving images, motion blurring and such mean that less resolution is needed. So seeing the full 8K detail require absurdly large viewing angle, like a distance from the screen about half the screen's width or less.

But maybe the point is that sometimes 4K is not quite enough and even if 5K or 6K would be enough, it is technically easiest to jump by a factor of two. Then compressing can still look better than a 4K, 5K or 6K signal at the same data rate, since the compression can be selectively done more where it has least visible effect, while keeping more detail in parts of the image than benefit from it most.

Note that some people already have >4K TVs, in the form of 5K computer monitors where they watch movies.

Direct link | Posted on Dec 8, 2015 at 19:43 UTC
In reply to:

JosephScha: Let's see, 4K video (38## by 25##) is said to give an 8MP extracted still. This imples that 8K video (nearly 8### by 5###) should yield a 32MP extracted still. Considering that Panasonic has just one camera with a 20MP sensor, and that 4K video requires some pretty darn fast memory cards ... on the one hand I credit Panasonic for investing in something for several years in the future. On the other hand, I wonder if they realize it will be several years in the future before they can make this work?
Personally, I hope they can squish out a BSI sensor somewhere on their development path, it would be worth it if it can gain a stop of light gathering capability, I'll bet it can.

@mosc Firstly, Panasonic make cameras and sensors in other formats, so this goal of 8K video camera need not be based on 4/3" format. For a professional 8K video camera, I would expect Panasonic to make the sensor in a shape like the 7680×4320 of the "8K UHD" standard, which is 16:9. See
https://en.wikipedia.org/wiki/8K_resolution#Resolutions

By the way, since names like 4/3" and 1" primarily refer to a diagonal size, not a specific shape, there are also video oriented sensors in both those formats that are in wider, lower shapes like 3:2 or 16:9. It is only in the specific application of the Four Thirds and Micro Four Thirds camera systems that the shape is also specified.

Direct link | Posted on Dec 8, 2015 at 19:25 UTC
In reply to:

RonHendriks: Hasselblad is the next to be absorbed.

Hasselblad already went through a similar merger with Danish digital back maker Imacon. In fact, after that merger, the new company was called "Hasselblad", but its top management came from Imacon, and for a while its offices were in the former Imacon head office in Denmark. So basically the two dominant Danish maker of digital backs have taken over the two surviving makers of medium format cameras. (Excluding Leica, which more recently super-sized from 35mm format to a "almost medium format" 45x30mm system.)

Direct link | Posted on Dec 4, 2015 at 00:55 UTC

This article needs a new headline, as many readers are mislead by the original one: the news is not specifically about the NX1.

Samsung is withdrawing _all_ its still and video cameras (except phones!) from several markets: so far, the UK and Germany, and I believe also the Netherlands.

Direct link | Posted on Nov 28, 2015 at 03:10 UTC as 70th comment
On article Sony Europe introduces a68 SLT with 79-point AF module (305 comments in total)
In reply to:

bluevellet: Why do they keep updating their APSC SLT cameras but FF SLT is left out to dry?

Maybe a new APSC SLT is needed to provide IS for existing A-mount lenses - Sony moved IS out of thr boy into the lenses with its APSC mirrorless system. And IIRC, has moved it back to the body with its 35mm format mirrorless system, so those bodies can stabilize adaptor-mounted A-mount lenses.

Direct link | Posted on Nov 5, 2015 at 23:50 UTC
In reply to:

fmian: Just as I've been saying for a while.
Digital sales are slumping, while analog sales are pumping.

fmian wrote:
"BJL wrote: 'Meanwhile sales of mobile phones other than smart phones declined'

and then he wrote: 'Mobile phone sales are not down'

So which is it?"

It's both, as is clear if you look at the numbers in the source that you cite:
- smart phone sales are well up
- "dumb phone" sales are down, but by less
- total mobile phone sales = "smart plus dumb" are up.

And by the way,
sales of "phones with digital cameras that get used a lot" are up.

Direct link | Posted on Nov 5, 2015 at 15:58 UTC
In reply to:

fmian: Just as I've been saying for a while.
Digital sales are slumping, while analog sales are pumping.

Mobile phone sales are not down: they at worst were only slightly up in in that one quarter, with a shift in the mix towards more smart phones. Last I saw, mirrorless sales were about level or up slightly.

So:
- Digital camera-phones (smart phone) sales well up: 13-20% and in numbers that overwhelm everything else in this list.
- Total mobile phone unit sales up a bit, revenues up more due to the mix shifting towards smart phones.
- Mirrorless ILC sales about flat.
- P&S sales going down for years now (as camera-phones largely replace them)
- DSLR sales down after a "bubble" of film to digital transitions, and not because of a move back to "analog" SLRs!

The bottom line is that your real and imagined downs are mainly shifts in the digital product mix towards different kinds of digital tool, with total sales and usage of digital photographic equipment going up.

P. S. Are analog photography sales up? A one-time uptick in one niche product line (Instax) does not quite show that.

Direct link | Posted on Nov 5, 2015 at 03:01 UTC
In reply to:

tkbslc: Shrinking sales? Seems like a trend with all brands.

Not all brands; just the brands whose products fail to also handle phone calls, text messaging, music playing, email, web browsing, video games, internet connectivity, and so on. There is no point ignoring that fact that for the vast majority of camera users who are only interested in snapshots and little video clips, "smart phones" are now the dominant tool.

Direct link | Posted on Nov 4, 2015 at 05:11 UTC
In reply to:

fmian: Just as I've been saying for a while.
Digital sales are slumping, while analog sales are pumping.

