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: 204, showing: 61 – 80
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On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

technotic: Presumably you can't use the tilting EVF if there is something in the hot shoe given they are right next to each other?

<Deleted>

Direct link | Posted on Aug 2, 2013 at 11:48 UTC
In reply to:

Mikhail Tal: Lens size is what matters and the trend is smaller, say companies much more relevant than Aptina.

Rhlpetrus, the "large sensor advantage" that is claimed most is better high ISO/low light performance, and that is actually an advantage of lenses with larger aperture diameters gathering light faster from the subject. As in the forever debated "equivalence". The IQ goals of the vast majority of compact camera users are not much about improving dynamic range at base ISO speed or huge pixel counts for those internet uploads. Big zoom range is probably a more common desire, and that is easier with a smaller sensor if the camera is to stay compact.

Direct link | Posted on Aug 2, 2013 at 03:41 UTC
In reply to:

Mikhail Tal: Lens size is what matters and the trend is smaller, say companies much more relevant than Aptina.

Agreed: most of the advantages attributed to larger sensors are only realized when larger lenses are also used (same f-stop but longer focal length so larger aperture diameter, and more, heavier glass needed). If keeping the camera compact enough means that the big sensor is used with a slow f/5.6 or f/6.3 lens, you might be netter of with a smaller sensor and shorter, brighter lens that gives equally good low light performance.

But Aptina makes 1" sensors (for Nikon, etc.); hence the spin here.

Direct link | Posted on Aug 2, 2013 at 01:54 UTC
On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

mpgxsvcd: Couple of Questions for Dpreview

1. You say that the Image Stabilization can be used with any lens. Is it available to use with lenses that have built-in IS? I assume you can't use both at the same time?

2. This is still a rolling shutter camera so the silent mode still has the serious drawback of skew when the camera or subject move. It will be nice for weddings and posed shots but not for the shoot from the hip street shooting that most people would want to use it for.

3. Is there a 1080p @ 60 FPS MP4 mode?

4. And the number one question on everyone's mind is "Does the GX7 use the GH3 sensor, a GH2 sensor, or an entirely new sensor?".

@jkoch2: I doubt that Olympus would share one of its Unique Selling Points, the best IBIS around. MFT is a mixture of cooperation and competition between Olympus and Panasonic.

Direct link | Posted on Aug 1, 2013 at 19:55 UTC
On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

ThePhilips: A nice camera, overall. Best of all: 20mm kit!

P.S. Can't seem to find release date. Hu?

>Can't seem to find release date.
October in the USA according to Panasonic:
http://shop.panasonic.com/shop/model/DMC-GX7SBODY
http://shop.panasonic.com/shop/model/DMC-GX7KS
(These URL's are in the article, but not linked for some reason.)

Direct link | Posted on Aug 1, 2013 at 19:51 UTC
On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

Dimit: Nice little thing,it seems to have everything accumulated over the last couple of years.By the other hand Pana always seems not to have this little ''something''.Call it ''put this on and this and this..'' syndrome but never go ahead of their competitors.
Just 3 thoughts: Any good reason for the existence of G series? GF,GX and GH seem to cover the whole spectrum.And..what on earth this tilting vf is useful for?Really,anyone?The whole 90 degrees angle of the tilt can be easilyhandled by the respective movement of the camera WITH the eye on the evf.
Last and least: Better looking and similarly equipped with its direct(uglier) competitors EM5 and EP5,the latter being damn expensive,considering the luck of built- in evf.
For the time being best choise seems to be nex7,since most of e mount lenses are OSS,disregarding the 5 axis feature(overated?).
It will sell well.Besides Pana prices tend to drop faster than those of Olympus and Sony,no?

Tripod photography with a tripod not as high as I am tall is one attraction of the tiltable EVF. Another is situations where the tiltable rear-screen _would_ be nice, except that bright light is shining on that screen and washing it out.

