Jon555

Lives in United Kingdom London, United Kingdom
Joined on Jul 2, 2011

Comments

Total: 7781, showing: 1 – 20
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In reply to:

eno2: This perfectly highlights the camera industry's chronic problem, after years an insignificant iteration is launched at a higher price, and they wonder why they have fewer and fewer customers.

This could have been offered as a service update, double the memory, and update the software for a price.

BTW, interesting update - apparently the OM-1 will get some of the OM-1ii's AF goodies in a Firmware update at some point... they stress many things won't be included (presumably to avoid discouraging people upgrading).

Link | Posted on Feb 22, 2024 at 21:50 UTC
In reply to:

jhunna: 24-50G, the first $1100 kit lens...

The Panasonic Leica 12-60mm f/2.8-4 has been a kit lens for years, it's about $1000 now...

Link | Posted on Feb 21, 2024 at 17:53 UTC
In reply to:

jhunna: 24-50G, the first $1100 kit lens...

The 20-70 is £1299 in the U.K. (Wex) which isn't that different to the U.S. price ($1099) via the usual $=£ conversion and plus 20% VAT (£1082.5 w/o the VAT).

I'd like the 20 more than the stop myself... others may not...

Size is 92mm vs 99mm and weight 440g vs 488g.

Link | Posted on Feb 21, 2024 at 17:02 UTC

I think I'd rather give up a stop and have the 20-70mm f/4 for about the same weight (488g), length (99mm) and cost (currently $1098 at BH)...

Link | Posted on Feb 21, 2024 at 16:58 UTC as 25th comment | 1 reply
In reply to:

MrBrightSide: We are living in wonderous times. But what is a “diagonal” fisheye?

Diagonal Fisheye - the diagonal of the image covers 180 degrees (so less horizontally/vertically). All the sensor area is covered by the image. E.g. 15mm on FF.

Circular Fisheye - the image will be a circle contained in the middle of the sensor area and 180 degrees across. The rest of the sensor will be black. E.g. 8mm on FF. (The trick is not to get the tips of your shoes in the shot.)

Note due to the Fisheye distortion a 15mm diagonal fisheye will cover a wider angle than a shorter focal length rectilinear lens.... about 142 x 92 degrees (HxV) vs. 104 x 81 degrees for a 14mm non-fisheye.

Link | Posted on Feb 21, 2024 at 15:32 UTC
In reply to:

dloop: Another great Sigma Astro Lens we can't use on Canon's RF mount.

But, thankfully, in the 5+ years since the RF mount was introduced, Canon has produced their own excellent RF mount prime astro lenses... Oh wait!

Is fast that important for Astro, just buy a cheap sky tracker and a slightly slower lens (for less money in total) and use a little longer exposure?

Also is a fisheye a great idea vs the Sigma EF 14mm f/1.8 rectilinear (plus EF-RF adapter), or similar?

(Although I must have used Fisheye lenses more that the vast majority of people, I struggle with Astro as being a good use due to the distortion. Maybe using a fisheye zoom shooting at 12mm with the camera in portrait orientation could be interesting?)

Link | Posted on Feb 21, 2024 at 15:23 UTC
In reply to:

chrishurley: The S5ii is BSI? Have they disclosed the sensor manufacturer or is there some way to tell that they are the same?

P.P.P.S. the A7II and A7III sensors also don't have the same imaging area or pixel size:
The III pixel has area 34.93 µm² and the II 35.16 µm²
Image size: 35.8 x 23.9 mm vs. 35.6 x 23.8 mm

P.P.P.P.S. Photon shot noise (=average noise that was in the light it sampled) for a 1% full pixel (=sqrt of the number of electrons sampled, almost entirely due to the much better QE):
II : 97 electrons
III : 30 electrons
The read noise (noise due to the sensor) is 2.7 (II) and 1.2 (III) electrons.

Link | Posted on Feb 14, 2024 at 22:14 UTC
In reply to:

chrishurley: The S5ii is BSI? Have they disclosed the sensor manufacturer or is there some way to tell that they are the same?

