57even

Lives in United Kingdom London, United Kingdom
Joined on Jul 16, 2012

Comments

Total: 486, showing: 101 – 120
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In reply to:

57even: One big problem with ETTR - channel clipping. The histogram may tell you when the JPEG is clipping, but it usually uses the green channel. If you have a three-colour histogram, it's easier.

Which makes it all a bit haphazard IMO. You can easily blow the red or blue channel without realising it unless you allow for a fudge factor.

I seldom push the highlights up against the stop - you always find parts of the clouds are blown. I normally back off at least 1EV from the clip point, if not more.

Link | Posted on Apr 28, 2015 at 14:39 UTC
In reply to:

Skipper494: All very fine, but in film days we got grain from particles in the film, nothing from die film. As an engineer with quite a lot of experience in sensor design, I can assure you that most noise comes from the proximity of photo sites, or wiring, (even poor software) which is why lower resolution large sensors have less noise and more dynamic range.

Compare the Nikon D700 and the Sony NEX 7, for instance. Consider how good the Fuji S2 Pro was in it's day. Compare a lower resolution 1/1.7 sensor with a higher resolution 1/2.33, such as the Nikon P7000 with the Pan FZ35.

Frankly, too much emphasis is put on high numbers and marketing, instead of good photography results.

@Great Bustard

You mentioned DR, you didn't say what ISO. Have a look at DXO mark and check the D7200 vs the D750. Exactly the same up to ISO 400, and never more than 1/3 of a stop behind until ISO 6400. I reckon the lens/VR would turn that into a rounding error.

Compare it to a 16MP FF camera, like the D4, and the bigger sensor is more than 1 stop worse at low ISO where I need it most, and doesn't equalise till ISO 800, but doesn't reach a stop better till ISO6400.

Since I shoot around 95% of my stuff at ISO100-800, this doesn't seem all that relevant in DR terms. Sure, I know the SNR is better, approximately 3.5 dB, but only at higher ISO, and tonal/colour range is no better at low ISO. Plus there is more resolution to play with on the D7200. That high read noise clobbers tonal range/colour response at low ISO as well.

Big pixel DSLRs are specialised gear, and certainly not the primary choice for daylight shooting.

Link | Posted on Apr 28, 2015 at 14:32 UTC

One big problem with ETTR - channel clipping. The histogram may tell you when the JPEG is clipping, but it usually uses the green channel. If you have a three-colour histogram, it's easier.

Link | Posted on Apr 28, 2015 at 07:22 UTC as 116th comment | 4 replies
In reply to:

Skipper494: All very fine, but in film days we got grain from particles in the film, nothing from die film. As an engineer with quite a lot of experience in sensor design, I can assure you that most noise comes from the proximity of photo sites, or wiring, (even poor software) which is why lower resolution large sensors have less noise and more dynamic range.

Compare the Nikon D700 and the Sony NEX 7, for instance. Consider how good the Fuji S2 Pro was in it's day. Compare a lower resolution 1/1.7 sensor with a higher resolution 1/2.33, such as the Nikon P7000 with the Pan FZ35.

Frankly, too much emphasis is put on high numbers and marketing, instead of good photography results.

@Skipper494

So how come the D7200 has more dynamic range than the A7mk2 (let alone the 5Dmk3).

Link | Posted on Apr 28, 2015 at 07:19 UTC
On article Fujifilm XF 16mm F1.4 moves from roadmap to retailers (227 comments in total)
In reply to:

PascallacsaP: Fuji take their time and bring out one gem after the other. True 35-mm thinking in the APS-C world is rare these days. It requires some rethinking in terms of DOF, but fortunately the story is the same regarding light gathering. To me this lens is an optimal tradeoff between those two factors (given that the lens needs to stay reasonably compact).

The trouble with DOF equivalence statements is that some lenses work really well at maximum aperture, and some have low contrast and bokeh fringing and are almost unusable.

I regularly have to stop fast lenses down to F2.8 to get rid of these issues, which rather changes the equation.

Similarly, 'equivalence' ignores the stopped down situation, where larger sensors need stopping down more for the same DOF, with consequent issues for shutter speed and ISO.

In fact, it really only matters if you like portraits where only one eyelash is in focus, which not something any serious photographer would routinely do.

Link | Posted on Apr 17, 2015 at 01:06 UTC
In reply to:

SnakePlissken: Someone needs to tell Harris that Nikon, like Canon, are finished and will be in liquidation very soon and he should sell all his equipment and go mirrorless. Does this pro not read DPReview message boards or what? Get with the times Harris!

If you think it's fun to carry that lot around, good luck to you. Not arguing that different people have different styles, but every kilo of dead weight I can shift without losing image quality is a good thing, and I don't really notice the speed difference in single shot mode. CSC cameras are improving all the time, and the best have very rapid AF.

Link | Posted on Apr 16, 2015 at 20:54 UTC
On article Samsung NX1 Review (1256 comments in total)
In reply to:

57even: If Samsung want sales in the UK they had better sort out the dealer and supply issue, and provide a decent after sales service. Sorry, but I am not one to buy expensive gear off the Internet, I want to buy from someone I can talk to if there is a problem.

