photonius

photonius

Lives in United States United States
Joined on Jan 5, 2008

Comments

Total: 76, showing: 1 – 20
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In reply to:

AEY: Is this is true "Maximum aperture F3.5 - F6.4"
What is minimum aperture?

@cainn24,
thanks for the info. I had missed that they added an aperture in the hx50. hx20 and hx5 don't have one.
anyway, sounds promising if the lens was improved.

Direct link | Posted on Apr 14, 2015 at 20:49 UTC
In reply to:

AEY: Is this is true "Maximum aperture F3.5 - F6.4"
What is minimum aperture?

Can't find anything in the specs, but the previous models had no aperture, just a ND filter that dropped in when necessary. Makes actually sense, because at f6.4 one is already diffraction limited with such small pixel size, so one doesn't want to make it worse by stopping down an aperture.

Direct link | Posted on Apr 14, 2015 at 12:30 UTC
In reply to:

photonius: Looks like a worthwhile upgrade to the HX20, because of the viewfinder, and it didn't gain weight! Only nit-picking is the no RAW. However, I presume the images are highly cooked, so that RAWs would have lots of issues, and probably Sony can't be bothered to provide a professional RAW converter for different computer platforms for such a consumer product.

My major issue would be: is the lens properly sealed this time? The HX20 has problems with getting dust on the sensor (yes, it's not a interchangeable lens camera, but it DOES get sensor dust. Had it twice within the warranty period, was fixed under warranty, but afterwards?). Probably because of the long zoom which causes quite some suction, and it seems there are no good seals in place. But this should be dealt with, the dust on a small sensor can be very visible and if that happens during travel, no way to fix it, it hurts all your pictures.

at cainn24. Well, what has been seen is in video mode, there is quite a bit of barrel distortion, which is not in still pictures.
So, I think it's not only noise reduction, but also CA, distortion, and vignetting correction that is applied. Obviously they implemented this all in their camera software. But I guess for a desktop computer, somebody has to actually sit down and write the RAW converter with all these optimisations (as option) as well (basically the lens profiles). I just think they can't be bothered to do this effort for a P&S. For a dSLR it's expected, so they do it. There may also be the issue of slow write to disk of large RAW format files.
I'm also not sure that third parties would bother to write a RAW converter module for such a camera.

Direct link | Posted on Apr 14, 2015 at 12:16 UTC

Looks like a worthwhile upgrade to the HX20, because of the viewfinder, and it didn't gain weight! Only nit-picking is the no RAW. However, I presume the images are highly cooked, so that RAWs would have lots of issues, and probably Sony can't be bothered to provide a professional RAW converter for different computer platforms for such a consumer product.

My major issue would be: is the lens properly sealed this time? The HX20 has problems with getting dust on the sensor (yes, it's not a interchangeable lens camera, but it DOES get sensor dust. Had it twice within the warranty period, was fixed under warranty, but afterwards?). Probably because of the long zoom which causes quite some suction, and it seems there are no good seals in place. But this should be dealt with, the dust on a small sensor can be very visible and if that happens during travel, no way to fix it, it hurts all your pictures.

Direct link | Posted on Apr 14, 2015 at 10:27 UTC as 38th comment | 3 replies
In reply to:

tom1234567: I don't no why camera makers keep producing cameras with these
SMALL CRAPPY SENSORS

It's time the public were educated to what they are buying
Instead of being ripped off by ALL camera manufactures

In case you have not noticed, Sony also makes cameras with larger sensors, i.e. the RS models.
However, there is no avoiding the laws of physics for optics. Big sensors, big optics....
If you want a small camera with a good zoom range, this is the only way to go.
To be honest, my wife has a precursor, it's really nice. I often find myself grabbing it instead of my dSLR because it's so convenient. And the built in GPS works quite ok, why can't they get that into dSLRs if they can get it into such a little body.
So, in the end of the day, it's your choice what you want, no need to bash a product if you don't understand the reasoning behind it.

Direct link | Posted on Apr 14, 2015 at 10:18 UTC
In reply to:

mediasorcerer: 24 to 3 or 400 max at the long end would have been fine?
What were they thinking?
A telescope with a sensor on it lol.
Maybe the ufo/aliens crowd are the target market?

the optics is already old, used in previous model.
Actually, works quite well. Compensates to some degree for the fact that there is no RAW, and the jpegs are smeared, so you can't crop as well as one might expect from an 18Mp sensor.

Direct link | Posted on Apr 14, 2015 at 10:14 UTC
In reply to:

Eleson: If optical steady shot means 'in-lens' then I don't understand 5-axis stabilization?

at timur born.
I think it's a combination of sensor and optical stabilisation. that's why you get five axis.

Direct link | Posted on Apr 14, 2015 at 10:12 UTC
In reply to:

TFD: Just wondering if they image the whole sensor. Sony's other18M cameras have a 19M total sensor this email one has a 21M sensor. This makes wonder if they reduced the image area slightly to allow them to shrink the lens. Smaller image area smaller lens.

