dbateman

Lives in United States Bethesda, MD, United States
Works as a Microscopist
Joined on Jul 27, 2006
About me:

Sony H5
Canon S5 full Spec converted
Olympus E3
Olympus E510 Full Spec Converted
Sigma SD14
Pentacon Six and Kiev 60

Comments

Total: 119, showing: 1 – 20
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On article The Sony a9 is a 24MP sports-shooting powerhouse (1821 comments in total)
In reply to:

mosc: Ok, but how does it look with a 400mm f4 lens attached to it? I think that grip is still a little small for that kind of weight don't you?

Well in all fairness a 400mm 135 format lens will require a tripod.

Link | Posted on Apr 19, 2017 at 21:29 UTC
In reply to:

Gabor Ruppert: So this is a lens which supports a smaller sensor than the Sony 10-18, but more expensive, bigger and heavier. What's the point I'm missing?

If you want smaller lighter, than buy the panasonic 7-14mm f4. This is an excellent lens. This new Leica is for that extra 5% quality people pay for.

Link | Posted on Apr 19, 2017 at 06:44 UTC
On article Panasonic Lumix DC-GH5 Review (1152 comments in total)

To Dpreview,
I appreciate your reviews, however I find the GH5 review lacking an obvious comparison page. I was expecting and hoping for a direct comparison with the Olympus EM1 mk2. Both cameras have the same price tag, both argue for best AF, both argue for great IS, Panasonic says the GH5 is also for stills. So I would like to see a page with a direct head to head.
Which is better for AF?
Which has better IS?
Does the Panasonic AF four thirds lenses as fast as the Olympus EM1 mk2? I think they might be equal.
Four thirds users want to know these answers, if not, then I do.
Thank you

Link | Posted on Apr 12, 2017 at 18:13 UTC as 30th comment | 6 replies
In reply to:

Infared: If this was a Canon EF mount I would buy one as I would have 12 lenses to hook up to it. They would sell like hot cakes! ....:-(

If you were really skilled you can get a EF mount with matching screws and unscrew the lens mount and swap them. This sometimes worked but very rare. As stated the pin out and comunication is the same, but mounts different. The registration distance is also similar. But this is not ideal. You can dig up some really old posts in the sigma forum about people trying this.

Link | Posted on Apr 10, 2017 at 22:30 UTC
In reply to:

Infared: If this was a Canon EF mount I would buy one as I would have 12 lenses to hook up to it. They would sell like hot cakes! ....:-(

@mescalama the sigma SD mount is a pentax mount with 1mm shorter flange distance and the same canon electrical comunication. There will be no adapters. But if you love the sigma, you can get sigma to mount convert all your sigma lenses to this mount.

Link | Posted on Apr 10, 2017 at 03:15 UTC
On article Fujifilm GFX 50S Review: Modern MF (898 comments in total)
In reply to:

dbateman: This review seems fair and direct for an out of the box camera. Whats not mentioned is that the Fuji is actually capable of 1/800 sync speed with the adapter Fuji has made for the joint fuji Hasselblad lenses.
Also whats not mentioned is the whole adapter culture. Pop over to th GFX facebook page and you can see what the 10000 users have tested on this camera. The sigma Art f1.4 lenses cover the frame, as do the Zeiss Otis lenses. So if you need speed these are your options. Other older lenses faster than f1.8 don't seem to fully cover the sensor, but seems almost all old f2 lenses do. This does not mean that an old f1.4 lens will cover stoped down to f2, as this has not played out.
Also whats being talked about is that it looks that the larger 55x41mm sensor will fit inside, just as sony got a 135 sensor in the NEX, Fuji has a lined out mask square for one. With fuji talking from day one that the lenses are designed for 100+ mega pixels to me says either they have tested the 100Mp 55x41mm sensor and they will cover or Fuji is due to release a camera with the recently anoused new BSI 100Mpixel Sony 44x33mm sensor. New sensor tech will be much better than a sensor that is almost 5 years old.

@Rishi yes I actually do think the lenses will cover and it definently looks to hold the larger sensor. The issue I think is cost. The 44x33mm sensor is really a mass market sensor, thus cheap. This allowed for a cheap cost and fuji market penetration. The large sensor is not used much and low volume so the inital cost would have been huge.
However Fuji now can show they have a market and get Sony to mass produce the larger sensor. So cost will be lower. Starting the other way would have killed DMF. Now things can get exciting.