At the moment, they are only available in big white-goods stores, with a very limited array of accessories. Not a viable option for serious users.

I don't need a camera store to tell me what camera to buy, I want them to provide a professional service in terms of supply and service.

You can deal with the manufacturer of course, if the product is under warranty, but I assure you it all goes much better if the dealer conducts the negotiations for you. The fact that they can back up your version of events helps a lot.

Link | Posted on Apr 15, 2015 at 14:56 UTC
In reply to:

Virvatulet: Many seem to support the idea that one could arbitrarily dictate what others can do in public places. Using a public space inherently conveys an accord on limited privacy; the very prospect to be heard, seen and remembered by others.

As long as no physical change is forced on one's personal proximity, there really is nothing what one should do about other's freedom to choose how they use the immediate free space of theirs.

Passively collecting stray photons with a camera can not be objectively seen as excessive behaviour. It's also vital to remember to separate photographing from publishing (legislation variant). What can be legally seen shall be legally photographed (a priori), regardless of the circumstances affecting lawful publishing.

The ladies in the picture exercised their right to choose how they want to be seen and remembered when they use public space. Not willing to give even a split-second moment of their day to the memories of a gentleman randomly crossing their path.

I don't always ask people, but nor would I embarrass them. If one of their friends saw them on my gallery, there would be nothing compromising about the image in any way.

Pervs wandering around beaches looking for topless bathers and posting on youtube are making life a real chore for the rest of us.

Link | Posted on Apr 14, 2015 at 00:20 UTC
On article Samsung NX1 Review (1256 comments in total)
In reply to:

57even: If Samsung want sales in the UK they had better sort out the dealer and supply issue, and provide a decent after sales service. Sorry, but I am not one to buy expensive gear off the Internet, I want to buy from someone I can talk to if there is a problem.

At the moment, they are only available in big white-goods stores, with a very limited array of accessories. Not a viable option for serious users.

The real advantage of specialist dealers is that they have a hotline to the manufacturer for accessories and supplies. If something is not on Amazon I am sunk. Big box dealers just shrug and say 'we don't stock that item'.

The NX1 is aspiring to be a pro-level camera, and should have pro-level backup and support. That's all I am saying. One key feature of such support is a competent regional repair centre and a pro dealer network.

I would insist on that if putting £3000 on the table for a camera system.

Link | Posted on Apr 13, 2015 at 19:52 UTC
In reply to:

Virvatulet: Many seem to support the idea that one could arbitrarily dictate what others can do in public places. Using a public space inherently conveys an accord on limited privacy; the very prospect to be heard, seen and remembered by others.

As long as no physical change is forced on one's personal proximity, there really is nothing what one should do about other's freedom to choose how they use the immediate free space of theirs.

Passively collecting stray photons with a camera can not be objectively seen as excessive behaviour. It's also vital to remember to separate photographing from publishing (legislation variant). What can be legally seen shall be legally photographed (a priori), regardless of the circumstances affecting lawful publishing.

The ladies in the picture exercised their right to choose how they want to be seen and remembered when they use public space. Not willing to give even a split-second moment of their day to the memories of a gentleman randomly crossing their path.

There is a fine line between offense and reportage. It is also very dependent on the society you are in. In some countries, images are seen as intrusive, in others they are common place.

For me, good manners usually dictates what I shoot and publish. If someone objects, I don't push the issue, neither do I publish embarrassing images of people. I once unintentionally caught a girl when her skirt blew up around her waist, but I would never dream of publishing it. In fact I deleted the image.

Other people would have it all over youtube in a minute.

Social media has dragged public photography into the privacy debate. You may not like it, but expect bans in more countries as a result.

Link | Posted on Apr 13, 2015 at 17:19 UTC
In reply to:

SnakePlissken: Someone needs to tell Harris that Nikon, like Canon, are finished and will be in liquidation very soon and he should sell all his equipment and go mirrorless. Does this pro not read DPReview message boards or what? Get with the times Harris!

I missed that bit, thanks for the heads up.

My experience of street shooting with a Fuji XE2 vs a Nikon D800 is that no-one notices me when I point a Fuji at them. Wave a Nikon in their face and I get reactions much like those Spanish ladies.

I concur with the sciatica problem as well. I am in my 50's and many years of carrying a DSLR kit around has taken a toll.

Link | Posted on Apr 13, 2015 at 17:09 UTC
In reply to:

SnakePlissken: Someone needs to tell Harris that Nikon, like Canon, are finished and will be in liquidation very soon and he should sell all his equipment and go mirrorless. Does this pro not read DPReview message boards or what? Get with the times Harris!

Frankly, not that it matters, but I can't see a single shot here that could not have been made with a mirrorless camera.

Clearly he is going to use his kit hard, and needs something that can take a battering. I'm not criticising his choice at all, but for most of us part-timers this is overkill.