"Are digital sales not decreasing?"

No, sales of digital photographic equipment are not decreasing! They are just shifting to different product categories. (The same for digital music players; see below.)

And this is shown by data in the source that you cited. To repeat: smart phones ("digital camera-phone-music players") are now the dominant digital photographic tool (in fact the dominant digital tool, period – also for music playing, etc.) and even in that supposedly bad quarter, sales were UP by 13%, for an extra 40 million in a single quarter, which completely overwhelms the decrease in sales of other types of digital camera, which decrease is mostly people buying less of the low end P&S digital cameras.

P. S. Over the last six month or reported sales, the year-on-year in increase in sales of "digital camera-phone-music players" is even more impressive, at 21%, and 124 million more units sold.

Direct link | Posted on Nov 4, 2015 at 05:00 UTC
In reply to:

fmian: Just as I've been saying for a while.
Digital sales are slumping, while analog sales are pumping.

fmiam,

Apart from the folly of inferring a trend from a single quarter's sales, the source you link shows about 13% *increase* in smart phone sales, from about 290,384,400 in 2Q2014 to 329,676,400 in 2Q2105. Meanwhile sales of mobile phones other than smart phones declined, keeping total mobile phone sales almost flat. So there is a continuing shift amongst phone users towards smart phones, which tend to be the phones most likely to be regularly used as a camera.

That is an increase of about 40 million sales in single quarter: how do you think growth in Instax and other film camera sales for 2Q2015 compare?

Direct link | Posted on Nov 3, 2015 at 21:34 UTC
In reply to:

fmian: Just as I've been saying for a while.
Digital sales are slumping, while analog sales are pumping.

You do know that these sale losses are due to less people buying P&S digital cameras because for more and more, their phone is all the P&S camera they need? Since phone cameras are digital, your digital vs analog claim is wide of the mark.

Direct link | Posted on Nov 2, 2015 at 23:33 UTC
On article A lot to Leica? Hands-on with the Leica SL (Typ 601) (1492 comments in total)
In reply to:

Jefftan: look at that huge size,847 gram without a lens
if not using a tripod, just hand holding , all fun of photography is lost

APS-C is the real successor of old 35mm film camera not these full frame

The weight of the body is not too bad: less than most DSLRs in the same 35mm format (only the Nikon Df is lighter AFAIK), and indeed less than the Canon 7D Mk II despite its 1.6x smaller format.

The only available lens looks "solid" though: at 1140g, that 24-90 f/2.8-4 weighs significantly more than the longer and brighter Olympus 50-200/2.8-3.5 (my heaviest lens, so I use it for comparison.)

Direct link | Posted on Oct 21, 2015 at 15:31 UTC
On article RED unveils RAVEN, a lightweight and portable 4K camera (161 comments in total)
In reply to:

photomedium: 16.5 stops DR...damn! Can we have that on a stills camera?

TL;DR We all agree that how RED sensors differ from most others is being able to handle several more stops of brightness than other sensors, not having several stops less noise.

Direct link | Posted on Sep 28, 2015 at 02:23 UTC
On article RED unveils RAVEN, a lightweight and portable 4K camera (161 comments in total)
In reply to:

photomedium: 16.5 stops DR...damn! Can we have that on a stills camera?

@Wild Light: Red's promised 8K sensor is four times as big in area (about 40x20mm, almost "Vista Vision") along with having four times the pixel count, so about the same pixel size. So same DR seems reasonable. Though either way, I am skeptical of these DR claims – has anyone confirmed them in independent tests? If it works, it is probably expanding highlight headroom by something like a sub-linear response as a photosite gets close to full.

Direct link | Posted on Sep 26, 2015 at 02:23 UTC
In reply to:

snapa: Great news, now maybe we can see a 1" sensor XZ-3 in the near future :)

@snapa: As a compromise, how about the new "even better" Sony 20MP 4/3" sensor, as is probably used in the 20MP Panasonic GX8?

Direct link | Posted on Aug 7, 2015 at 13:48 UTC
In reply to:

Just a Photographer: Now all mirrorless camera manufacturers are profitable.
Sony, Fuji and now Olympus all presented black figures recently for their imaging business.

While Nikon and Canon are suffering. Its not that these DSLR manufacturers make losses on selling systems, but they do loose heavily in profitability and marketshare over the recent years.

Times are changing.

Or at least three mirrorless systems have moved into profitability (Fujifilm, Sony, Olympus) and those three systems are taking distinctly different approaches, so combined with the financial health of at least two DSLR systems (Canon and Nikon; don't know one way or the other about Pentax) the prospects are improving for continued diversity of choice and real competition in the ILC market.

Why some people seek to put a negative spin on this run of good news is a mystery!

Direct link | Posted on Aug 7, 2015 at 13:41 UTC
In reply to:

Michael Ma: 5mm. I never knew sensors had to be so thick. I've had a Note 2, 3, 4 and S2 and S4. The bump never bothered me, especially with a S View (flap) cover which evened it out. I would much rather have that space filled out with a bigger battery. 2.5x of what it is now.

"... thinner, more compact, camera modules. At under 5mm thickness, these new modules ..."
It is the whole camera module with lens that is now 5mm thick.
Part of the downsizing is the smaller focal length lens needed with the smaller sensor at equal pixel count.

Direct link | Posted on Jul 31, 2015 at 14:35 UTC
Total: 237, showing: 1 – 20
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