Direct link | Posted on Aug 1, 2013 at 19:46 UTC
On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

qwertyasdf: I hope the in body IS works well. Because seriously, Panasonic in lens OIS sucks.

@amipal: the IBIS of the E-M5 works fine for me at 300mm on the 75-300. Have you actually done your own comparison of IBIS and In-Lens IS at 300mm, or are you just repeating what you have read on the internet about IBIS, usually based on bogus arguments?

The usual argument is that as focal length increases, the minimum shutter speed that IBIS can handle increases in proportion --- which is probably true, but this is also true for In-Lens IS, as shown by the fact that the ILIS benefit is always measures in a roughly fixed number of stops compared to the shutter speed needed without IS.)

P. S. It also works well at all focal lengths on my adaptor-mounted 50-200/2.8-3.5; one of the advantages of IBIS over ILIS.

Direct link | Posted on Aug 1, 2013 at 19:42 UTC
On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

gerard boulanger: Just me, but I like to get an OVF and a shutter speed wheel instead of those pre-programmed modes. Same for an aperture ring on lenses
But I wish my Fuji X Pro has a 2.3 M EVF
Tilting EVF, for what?

I think that a tilting EVF is mainly useful for tripod work, and other cases where you want the camera below eye level, such as photographing children at _their_ eye-level.

However, it also allows what I find to be a more secure hand-holding position: holding the camera a bit lower allows me to brace my arms more securely to my torso. I use this brace position with the LCD too, but bright ambient light can make the EVF preferable.

Direct link | Posted on Aug 1, 2013 at 16:19 UTC
On Panasonic GX7 First Impressions Review article (1201 comments in total)
In reply to:

Richard Ettinger: nice design. would love it if it were APS-C. MFT not so much.

retro76, I suspect that you are talking about the effects of using bigger lenses with larger aperture diameters, rather than a direct effect of the sensor size. Even with the same aperture ratio and using a longer focal length to get the same FOV, a larger format has a larger effective aperture diameter, and so shallower DOF.

If you prefer or need to to blur a lot of the image rather than compose portraits and such to avoid distracting backgrounds, bigger lenses with bigger aperture lenses are an advantage, but for the many of us who mostly stop down a bit for adequate DOF, the large format advantage mostly disappears (for equal DOF, a smaller format can use a lower f-stop and so a higher shutter speed and/or lower ISO speed) and the size and weight advantage of a somewhat smaller system can be an advantage.

Direct link | Posted on Aug 1, 2013 at 16:11 UTC
On Just posted: Canon EOS 100D / Rebel SL1 Review article (366 comments in total)
In reply to:

123Mike: "it’s usable enough that I felt more comfortable shooting in live view mode than I normally do - a first for a digital SLR of any make."

The Sony SLTs have had this for like 2.5 years already.
Even the older Sonys had full live-view, since the A300.

Ok, this Canon is a nice product. The lack of a flip out screen really sucks though. The Sony have a very hand pull out screen, much handier than flipping it on the left side.
Also, many of the Sonys do 60p video. All with full time continuous AF tracking of course.

Nice Canon camera, but people accustomed to the Sonys it's just a been-there-done-that thing.

The reviewer was probably using "DSLR" to refer only to cameras that feed an optical viewfinder with the reflex system, but the definition of "Single Lens Reflex" camera does not involve the viewfinder being optical; that just happens to have been the case with all SLRs till recently. Sony's SLTs meet all the defining features of "Single Lens Reflex": "single lens" means that there is not a separate lens for the viewfinder (in contrast with "twin lens reflex"), and they use a "reflex" (mirror) system to enable that.

Direct link | Posted on Jul 26, 2013 at 21:52 UTC
On Just posted: Canon EOS 100D / Rebel SL1 Review article (366 comments in total)
In reply to:

marike6: Now that this camera got a Gold Award, maybe Canon will use this same sensor for another five years.