Link | Posted on Apr 6, 2017 at 10:35 UTC
On article Fujifilm GFX 50S Review: Modern MF (898 comments in total)

This review seems fair and direct for an out of the box camera. Whats not mentioned is that the Fuji is actually capable of 1/800 sync speed with the adapter Fuji has made for the joint fuji Hasselblad lenses.
Also whats not mentioned is the whole adapter culture. Pop over to th GFX facebook page and you can see what the 10000 users have tested on this camera. The sigma Art f1.4 lenses cover the frame, as do the Zeiss Otis lenses. So if you need speed these are your options. Other older lenses faster than f1.8 don't seem to fully cover the sensor, but seems almost all old f2 lenses do. This does not mean that an old f1.4 lens will cover stoped down to f2, as this has not played out.
Also whats being talked about is that it looks that the larger 55x41mm sensor will fit inside, just as sony got a 135 sensor in the NEX, Fuji has a lined out mask square for one. With fuji talking from day one that the lenses are designed for 100+ mega pixels to me says either they have tested the 100Mp 55x41mm sensor and they will cover or Fuji is due to release a camera with the recently anoused new BSI 100Mpixel Sony 44x33mm sensor. New sensor tech will be much better than a sensor that is almost 5 years old.

Link | Posted on Apr 6, 2017 at 02:05 UTC as 76th comment | 3 replies
On article Hasselblad X1D-50c First Impressions Review (316 comments in total)
In reply to:

dbateman: A 0.08EV advantage sounds to me like you need to look at 10 cameras from Fuji and 10 cameras from Hasselblad. I bet with in the brand you would see a 0.08 EV difference. Ie your within your error for looking at the exact same thing!

Ya I know people who can't see a difference between f2 and f2.2 or f2.5 and f2.8. And these differences are 0.3 EV or 1/3 of a stop. I can't imagine 0.08 Ev of a difference to mean anything. Also slight errors in lenses used would equal more than 0.08. Just seems silly to even talk about.

Link | Posted on Apr 4, 2017 at 21:00 UTC
On article Hasselblad X1D-50c First Impressions Review (316 comments in total)

A 0.08EV advantage sounds to me like you need to look at 10 cameras from Fuji and 10 cameras from Hasselblad. I bet with in the brand you would see a 0.08 EV difference. Ie your within your error for looking at the exact same thing!

Link | Posted on Apr 4, 2017 at 10:38 UTC as 32nd comment | 2 replies
In reply to:

dsut4392: Not looking forward to this spreading AT ALL due to the restrictions on laptops & iPads, but from a photographic perspective, this won't cause me much pain. I haven't pulled out my SLR on a plane for years, and you only need to check the _body_ on flights _inbound_ to US/UK. Unless you're shooting a niche system most camera bodies are quickly and easily replaceable in any of the destinations you'll be arriving into from one of the affected hubs, in the very, very unlikely event your bags go missing or contents are stolen. [I acknowledge that back in my student days with no credit card, replacing a camera body would have been non-trivial].

I just think lensrentals and similar are now going to see a lot more business. There are photographers whom dont own any camera system. Just rent what they need when arrive.

Link | Posted on Mar 22, 2017 at 06:17 UTC
In reply to:

TomHudsonVisual: Hi Rishi,

At one point a few years ago (before you were staff), the common wisdom of DPReview reviwers regarding why FF sensors outperform APS-C sensors had less to do with total light gathered, but more with the larger sensor's ability to spacially isolate its per-pixel circuitry better, thanks to more real estate per pixel, reducing electrical interference to increase the S:N ratio. What caused the shift in thinking that it is actually the total light gathered that increases the S:N? You mentioned the "averaging out" of signals, which implies you are comparing a FF sensor to an APS-C sensor of a similar pixel density. That seems understandable enough: as in a 50MP Canon aginst the 7D II. But would you not see a greater increase in S:N from a FF sensor outfitted with the similar number of pixels as an APS-C competitor, instead of the similar density? That seems to be what we observe in the A7s II.

It seems you may be comparing apples to oranges here, If you don't take into account that the D810 is 36MP, not 50. You should be comparing the Fuji's noise performance to the 50MP Canon instead, to truly see an MF advantage. Otherwise, why not stack the Fuji against the A7S II (which we accept is an odd comparison)?

Sorry, I just reread my first sentence. I know you didn't, but I am. I ment to just agree with you and say it was garbage.
Also on more thought, I think a surprising number of 135 format lenses will cover the fuji sensor. Juat as a surprising number of c mount lenses covered m43rds, and surprising number of m43rds lenses cover sony with the m43rds to e mount adapter, and as many have found lots of APS-c lenses to cover 135 format. So fast lens options will exist using adapters on the Fuji. And the adapters are already available!

Link | Posted on Mar 22, 2017 at 06:05 UTC
In reply to:

TomHudsonVisual: Hi Rishi,

At one point a few years ago (before you were staff), the common wisdom of DPReview reviwers regarding why FF sensors outperform APS-C sensors had less to do with total light gathered, but more with the larger sensor's ability to spacially isolate its per-pixel circuitry better, thanks to more real estate per pixel, reducing electrical interference to increase the S:N ratio. What caused the shift in thinking that it is actually the total light gathered that increases the S:N? You mentioned the "averaging out" of signals, which implies you are comparing a FF sensor to an APS-C sensor of a similar pixel density. That seems understandable enough: as in a 50MP Canon aginst the 7D II. But would you not see a greater increase in S:N from a FF sensor outfitted with the similar number of pixels as an APS-C competitor, instead of the similar density? That seems to be what we observe in the A7s II.