Link | Posted on Apr 13, 2015 at 16:13 UTC
On article Samsung NX1 Review (1256 comments in total)
In reply to:

lacikuss: This is by far the best mirrorless camera in the market today. I can only say bravo Samsung.

In my wish list the only thing I'm missing is in the connectivity section. I would like to see this camera to be able to share my photos directly to my preferred social network through WiFi without the need of my phone. If somebody can do this it is Samsung.

I have used APSC and FF sensors side by side for more than 6 years.

The generation and resolution of the sensor, the presence of an AA filter, the manufacturer and design of the sensor, the spectral response of the sensor, the lens used, even the RAW converter used, make a bigger difference to the 'look' than the sensor size.

You can get thinner DOF and sometimes better high ISO performance from a larger format (depending on the make) but this is not always relevant to a particular image.

Link | Posted on Apr 12, 2015 at 23:26 UTC
On article Samsung NX1 Review (1256 comments in total)
In reply to:

57even: If Samsung want sales in the UK they had better sort out the dealer and supply issue, and provide a decent after sales service. Sorry, but I am not one to buy expensive gear off the Internet, I want to buy from someone I can talk to if there is a problem.

At the moment, they are only available in big white-goods stores, with a very limited array of accessories. Not a viable option for serious users.

Thanks George, my experience is the same.

Link | Posted on Apr 12, 2015 at 22:57 UTC
On article Samsung NX1 Review (1256 comments in total)

If Samsung want sales in the UK they had better sort out the dealer and supply issue, and provide a decent after sales service. Sorry, but I am not one to buy expensive gear off the Internet, I want to buy from someone I can talk to if there is a problem.

At the moment, they are only available in big white-goods stores, with a very limited array of accessories. Not a viable option for serious users.

Link | Posted on Apr 12, 2015 at 19:52 UTC as 113th comment | 10 replies
On article Samsung NX1 Review (1256 comments in total)
In reply to:

TheEngineer: Why are the studio tests shots done with a zoom lens?

The images of the nx1 look soft and lacking detail compared to the images of the other cameras that were shot using prime lenses.

Read the review.

Link | Posted on Apr 12, 2015 at 14:46 UTC
On article Nikon D5500 Review (399 comments in total)
In reply to:

zodiacfml: Awesome DR at base ISO found in DXO. Though the NX1 is even better, the price is out of reach for many.
I also appreciate they have reduced the weight so much that it weighs less than a d3300. More than a decade ago, Japanese were trying to reduce fuel consumption even though fuel prices were affordable or few was asking for it.

That battery life is something too for something like a day of travel as a tourist.

I know what fibreglass is. I am wondering why you have such a downer on fibre reinforced thermoplastic, since it uses a similar principle.

Link | Posted on Apr 5, 2015 at 23:37 UTC
On article Nikon D5500 Review (399 comments in total)
In reply to:

zodiacfml: Awesome DR at base ISO found in DXO. Though the NX1 is even better, the price is out of reach for many.
I also appreciate they have reduced the weight so much that it weighs less than a d3300. More than a decade ago, Japanese were trying to reduce fuel consumption even though fuel prices were affordable or few was asking for it.

That battery life is something too for something like a day of travel as a tourist.

Fibreglass uses short strands and is multidirectional. It does not matter whether the fibres are moulded in a thermoplastic or imbedded in resin, the effect is the same.

Polycarbonate has to be quite thick to provide good rigidity and resistance to stress fractures, especially around corners and accessory holes. This material seemingly solves that issue and allows use of thinner mouldings.

Why don't you read something about it?

Link | Posted on Apr 5, 2015 at 22:15 UTC
On article Nikon D5500 Review (399 comments in total)
In reply to:

zodiacfml: Awesome DR at base ISO found in DXO. Though the NX1 is even better, the price is out of reach for many.
I also appreciate they have reduced the weight so much that it weighs less than a d3300. More than a decade ago, Japanese were trying to reduce fuel consumption even though fuel prices were affordable or few was asking for it.

That battery life is something too for something like a day of travel as a tourist.

Never heard of fibreglass then....?

Link | Posted on Apr 5, 2015 at 13:27 UTC
In reply to:

D1N0: With aps-c moving to 24mp and even 28, 16 is just not going to cut it anymore. Eventually m43 will be a niche for street photographers who don't crop.

Rishi, you said "hiking up the ISO 2 EV (say to ISO 800) on FF does not mean it's going to have more noise than mFT at 2 EV lower ISO (ISO 200). It means that the noise advantage of FF will disappear, bringing it down to mFT levels."

Noise based on sensor size is an approximation and a poor one at that. It assumes that the sensor architecture and generation are the same.

Using 'speed' to denote lens aperture causes more confusion than anything else, especially when used to define 'equivalency'. Equivalency should relate to the final image, in which case it should apply for the same DOF in both images.

This requires 2 stops more ISO or lower shutter speed on the FF camera.

The whole 'equivalency' nonsense is predicated on the fact that 'less DOF' is always 'better' when most of the time it's the opposite.

Link | Posted on Mar 27, 2015 at 09:36 UTC
Total: 486, showing: 101 – 120
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