mapgraphs

mapgraphs

Lives in United States CT, United States
Works as a Illustrator, cartographer and graphic designer
Joined on Dec 15, 2011

Comments

Total: 66, showing: 1 – 20
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I guess Olympus North America didn't get the memo ; - ) :

http://www.getolympus.com/us/en/digitalcameras/slr/e-5.html

IN STOCK
Expected to Ship Week of May 17.
$1,699.99

http://www.getolympus.com/us/en/outlet/reconditioned-cameras/e-5-body-only-reconditioned.html

E-5 (Body Only) (Reconditioned)
Limited Quantities Available
Expected to Ship Week of May 17.
$1,279.99 NEW LOW PRICE!

Direct link | Posted on May 20, 2015 at 19:00 UTC as 143rd comment
On Sources of noise part two: Electronic Noise article (231 comments in total)

Richard, Rishi,

When you make statements like "most cameras have low upstream read noise" it would be helpful if you cited your source for the statement. And the same goes for every other statement of implied fact. Your sources should be a readily available so that anyone can easily access them.

Otherwise this is just an editorializing opinion piece. If it is intended as an opinion piece, that's fine, but that should be set out at the beginning.

Upstream read noise is a variable value, which can be affected by heat and the software used to interpolate sensor pixels:

"Interpolation works by using known data to estimate values at unknown points."[1]

"Image interpolation works in two directions, and tries to achieve a best approximation of a pixel's color and intensity based on the values at surrounding pixels." [ibid.]

[1] http://www.cambridgeincolour.com/tutorials/image-interpolation.htm

Direct link | Posted on May 13, 2015 at 13:16 UTC as 68th comment | 7 replies
In reply to:

Astrotripper: With this price tag, lets hope that corner performance is at least on the level of their 42.5, which was significantly better than 25 and 17.5 up to f/1.4.

And I want to see some serious sample photos.

Unlikely that a lens wider than the 25 or 17.5 is going to have corners like the 42.5 at f/1.4. Fast wides in all formats suffer vignetting and softness wide open. Even with that in mind the Noktons outperform quite a few pricey pieces of m4/3 glass at f/1.4 and f/2.0 versus f/2.8 and f/3.5.

If it is as good as the 17.5, it will be a great lens.

Direct link | Posted on Apr 3, 2015 at 00:09 UTC
On Olympus OM-D E-M5 II Review preview (800 comments in total)
In reply to:

jonnyjonno: so, what's the chance of a new version of the E-5 being built for all those with legacy 4/3 lenses and preference for optical viewfinder?

Well, does Olympus USA seem to think there's still a market? Or maybe Olympus is just hedging their bet?

"In Stock" (Only $1,699):

http://www.getolympus.com/us/en/digitalcameras/slr/e-5.html

Direct link | Posted on Mar 18, 2015 at 21:37 UTC

Now, if it was a Bessa D, to go along with a new 50/3.5 Heliar and a 35/1.4 Nokton...

Direct link | Posted on Feb 25, 2015 at 00:05 UTC as 101st comment | 2 replies
On Drone lighting could be coming soon to your studio article (126 comments in total)

Production Credits…

Lighting Director
Lighting 1st Assistant
Lighting 2nd Assistant
Lighting Pilot
Lighting Co-Pilot
Lighting Navigator
Lighting Programmer
Lighting Flight Crew
Lighting Props Grip

Direct link | Posted on Jul 17, 2014 at 13:20 UTC as 35th comment
In reply to:

Kurt_K: I think one thing that isn't often taken into consideration is just how many excellent models are available for peanuts on the used market these days. Surely that must be cutting into new sales to some degree. I would also agree with a previous poster in saying that some of these companies need to focus on fewer models and then push them with more aggressive marketing.

Would agree about the used market. My brand of choice has turned into KEH.

Direct link | Posted on Feb 24, 2014 at 18:57 UTC
On Using third-party lenses on Sony Cyber-shot a7 / a7R article (503 comments in total)
In reply to:

mapgraphs: In theory, one might assume that an experienced digital camera reviewer would know how to effectively use a manual lens on any digital camera. But perhaps, an opinion piece is sometimes simply a chronicle of the angst of having to learn how to use something that isn't set to iauto?

I don't have the a7 but after reading the experience here, I wouldn't hesitate to put a 5cm Summitar or anything else on it, set everything to manual and go. Sounds like a very capable camera for legacy glass. Once one spends the time required to become familiar with it.

If you had spent the time needed to learn and work with the functionality you wouldn't be asking. Which by the way I know because the cameras I have used legacy glass on operate in much the same fashion as you described.

It isn't about being right or wrong, it's about methodology that works well, or doesn't. You obviously think well of your efforts otherwise you wouldn't be here firing off responses to the collective unwashed.

I would suggest working with the camera for six months on a daily basis limited to one or two lenses, say a nice Ultron 35mm, then come back and write your opinion piece. Just for yourself.