It seems you may be comparing apples to oranges here, If you don't take into account that the D810 is 36MP, not 50. You should be comparing the Fuji's noise performance to the 50MP Canon instead, to truly see an MF advantage. Otherwise, why not stack the Fuji against the A7S II (which we accept is an odd comparison)?

I like your point and agree the total light gathering argument of 135 format is just pure garbage. Sensor quantum efficiency and under basic tech is much more important than sensor size. If you don't think so then lets compare a the kodak 14n or Canon 1D or 5D to the Panasonic G85. Boy those 135 sensors are junk compared to four thirds :)
Also his lens areguement is a little flawed. Just becase fuji doesn't have an f1.4 lens does not mean it will never exist. If fuji does not make one than a third party will for sure. Not soon after the release of m43rds were the a set of f0.95 primes. A f1.2 prime is possible for the fuji system and a 135 format 0.95 lenses are very rare. Heck we will soon see with adapters if the old 50mm f1.2 lenses cover the fuji system.

Link | Posted on Mar 22, 2017 at 04:21 UTC

To this post I would say Yes. This is what four thirds shooters have been saying for a while. You get an excellent sensor in a four thirds camera and its much better than a 135 sensor. But then more people buy 135 cameras and the sensor cost comes down and you get the even better sensor in the 135 camera.
The sensor in the Fuji is REALLY old by 135 standards. Thus newer sensor tech will hit the fuji system as there is more interest and production costs will come down. Thus 135 sensors will be soon playing catch up, just like four thirds sensors are now.
Too bad no one made an argument like this early in the four thirds days. I find it really funny how things spin around.

Link | Posted on Mar 22, 2017 at 03:05 UTC as 251st comment | 1 reply
In reply to:

dbateman: Looks like all that is missing is a 150mm f2 portrait lens.

Good point magrum, whats also missing would then be a tripod mount on the adapter and hopefully a removable tripod mount on tbe future 150mm f2.
Medium format is for people to Stop, Think, Compose.
If you just want to run and gun, use a Canon.

Link | Posted on Mar 2, 2017 at 03:03 UTC

Looks like all that is missing is a 150mm f2 portrait lens.

Link | Posted on Mar 1, 2017 at 06:06 UTC as 7th comment | 2 replies

So if I am reading this correctly, both the Hassy x1d and the fuji gfx will be able to use the joint HC lens line. Seems interesting, they are big lenses, but you can choose between the 2 cameras. So 9 lenses or 12 if the fuji also supports the HCD lenses.

Link | Posted on Jan 19, 2017 at 08:35 UTC as 89th comment
In reply to:

DamianFI: Hopefully this solves the crashing of my A7RII when using the MC-11.

@Eric, I think he was against the only one lens mount idea, with electronic adapters for whatever camera you want. This idea below actually would not work as nikon, pentax, canon, sony use different ways to contol the aperture.

Link | Posted on Oct 29, 2016 at 18:27 UTC
On article Google Pixel tops DxOMark's Mobile rankings (116 comments in total)
In reply to:

vscd: Google is getting everywere now... I can't get to the toilett without finding something from them.

@ Fairbanks I think all toilets run iOS.

Link | Posted on Oct 5, 2016 at 16:37 UTC
On article Google Pixel tops DxOMark's Mobile rankings (116 comments in total)
In reply to:

Bombastic: We have 9 phones now in our household. Being a geeky establishment with two engineers and 2 geeky teenagers, this shouldn't be a surprise. Incidentally, we all find it hilarious people are actually considering jumping ship from Android to iOS based on hardware improvements alone. The phones are remarkably similar, but the environment they roam in is entirely different.. If you're centralized around iOS you will never defect to Android, and vice versa. Henceforth, comparing an image quality of an iPhone to an Android is an exercise in pixel-peeping futility.

I think he means why would you ever use a horible apple product. Really everyone I know with an iphone has a broken screen. And when I see someone with an iphone the first question I ask is if their screen has broken yet.
This in contrast to a samsung S1 which I have droped no less than 6 times from 4 foot height on to concrete without issues. Or my new LG g4 which the wife accidentally drove over, without any issues.

Link | Posted on Oct 5, 2016 at 16:35 UTC
In reply to:

sonics: Looks like a great lens, but gone is the compact m43 format:

http://camerasize.com/compact/#594.613,660.545,hd,t

@ptox Dont you just hate it when olympus announces a new len, all my other micro four thirds lenes disappear. :p

Link | Posted on Sep 21, 2016 at 23:03 UTC
Total: 119, showing: 1 – 20
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