audiobomber

audiobomber

Lives in Canada Sudbury, ON, Canada
Joined on Jan 27, 2008

Comments

Total: 157, showing: 1 – 20
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If the Trifecta DSLR bag would hold my 70-200 f2.8 or 300mm f4 with hood mounted *in shooting position*, it would be exactly what I want.

I have a Think Tank Streetwalker backpack which holds a DSLR and tele lens, with hood mounted in shooting position, but I have to remove the bag to get to the camera, so it's no good in the field. I have a sling bag which gives me reasonable access to the camera, but won't hold my long lenses.

I want to combine the sling and backpack advantages. The Trifecta comes closes, but just short of the mark.

Direct link | Posted on Jun 17, 2015 at 13:48 UTC as 3rd comment
On Sony RX100 IV compact shoots 4k, uses a stacked sensor article (303 comments in total)
In reply to:

Pandimonium: Stacked means like foveon I suppose? and a new BSI cmos for FF. I'd like to see the studio shots for these instead of a Leica ;). Suppose we'l see a RX2 soon too.

No claim of improved DR or SNRv in the press release? Odd.

Direct link | Posted on Jun 10, 2015 at 21:48 UTC
On Readers' Showcase: Alexander Jikharev article (35 comments in total)
In reply to:

BobYIL: I wish I had one-tenth of the talent to create wonders with a modest 5-year-old camera like this photographer instead of the money to afford 10 times more expensive gear he uses..

> Check DXO-mark. The K-5 gets a 82. More than the K-3.

Where 5 points = 1/3 of a stop. The K-3 is a better camera in most ways.

Really nice images in the feature. #4 is my favourite. I'd like to see it blown up to poster size. Better yet, I'd like to have been there.

Direct link | Posted on Jun 8, 2015 at 20:49 UTC
On Nikon D7200 Review preview (526 comments in total)
In reply to:

ritholtznue: Hi,
Are all AF points are cross type? Based on specs center 15 are cross type. Any idea why Nikon made every focus point sensitive to -3EV instead of making all cross types. I guess, it is still amazing. I am just trying to understand their decision to make single focus points sensitive to -3EV which looks like a rare case.

Can we expect to see low-light AF tests in future reviews?

Direct link | Posted on Jun 4, 2015 at 20:30 UTC
On Nikon D7200 Review preview (526 comments in total)
In reply to:

Horshack: Regarding the raw dynamic range, the default ACR/LR conversions of the D7200 look noticeably worse than the D5500 for the -6EV studio scene. This is due to a magenta shadow cast, likely from uncalibrated/incorrect per-channel black points in the raw file. Applying a -2 ACR shadow tint (toward green) improves the D7200 image significantly, with lower noise than the D5500 image. However the D7200 appears to be +.40EV brighter than the D5500, both in the shadows and highlights - can't tell if this is from different ambient lighting intensity or an ACR conversion quirk.

Here is a 100% crop comparison of the two, both converted via the Camera Neutral profile and downsampled to 8MP, exposure adjusted -.40EV on the D7200 vs the D5500:

http://horshack.smugmug.com/photos/i-XgfJbtr/0/O/i-XgfJbtr.jpg

I wonder if the differences in brightness and processing are due to Nikon wanting the D7200 to put up the best possible scores on DXOMark? Exaggerated ISO numbers, raw noise reduction and tone curves seem commonplace these days.

Direct link | Posted on Jun 4, 2015 at 17:47 UTC
In reply to:

Prairie Pal: It was a good try 'cept the acting was ho-hum and they dragged it out too long.I think the main point was that the film was shot on an E-M5.

I didn't make it to the end. I suspect a lot of people will be too bored with the same lame joke retold in 47 ways and won't bother to finish either.

Direct link | Posted on May 21, 2015 at 05:24 UTC
In reply to:

Johannes Zander: Silly at best!

I agree. That silly little joke was not worth all the effort of creating the video.