Direct link | Posted on Jan 22, 2014 at 00:50 UTC
On Using third-party lenses on Sony Cyber-shot a7 / a7R article (503 comments in total)

In theory, one might assume that an experienced digital camera reviewer would know how to effectively use a manual lens on any digital camera. But perhaps, an opinion piece is sometimes simply a chronicle of the angst of having to learn how to use something that isn't set to iauto?

I don't have the a7 but after reading the experience here, I wouldn't hesitate to put a 5cm Summitar or anything else on it, set everything to manual and go. Sounds like a very capable camera for legacy glass. Once one spends the time required to become familiar with it.

Direct link | Posted on Jan 21, 2014 at 22:14 UTC as 168th comment | 4 replies
On Olympus PEN E-P5 Review preview (499 comments in total)
In reply to:

zavaell: I have an E-PL2 and E-PL3. I always have IS switched off and have never, ever had blur at any shutter speed that was not attributable to me. In other words at very slow shutter speeds (say, < 1/100) I can expect the possibility of camera shake even if I can usually achieve sharp shots at slower speeds. I find this E-P5 phenomenon puzzling and still not fully explained.

There is an inherent problem with making global statements based on opinion. For example, conjecture about blurry images maybe being caused by "shutter shock" or maybe created because there might be problems with image stabilization not correcting some vertical displacement, some of the time, with some lenses at some shutter speeds by some users is just that: conjecture.

The problem with the conjecture is that it doesn't answer why some users don't seem to have these problems and it doesn't explain for example, why all images taken at 1/160 with a specific lens aren't always blurry. If it's mechanical, the problem is always there. If it's user error, it may not be.

Sometimes reviews are more about someone learning how to use a specific camera than it is about the camera itself. There can be a value in that, but there are caveats, such as found at the bottom of DPR reviews: "Conclusion / Recommendation / Ratings are based on the opinion of the reviewer"

Direct link | Posted on Oct 4, 2013 at 21:00 UTC
On Olympus PEN E-P5 Review preview (499 comments in total)
In reply to:

pdelux: I think there needs to be clarified the difference between shutter shock and camera shake.
- the act of Pressing the shutter button causing vibrations through the camera is more like camera shake, as the camera is now moving. More likely with smaller/lighter bodies. This is what DPR is talking about and it is reasonable to expect the IS system should be able to compensate for such movements. Tripods and other methods can compensate as well.

- shutter shock, on the other hand is demonstrable even on a tripod, and and only involves the sensor moving due to vibrations caused butt the curtain opening and closing. Shutter shock is not an IS issue, though the IS may make it worse, or may not compensate for it enough. The root issue is the curtain.
Turn on Anti SHOCK which introduces a small delay should work around this issue.

I suspect part of the clue is that not everyone experiences "shutter shock" at certain shutter speeds. And the effect apparently is heavily dependent on lens used.

Light weight cameras with light weight lenses demand a deliberate shooting technique. Vibration from a shutter closing and opening sequence apparently only compounds poor technique. This is something that has been discussed quite a bit. And will probably continue to be.

Direct link | Posted on Oct 4, 2013 at 13:54 UTC
On Olympus PEN E-P5 Review preview (499 comments in total)

Robin Wong's review of the ep5:

http://robinwong.blogspot.com/2013/06/olympus-pen-e-p5-review-street-shooting.html

See his Initial Thoughts article also:

http://robinwong.blogspot.com/2013/05/olympus-pen-e-p5-initial-thoughts-and.html

Direct link | Posted on Oct 4, 2013 at 02:37 UTC as 167th comment | 7 replies
On Editorial: Why I can't stop taking iPhone Panoramas article (300 comments in total)
In reply to:

EssexAsh: or "why cant dpreview stop posting iPhone articles."

Really. GX7 First Impressions started back in August, still no full review. PEN E-P5 First Impressions, May, still no full review.

Direct link | Posted on Sep 24, 2013 at 22:14 UTC
On Olympus OM-D E-M1 Review preview (2081 comments in total)
In reply to:

rfsIII: This isn't a pro camera. It doesn't even have mirror lockup.

More comments hidden? Who knew.

Direct link | Posted on Sep 17, 2013 at 21:27 UTC
On Fujifilm X-M1 Review preview (220 comments in total)
In reply to:

Mirrorless Crusader: DPR why are you giving almost every half-decent camera a gold star now? Literally a large a majority of $600+ cameras now are getting gold stars, it completely dilutes the rating system and makes it look like you are just using it as a marketing ploy to sell cameras at Gear Shop. Can't you come up with a system where only a few cameras at most each year get the top award? Then we would actually know which you really think are best, because right now it looks like you're just trying to satisfy everybody and as a result satisfying nobody.

All that glitters...

Then there's the Previews that never seem to make it to completion...

Direct link | Posted on Sep 17, 2013 at 20:30 UTC
On Olympus OM-D E-M1 Review preview (2081 comments in total)
In reply to:

photohounds: People who flaccidly try to equate amount of materials used in a lens to its price, are the same "thinkers" who think a Ferrrari should cost the same as an-150 truck.
After all the F-150 has MORE materials in it - so it is "better", right?

FACT is, the smaller you make something excellent, the MORE it costs (almost universally).