But seriously, I handled this camera at Costco the other day, and the body is really quite nice. IQ is behind it's competitors but at the entry level this may not matter since images at lower ISOs do look very good.

The problem is lenses. The lenses I'd be interested in mounting like the new Sigma 18-35 f/1.8 or the excellent EF 70-200 f/4 would balance extremely poorly. The shallow grip helps keep the SL1 small, but ultimately hurts ergonomics. In this case a standard Rebel T5i / 700D or 70D would be a significantly better choice.

Many assume (including DPR) that small size is desirable, but it only helps portability. That's it. And since the SL1 is not pocketable anyway, the sacrifice in handling is really all for naught.

@marik6: If the camera tips forward with a certain left-hand position then moving the left hand forward can fix that. This "balance" problem is just a "you're not holding it right" problem as far as I can tell. I have used a rather small and light Olympus OM-D E-M5 with the relatively massive Olympus 50-200/2.8-3.5 plus mount adaptor, and it does not tip forward once my hand is positioned suitably.

Direct link | Posted on Jul 26, 2013 at 21:39 UTC
On Just posted: Canon EOS 100D / Rebel SL1 Review article (366 comments in total)
In reply to:

marike6: Now that this camera got a Gold Award, maybe Canon will use this same sensor for another five years.

But seriously, I handled this camera at Costco the other day, and the body is really quite nice. IQ is behind it's competitors but at the entry level this may not matter since images at lower ISOs do look very good.

The problem is lenses. The lenses I'd be interested in mounting like the new Sigma 18-35 f/1.8 or the excellent EF 70-200 f/4 would balance extremely poorly. The shallow grip helps keep the SL1 small, but ultimately hurts ergonomics. In this case a standard Rebel T5i / 700D or 70D would be a significantly better choice.

Many assume (including DPR) that small size is desirable, but it only helps portability. That's it. And since the SL1 is not pocketable anyway, the sacrifice in handling is really all for naught.

@ Shawn Barnett: I agree with you; in my experience long or heavy lenses are supported by the left under under the lens, making "balance" and "small grip" complaints irrelevant. So why do DPReviews so often have "Cons" like:
- Grip may be insufficient for use with larger lenses
(Actually, I support all my interchangeable lens cameras mostly by the lens, not the body.)

Direct link | Posted on Jul 26, 2013 at 19:55 UTC
In reply to:

Miwok: Does anyone complain about the last rolex or other mont blanc. There is a market for this kind of items, if you don't like it, just forget it. Hasselblad give work for peoples, and probably pay them very well. So, just live them alone if is not your cup of tea.

Actually, a lot of us "complain about" Rolex watches, Mont Blanc pens, and other products designed to separate over-funded, ostentatious fools from their money. Or at least we like to ridicule their customers too.

Direct link | Posted on Jul 22, 2013 at 20:57 UTC
In reply to:

bed bug: Hmmm....a few years ago I owned the Z20, AKA 'the noise machine'. The high ISOs required to handle 1200mm would mean that image quality would suffer terribly, unless you decided to print no bigger than a postage stamp.

Yes, I would agree with other that this is a gimmick.

Are you ignoring image stabilization, which is fine for stationary and slow moving subjects, since camera shake is the main reason for needing higher shutter speeds with long lenses? With f/5.9 at the long end and image stabilization, plenty of daylight shots will not need high ISO speeds.

I have done 1200mm equivalent at ISO 200, f/6.7 1/200s and got images that are sharp at full screen size, and with good light, higher shutter speeds than that are possible. (I did this with an E-M5 in its 2x digital zoom mode and the 75-300/4.8-6.7 lens at 300mm.)

So I expect the long end of this lens to produce some images that are more than good enough fine for displaying on a computer or posting on a website, Flickr, Facebook and such. Which is how most photos from such cameras are displayed, I would guess.