That's not the difference between FSI and BSI but the lower QE and greater read noise in an older sensor... the FSI/BSI difference is more photons are collected (but may not be sampled, i.e. converted into electrons) in the same pixel size (assuming it is), except usually, and especially here, the QE has gone up a lot - so it's not possible to tell unless you work for a sensor manufacturer...
https://www.photonstophotos.net/Charts/Sensor_Characteristics.htm#Sony%20ILCE-7M2_14,Sony%20ILCE-7M3_14,-Unity%20ISO,-Full%20Well%20Capacity,-Read%20Noise,-Conversion%20Noise,-ISO%20Invariant%20at%20ISO

P.S. QE = Quantum Efficiency = the % of photons that get captured as electrons, although varies with frequency (i.e. colour of light) so a single number is only a little useful.

P.P.S. Note if you factor in the QE and turn on "Full Well Capacity" you get 145k and 150k photons collected per pixel, which is well within whatever other changes they might have made in the newer sensor.

Link | Posted on Feb 14, 2024 at 22:03 UTC
In reply to:

chrishurley: The S5ii is BSI? Have they disclosed the sensor manufacturer or is there some way to tell that they are the same?

Not really sure it matters on a FF sensor, the effect of BSI is teeny on large sensors...

Link | Posted on Feb 14, 2024 at 16:56 UTC

I think for people who are new to ILC photography and have a modest budget the S5II is pretty compelling, as (at least in the U.K.) it's often discounted down to £1299 or so (£1249 from Clifton cameras on 1st Jan 2024, generally £1499 at present), and the only competition there is the Z5 (current best price £1245) which it is a significant improvement on... The Zf is currently £2049 at one location and £2099-2299 elsewhere.

Link | Posted on Feb 14, 2024 at 16:55 UTC as 54th comment | 1 reply
On article Sony a9 III available today: global shutter comes early (454 comments in total)
In reply to:

Yao Zhang: I was super excited about full frame global shutter and what it can do to sport photography in the long run, then I was hit in the face when I learned the the reality that most sporting events nowadays that require this much shutter speed, think F1, ban professional looking cameras outright, in other word, rendering this camera largely useless for amateur photographers who don’t have media access to these events. Miami F1 does not even allow an a7 with a 40mm prime, and Kentucky Derby bans interchangeable lens camera as a policy. It feels like as the camera technology evolves there is actually less opportunity to use them.

A steward got unhappy with my using a small m43 camera with a long lens at a Premier League game (at West Ham). I explained I was just shooting a few images for my friend, who should have been sitting beside me but couldn't come, leaving an empty seat, but not unreasonably (considering what they sell the media rights for) they said no. No grief, I just put it away and they went away...

Link | Posted on Feb 9, 2024 at 10:35 UTC
On article Sony a9 III available today: global shutter comes early (454 comments in total)
In reply to:

Matt_007: Being in stock everywhere on day one is not a good look in terms of demand for this camera. I really think we've seen the last of these high-end medium resolution pro cameras given the R3 also didn't set the world alight. I think Nikon got wise and ended it with the D6.

The ubiquitous Z9 at sporting events proves you really need a great tele lens range and fast to market jpeg to be successful in the pro action field.

People used to do two-page spreads ("double truck") in glossy magazines with 6MP images and no-one complained about a lack of resolution, so 24MP is plenty unless you need a really big crop. Plus serious Sport Pros tend to use really long lenses so they can see the shot, rather than hope it'll be there in a crop. I'm not their target market and do like being able to crop vs buying a $12,000 lens, but if close enough the faster processing of sub 30MP images is handy...

There are very few occasions where you'd want to use a whole 45MP image (I do have a couple), even whole-wall sized images almost never work with close-up viewing distances as you see so little of it.

Link | Posted on Feb 9, 2024 at 10:29 UTC
In reply to:

Sadovski: Isn't it strange that Canon made FF NON-stack sensor that is on-par with tiny M4/3 STACKED sensor in terms of speed, and cost of both cameras are the same?