Direct link | Posted on May 21, 2015 at 05:16 UTC
On Field Test: Sigma 19mm, 30mm and 60mm F2.8 DN lenses article (160 comments in total)
In reply to:

Old Baldy: I've enjoyed the Sigma 19mm 2.8 Art on my little NEX-5N, except for one major issue, for me.

As I love to shoot predominately in MF mode, I need a lens that works well in full manual, and the issue with the ultra lightweight 19mm, is that the plastic lens barrel is susceptible to a roughness when even gently squeezed by the fingers to rotate the focus ring. The focus ring is not easily moved without a little tab on it like the Voigtlanders or Leicas, or the serrated grip surface of the Sony or Zeiss lenses, so one has to grip the smooth focus ring from both sides by the finger and thumb to comfortably adjust focus - and that very light pressure actually deforms the lightweight plastic focus ring enough to make the focusing rough and difficult to find perfect focus, in my experience.
I'm not sure if this is a specific lens issue, but it would seem to me that the barrel integrity will not change from one lens to another, and that the lens is simply not designed for solid MF focusing.

> "do you find any roughness or stickiness when using full manual focus with the 60mm?"

No, not at all. Focus is as good as it gets with focus by wire. Very smooth and quite responsive. I can't see how anyone could deform the focus ring with finger pressure. It is solid, no deflection at all.

There is no manual override, but does the a6000 even support that feature? None of my lenses do it. I configured button C2 for MF.

Direct link | Posted on May 14, 2015 at 19:32 UTC
On Field Test: Sigma 19mm, 30mm and 60mm F2.8 DN lenses article (160 comments in total)
In reply to:

andrzej bialuski: You can now buy this lens for a mere $7700.00

http://www.rakuten.com/prod/sigma-30mm-f-2-8-ex-dn-lens-kit-for-olympus-micro-4-3-cameras-package/243155391.html?listingId=356400002&sclid=pla_google_CircuitStreet&adid=29963&gclid=CjwKEAjwg7yqBRCu5NmlgMm6i08SJADDEudZ7vPF2y2IjDkLfPTB2qI_-5hkRBwRhVDWu3JuZxs0DBoCKfzw_wcB

What the heck?????

Well you also get 3 filter rings. ;-)

Direct link | Posted on May 11, 2015 at 02:17 UTC
On Field Test: Sigma 19mm, 30mm and 60mm F2.8 DN lenses article (160 comments in total)
In reply to:

Old Baldy: I've enjoyed the Sigma 19mm 2.8 Art on my little NEX-5N, except for one major issue, for me.

As I love to shoot predominately in MF mode, I need a lens that works well in full manual, and the issue with the ultra lightweight 19mm, is that the plastic lens barrel is susceptible to a roughness when even gently squeezed by the fingers to rotate the focus ring. The focus ring is not easily moved without a little tab on it like the Voigtlanders or Leicas, or the serrated grip surface of the Sony or Zeiss lenses, so one has to grip the smooth focus ring from both sides by the finger and thumb to comfortably adjust focus - and that very light pressure actually deforms the lightweight plastic focus ring enough to make the focusing rough and difficult to find perfect focus, in my experience.
I'm not sure if this is a specific lens issue, but it would seem to me that the barrel integrity will not change from one lens to another, and that the lens is simply not designed for solid MF focusing.

> "light pressure actually deforms the lightweight plastic focus ring enough to make the focusing rough and difficult to find perfect focus"

I only have the 60mm, but there's no plastic on the focus ring or anywhere else. It's all metal. The 19mm looks similar to me. It doesn't appear that you have the current version.