Direct link | Posted on Jul 18, 2013 at 22:20 UTC
In reply to:

pulsar123: Even though obviously a gimmick (I can't image what one would want to shoot at 1200mm equivalent FL; this is the domain for telescopes, with their massive stable tripods and star tracking motors), the lens's FL range is quite impressive from a lens designer's point of view. In addition, the maximum aperture is 36mm (at the long end), which is also impressive for a P&S camera.

IS and the high usable ISO of modern digital cameras are a wonderful combination for long shots: I have got a few nice shots at "1200mm equivalent", hand-held. That is with 300mm focal length on an Olympus E-M5 (so 2x format factor), 2x crop from that to a 4MP final image, with some of those crops looking quite sharp when viewed filling the entire screen.

I wouldn't make large prints though!

Direct link | Posted on Jul 18, 2013 at 20:47 UTC
In reply to:

Carsten Pauer 2: Nice...
...now speed up the Write-Speed from this 32GB SD-Cards to 3x and We have the same Speed to fill the SD-Card as my aged Extreme IV CF-Card.

The fastest of these new SD cards has 240MB/s write speed, faster than the 167MB/s ["1000X"] of the fastest new UDMA-7 version of Compact Flash.

In fact, I believe that Compact Flash is now at the speed limit if the obsolescent PATA interface that it uses. To get faster, one of the dueling CF successors would have to be used, CFast [uses eSATA, adopted by Canon] or XQD [uses PCI Express, adopted by Nikon and Sony]. I do not see either of those being adopted outside of some big, expensive high end photo-journalist type DLSRs and some video cameras ... and the war between those two formats increases the chance that SD will defeat them both.

Direct link | Posted on Jul 17, 2013 at 16:37 UTC
On Just posted: Our Canon EOS 70D hands-on preview article (355 comments in total)
In reply to:

57even: If you had a choice between better live view AF and better DR and noise performance, which would you choose?

@yabokkie: what do we know about the DR, SNR etc. of the 70D compared to what other brands are currently offering? All we know so far is what Canon says about noise in comparison to its own previous sensors, and I have seen nothing about its DR and low ISO performance.

Direct link | Posted on Jul 3, 2013 at 18:18 UTC
In reply to:

RedFox88: We now know what Canon has been working on these past few years while continuing to warm up the 18 MP design. They are always in the top for number of patents filed.

@utomo99: that is a roughly 2MP (1920x1080) video sensor; its photosites are excellent in low light by the simple strategy of being huge, and few in number.

Those same 19micron pixels would give 0.9MP in Canon's 22.5x15mm "EF-S" format. So no, not if interest for DSLR still images.

Direct link | Posted on Jul 3, 2013 at 18:10 UTC
On Just posted: Our Canon EOS 70D hands-on preview article (355 comments in total)
In reply to:

fjbeiderbecke: I see most of the references to the AF in regards to video. Will this make much of a difference to a still photographer?

I expect no IQ advantage over a normal 20MP design.
The image output is 20MP, not 40MP, because the signals from the two photodiodes at each photosite (under the same microlens and color filter) are merged into a single output value. If anything, the extra complications of putting two smaller photodiodes at each photosite instead of one bigger one is likely to lose some electron well capacity and some QE (light detection efficiency.)

P. S. I agree that the IQ of stills in LV mode could improve by being in better focus!

Direct link | Posted on Jul 2, 2013 at 20:15 UTC
On Just posted: Our Canon EOS 70D hands-on preview article (355 comments in total)
In reply to:

Roland Karlsson: Oops - commenting her goes fast. And your question is fast far away from the top. So - I reiterate my question.

Can you get all 40 MP as an output?

That would be fun, both for 3D images and depth detection.

The two photodiodes in each photosite are under the same micro lens (and the same color filter), so I doubt that they see spatially different information, just a difference in the incoming angle of that light, used for focus measurement. If so, there would not be any extra spatial detail to be got from reading all 40 million photodiodes separately.

Direct link | Posted on Jul 2, 2013 at 19:32 UTC
Total: 204, showing: 61 – 80
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