R6 Mark2__OM-1 Mark2
24 MP _____20 MP
40 fps _____50 fps
4k 60p_____4k 60p
2499$ _____2399$

Is there any numbers about readout speed (rolling shutter) on OM1-2 ? I assume it is 8ms (120 fps)

No need to apologise... plus the smaller the sensor the faster it should read out, so m43 should be faster, but against that the rolling shutter effect appears by readout time and sensor size is irrelevant once you have the number...

Also m43 hasn't been big on getting updated sensors for some time...

The GH6 seems to be 12.7ms at 3024 rows which would be 18.2ms for all 4336 rows if still performance was at the same speed (so same bit depth).
Source: https://www.cined.com/panasonic-lumix-gh6-lab-test-rolling-shutter-dynamic-range-and-latitude/

I have a train to catch so I'm giving up on the G9ii. Obviously the OM-1 is fast, although not by FF stacked standards.

Link | Posted on Feb 1, 2024 at 11:48 UTC
In reply to:

mcantsin: $2400 means that this camera will only be for people who have already invested in the MFT system, particularly in lenses.

This is not got for MFT which urgently needs state-of-the-art affordable ultracompact cameras that compete with the likes of the Fuji X-S20, Sony a6700, Canon R50 etc.

Investing in MFT increasingly looks like the sunken cost fallacy...

Yes and no, but if you think you are getting the same reach as a 1200mm lens on an R5 you will be disappointed, as if you think it will be a fraction the weight and cost if you buy the most expensive camera and lens.

BTW was responding to replies to the OP not the OP...

Link | Posted on Jan 31, 2024 at 16:42 UTC
In reply to:

breschdlingsgsaelz: I have been shooting with long focal lengths for a while and could have used more frequently. But that was on Full Frame with no more that 400mm.

I wonder who really needs 1.200mm FF equivalent and for what. 600mm is already quite long, that on APS-C I see applications. But 1.200mm? And starting from 300? Is this for paparazzi use?

@panther fan - if you want to use the equivalent aperture you need to specify a 20MP sensor on other formats, the common Sony 60MP sensor has pixels about 12% wider than 20MP m43...

I see the aperture I don't want to go below (for pixel-level sharpness, e.g. for cropped wildlife photos) before diffraction softness gets to be an issue as about the same for my 50MP FF and 20MP m43, although of course sometimes depth of field is more important, even if the in-focus stuff is slightly less sharp.

Link | Posted on Jan 31, 2024 at 10:30 UTC
In reply to:

mcantsin: $2400 means that this camera will only be for people who have already invested in the MFT system, particularly in lenses.

This is not got for MFT which urgently needs state-of-the-art affordable ultracompact cameras that compete with the likes of the Fuji X-S20, Sony a6700, Canon R50 etc.

Investing in MFT increasingly looks like the sunken cost fallacy...

You don't get 1200mm of reach, except (i) against 20MP sensors in other formats or (ii) if you never crop. What you get is the Field of View of a 1200mm lens (which mostly makes it harder to find/follow stuff, but can make the subject larger in the viewfinder, although FF cameras often have crop modes that will enlarge the image in the viewfinder so the selected crop, e.g. APS, fills it).

An 800mm lens on a 45MP R5 puts over 25% more pixels on the same subject at the same distance, and they are larger pixels.

A m43 sized crop from the Sony 61MP sensor that seems to be everywhere is 4632 pixels across vs 5184 for the OM-1 (so about 90% of the pixels), plus the Sony pixels are, of course, a little larger.

Link | Posted on Jan 31, 2024 at 10:21 UTC
In reply to:

Jon555: This seems to be twice the RAM, new logo and a rubber-coated dial plus firmware improvements. I guess it means OM-1 owners won't be getting a firmware update to add the features (I don't have one, but seems a shame, I suspect moving the Human detection somewhere better would be appreciated).