Interesting point, I noticed this as well. However, it may also be used for shake correction, i.e. in one of the night modes, where multiple images are taken, they have then same extra space at the edges to line up images. Also, their specs list electronic stabilisation in video, so they must have an buffer edge to capture shifted images. Surely, in the past they cropped, that's why the focal length in video was always smaller than for still picture. maybe with a more buffer edge , you get wider video now

Direct link | Posted on Apr 14, 2015 at 10:10 UTC

how boring, the airplane flying by is missing, and the highest parachute jump should be floating by as well. Well, next time .... ;-)

At least the bicycle should have jumped across the sickle

Direct link | Posted on Mar 20, 2015 at 22:39 UTC as 26th comment
In reply to:

photonius: i just found the Kodak Wratten Carbon Neutral Density gel filters. Looking at their transmission curves that you find at Kodak, they seem indeed very color neutral, they also cut the IR, so indeed the magenta cast may be of the past.

Yes, as I mentioned in another reply earlier, most filters, also B+W, singh ray, and others don't filter in the IR, thus leading to color casts with high ND filters. Thus it is nice to see that this issues is finally being noticed. In film days not an issue but it seems it took manufacturers a while to address it with the filters.

Direct link | Posted on Feb 28, 2015 at 19:32 UTC

i just found the Kodak Wratten Carbon Neutral Density gel filters. Looking at their transmission curves that you find at Kodak, they seem indeed very color neutral, they also cut the IR, so indeed the magenta cast may be of the past.

Direct link | Posted on Feb 28, 2015 at 10:36 UTC as 3rd comment | 3 replies
In reply to:

jtan163: What would an IR cut filter be used for?
I was under the impresion most digital sensors had one on board (with some exceptions, Leica M8?).
Would these be used to allow the specialist astro cameras (e.g. D810a and the Canon whtaever it is a) to be used in more normal photography?

most of the strong ND filters give a color cast, because - despite the IR filter in the camera - IR will leak through and cause these color casts. The ND filters have normally no filtering capacity in the IR range, although they reduce the transmission in the visible light. Because the visible light is reduced, the IR that gets through has a stronger effect than normally. The simple way to prevent this is to extend the wavelengths that are filtered into the IR.

Direct link | Posted on Feb 27, 2015 at 11:05 UTC
On Opinion: Canon EOS 750D and 760D article (318 comments in total)
In reply to:

Mike Jacoubowsky: My prediction- The T6s lives a long and happy life and becomes a "Canon to remember." The T6i goes away fairly quickly, replaced by an "SL" version (smaller & lighter, same IQ but enough fewer features to strongly differentiate from the T6s). Give the T6i a year or so.

The one HUGE feature the T6s holds for me? The level. There are some of us (raising both hands on this one!) that have trouble getting shots level, and frequently need to adjust rotation by up to 1.75 degrees or so. Having that level will both decrease time in Photoshop and likely get faster & better shots.

I agree about the level. It should really be in all cameras, as it would also be a good feature for beginners, many P&S cameras have that. I don't have any particular problem holding the camera steady, but looking through the small Rebel viewfinder while taking a UWA shot, it's not so trivial to get it exactly straight. I have to test my camera seriously once, I suspect the viewfinder is not quite straight either.

Direct link | Posted on Feb 17, 2015 at 20:33 UTC
On Canon EOS 5DS / SR First Impressions Review preview (2357 comments in total)

The Nifty Fifty is already the 50mm f1.8 lens.

It should be the Hefty Fifty or something like that.

Direct link | Posted on Feb 10, 2015 at 14:20 UTC as 128th comment | 3 replies
On Hungarian law bans photos taken without consent article (321 comments in total)

It may be a way to suppress opposition and protests. The Hungarian government at present is very right wing and has run already into problems with the EU (of which it is a member) about continuously eroding civil liberties and suppressing opposition. The law may well be mostly applied during demonstrations so authorities can confiscate cameras, mobiles etc. that document abuse.

Direct link | Posted on Mar 18, 2014 at 18:58 UTC as 124th comment | 2 replies

well, the sensor is only 16 bit. "This new sensor is a 19-Mpix, 30.7 x 15.8mm Bayer pattern 16-bit CMOS sensor ... ", so obviously some processing.

Direct link | Posted on Mar 3, 2014 at 22:26 UTC as 22nd comment | 2 replies

" Sales for the Rebel SL1 have not been as great as we expected in America". I guess everything has to be supersize there.... ;-) But surely, with the obesity pandemic, small controls won't work.

Direct link | Posted on Mar 3, 2014 at 20:53 UTC as 81st comment | 2 replies

I thought they use a trick to have multiple exposures at different sensitivities?

Direct link | Posted on Mar 3, 2014 at 20:16 UTC as 26th comment | 4 replies
On Nikon Coolpix P600, P530, S9700 go big on zoom range article (45 comments in total)

no GPS in the bigger models? why

Direct link | Posted on Feb 7, 2014 at 11:59 UTC as 15th comment | 1 reply
In reply to:

Abaregi: Why the small sensors in these new ones from Fuji, isn't the point of stepping up from a cellphone or compact camera to get higher image quality indoors and in darker days/nights?

Simplified: Big sensor = big lens
So, either dSLRs for big sensors, or a compromise like Sony RX100. A compact all in one with large zoom range, that's what these cameras are. If you want big sensor go for the X FUJIFILM System X-E2 etc.

Direct link | Posted on Jan 6, 2014 at 17:10 UTC
Total: 76, showing: 1 – 20
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