The f 0.95 DOF tirade is also getting stale (well it was a year ago).
I shot a theatre production this week, no DOF "issues" as imagined by pixel-peeping Bricks 'n' bazookas fans - none at all ...

To judge pictures instead of uninformed opinion:

At the link, select "performing arts", and "footloose", basically unprocessed except for density and a little NR ands I turn the camera NR off (better when there is smoke in the image).

Or here ...
http://photohounds.smugmug.com/Performing-arts/Footloose-Supa

Circle of yabokkie?

Direct link | Posted on Sep 15, 2013 at 17:53 UTC
On Olympus OM-D E-M1 Review preview (2081 comments in total)
In reply to:

photohounds: People who flaccidly try to equate amount of materials used in a lens to its price, are the same "thinkers" who think a Ferrrari should cost the same as an-150 truck.
After all the F-150 has MORE materials in it - so it is "better", right?

FACT is, the smaller you make something excellent, the MORE it costs (almost universally).

The f 0.95 DOF tirade is also getting stale (well it was a year ago).
I shot a theatre production this week, no DOF "issues" as imagined by pixel-peeping Bricks 'n' bazookas fans - none at all ...

To judge pictures instead of uninformed opinion:

At the link, select "performing arts", and "footloose", basically unprocessed except for density and a little NR ands I turn the camera NR off (better when there is smoke in the image).

Or here ...
http://photohounds.smugmug.com/Performing-arts/Footloose-Supa

Like it or not, the range of DOF (that which is perceived to be focus) is relative to the size of the Circle of Confusion. Larger format, larger circle. Smaller format, smaller circle, and if one is not sure what that means, check with Zeiss:

http://www.zeiss.com/c12567a8003b8b6f/embedtitelintern/cln_35_bokeh_en/$file/cln35_bokeh_en.pdf

Direct link | Posted on Sep 15, 2013 at 16:01 UTC
On Olympus OM-D E-M1 Review preview (2081 comments in total)
In reply to:

Henry Richardson: A very good catch was posted in the link below and it is also a good point concerning the description of the Canon 70D LV AF and Olympus E-M1 AF with 4/3 lenses and adaptor:

http://www.dpreview.com/forums/post/52155871

Maybe the wording used in the 70D and E-M1 articles is just sloppy or maybe there is a strange inconsistency. Is the 70D AF disappointing or is the E-M1 similar to the 70D and "essentially as fast and accurate as conventional, optical-viewfinder phase-detect AF"? Thanks for clarifying this.

The money quote from the 70D Preview:

http://www.dpreview.com/previews/canon-eos-70d/3

"This, of course, is the million-dollar question - technology can be as conceptually clever as you like, but ultimately all that matters is whether it works in the real world. So far we've only had our hands on a non-final EOS 70D for a relatively short time, but our initial impressions are pretty positive. With the EF-S 18-55mm f/3.5-5.6 IS STM kit zoom, the camera is clearly much faster and more decisive at focusing in Live View than any previous EOS - or indeed any other SLR."

Direct link | Posted on Sep 14, 2013 at 21:53 UTC
On Olympus OM-D E-M1 Review preview (2081 comments in total)
In reply to:

Adrian Van: For more EM1 photos/reviews: Check out RobinWong.blogspot for photos of C-AF tracking of skate boarders and many photos from the new EM1 for sport and moving people/vehicles and also macro photos in his first 2 articles on EM1. It shows the large buffer around 41 photos in Raw S-AF and 50 Raw photos in C-AF high speed mode, and you can download images for review.

CAF looks like it works very well in his tests. Robin now an employee of Olympus only recently (a few blog posts ago) now has even faster access to Olympus gear it seems for review. Worth checking out and a great read.

Great job, finally getting that job at Olympus, you certainly do deserve it Robin!!

Thanks for the heads up - link to Robin's review, part 1:

http://robinwong.blogspot.com/2013/09/olympus-om-d-e-m1-review-introduction.html

Like the Ming Thein preview, well worth the read.

Direct link | Posted on Sep 13, 2013 at 14:54 UTC
On Olympus OM-D E-M1 Review preview (2081 comments in total)
In reply to:

marike6: Two things stand out form the RAW files:

* the higher per-pixel sharpness and detail of the D7100 vs the E-M1.
* And how biased to red the EM-1 RAWs are.

(ducks)...

@ marike6
For someone who doesn't "care" you seem to spend a lot of time and effort, not caring. And not caring, and not caring.

A true comparison of output is done with jpg not RAW - if you want to compare the default the settings of the manufacturers. RAW files are cooked, by the software, by the users ability to work with the software and very dependent on display card and monitor. If you're not comparing prints, you're comparing pixels and that's about as meaningless as it gets.

If the e-pl5 output you were getting from RAW was too red, the first place to look is your workflow, methodology and software settings.

If I was shooting a D800, I sure wouldn't be arguing with Olympus users. However, definitely keep reminding us of our errors...

Direct link | Posted on Sep 12, 2013 at 20:48 UTC
Total: 66, showing: 1 – 20
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