It is a bit of a worry about how much development ability OMDS have, as after the Olympus-developed OM-1 we've had two models with minimal hardware changes and unexciting firmware changes. (Lenses don't mean much, as may be designed and manufactured by someone else.) /Optimism-mode=on : I guess we'll have to wait and see if something exciting comes along, which would be nice, maybe all the money/effort is going there? : /Optimism-mode=off

That's a good question... really that they are able to develop new cameras or upgraded cameras that clearly have a lot of effort put into them, so reassuring the users that we'll see new and exciting products rather than the current low effort slightly warmed-over ones, which have a limit as to how many times you can do that before it doesn't work anymore....

A Pen-FmkII that's an OM-1 inside, with some restrictions due to heat dissipation, would be nice for me, but not going to happen as the first version didn't sell that well. A OM-1 sized camera swapping the stacked sensor for a 32-38MP BSI dual-gain sensor supporting 6k7 (or at a pinch 6k5) video would be what I'd like that is practical... and would buy if sensibly priced...

Link | Posted on Jan 30, 2024 at 20:15 UTC
In reply to:

Tom Nook: Still no 4k120? Really? How come Pana can do it without stack sensor but OM systems can't?

Panasonic and OMDS use the same processors (the Socionext Milbeaut series, like everyone else except Canon and Sony), although Panny may use a more recent one in their 2023 cameras, of course (OM didn't change).

I don't think at current mirrorless camera sales volumes (say 1.2M cameras, most with older processors, spread between the Socionext users in 2023) anyone's paying them to do a customised chip (Nikon have in the past).

P.S. Guesstimated by:
(1-0.726)*1.1*(1126960+700267+983203+1056640+174392)
So assuming December's figures will add 10% to actual Jan-Nov numbers and knocking off Canon and Sony's market share.

Link | Posted on Jan 30, 2024 at 16:56 UTC
In reply to:

Sadovski: Isn't it strange that Canon made FF NON-stack sensor that is on-par with tiny M4/3 STACKED sensor in terms of speed, and cost of both cameras are the same?

R6 Mark2__OM-1 Mark2
24 MP _____20 MP
40 fps _____50 fps
4k 60p_____4k 60p
2499$ _____2399$

Is there any numbers about readout speed (rolling shutter) on OM1-2 ? I assume it is 8ms (120 fps)

The Sony sensor in my GH5 is about 1/60th...

Link | Posted on Jan 30, 2024 at 16:45 UTC
In reply to:

Architeuthis: I was using the Sigma 150-600mm Sports with Canon EF mount with Metabones adapter on EM1II for a while (now switched to Sony FF). Due to the big image circle and the general optical performance, images were quite soft. Improvements were brought by using a 0.71x speedbooster, that also provided faster apertures. With 0.71x speedbooster this lens is really a beast on MFT...

In case the new OM lens is indeed a Sigma 150-600mm Sports with built in MFT mount, I do not think this is a great hit. An important advantage over the adapted Sigma Sports will (hopefully) be better AF. The important opportunity to improve IQ with 0.71x speed booster is lost...
And there is a hughe price difference: 2700$ (OM) vs. 1700$ (Sigma Sports, currently at B&H) - but maybe this difference suggests that it is a new designed lens and not just the old Sigma with MFT mount?

Wolfgang

As it might be relevant I use a Canon EF 100-400 II with a Metabones Smart Adapter on my GH5 and the image quality wide-open at the long end is as good as you could want. Continuous AF doesn't work and Single AF is very accurate but with some lenses can hunt on occasions (it's fairly rare with the 100-400, super-rare with the 70-200 2.8 II and varies with other lenses).

I also have a Viltrox 0.71x focal reducer, but don't use it with long lenses as it shortens them. I did try the Viltrox straight-through adapter but felt it was less good than either the Metabones Smart Adapter or the Viltrox focal reducer one, in my sample size of one of each, all with the latest firmware.

The Metabones prices are crazy though, the Smart Adapter is just a lump of brass and a cheap micro-controller and I paid £249 for a mint second-hand one, vs. £449 new and £123 (in 2019) for the new Viltrox with a piece of glass (there was a discount).

Link | Posted on Jan 30, 2024 at 11:40 UTC
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