Direct link | Posted on May 11, 2015 at 02:15 UTC
On Field Test: Sigma 19mm, 30mm and 60mm F2.8 DN lenses article (160 comments in total)

The Sigma 60mm performance is not demonstrated properly on m4/3. Sharpness of the 60mm DN on various bodies, per DXOMark:

Panasonic DMC-GH3 = 9mp
Olympus OM-D E-M1 = 10mp
Sony a6000 = 16mp

http://www.dxomark.com/Lenses/Compare/Side-by-side/Sigma-60mm-F28-DN-A-Sony-E-on-Sony-A6000-versus-Sigma-60mm-F28-DN-A-Mount-43-on-Panasonic-Lumix-DMC-GH3-versus-Sigma-60mm-F28-DN-A-Mount-43-on-Olympus-OM-D-E-M1___1104_942_1103_842_1103_909

A 60% increase in resolution is massive, and the larger sensor allows the 60mm to show how it outclasses its stable mates. Sharpness measurements are only 9 and 10mp for the 30 and 19mm Sigmas on an a6000.

The 90mm equivalent view is ideal for portraits, and there's no need to stop down. The Sigma 60mm is tack sharp across the frame, with negligible CA's from wide open. You can see this for yourself at DXOMark, in the MEASUREMENTS > FIELD MAP tabs. I have no problem calling this an Art lens. Sigma knocked it out of the park with this one.

Direct link | Posted on May 10, 2015 at 14:35 UTC as 20th comment | 2 replies
In reply to:

ogl: Future version of DFA* 24-70/2.8 for Pentax

Except the Pentax will be weather-resistant, with superior coatings for better flare resistance, more accurate colours and punchier contrast.

And a higher price.

Direct link | Posted on May 9, 2015 at 04:59 UTC
In reply to:

Boxbrownie: Oooo great, must dig out all my old enlarger lenses........save a fortune!

And I'll have to try my Pentax DA 40mm f/2.8 Limited with my a6000.

Direct link | Posted on May 6, 2015 at 12:01 UTC

They look like children's lunch bags.

PS The image link is broken.

Direct link | Posted on Apr 30, 2015 at 12:10 UTC as 2nd comment
In reply to:

Horshack: I use ETTR extensively on my original 5D bodies. Due to JPEG histogram issues mentioned in the article I recommend that everyone calibrate their camera's raw highlight clipping by shooting typical scenes with varying overexposure and then processing the images in their preferred app to see correlate actual clipping to what they see on the histogram. Another method is with Iliah Borg and Co. RawDigger app; there's a great 3-part article on this here: http://www.rawdigger.com/howtouse/rawdigger-histograms-what-is-the-raw-histogram.

My field ETTR metering technique is to leave the camera on spot metering. I meter the brightest highlight I want retained, which puts that highlight at middle grey, then dial in an exposure +2EV to +3EV above that depend on the reflectivity of scene and the camera I'm using.

Here are some 5D ETTR examples (before+after):

http://horshack.smugmug.com/photos/i-NXkhBhH/0/O/i-NXkhBhH.png

http://horshack.smugmug.com/photos/i-zhPzj4M/0/O/i-zhPzj4M.png

Horshack, your samples are definitely worth 1000 words in explaining ETTR. I will give it a try.

Direct link | Posted on Apr 28, 2015 at 12:01 UTC
On Hands-on with the Pentax K-3 II article (521 comments in total)
In reply to:

drummercam: Another Pentax, like the K-S2, with an exceptionally accessible opening price point for a excellent feature set. Rugged stuff, too. The advertised claim "the K-3 II also functions at temperatures as low is -10C/+14F" is probably an understatement. I've used the K-3 at minus 8F with no problems.

I have regularly used my Pentax cameras in -40 degree temperatures, for hours at a time. I only had trouble once. I was shooting an event in brutally cold weather, and kept ducking in and out of a warm lobby. Not surprisingly, my K20D started acting up. My fault really, I should have stayed outside in the cold to avoid condensation.

Direct link | Posted on Apr 25, 2015 at 02:32 UTC
On Hands-on with the Pentax K-3 II article (521 comments in total)
In reply to:

audiobomber: Hopefully the K-3 II review will be written by Dan Bracaglia and Rishi Sanyal. They did a great job on the A77 II review, especially the focus testing. The K-3 was sabotaged by all the wrong settings for the AF-C test.

Clearly Pentax have made an effort to improve AF with the new lenses and with Z-axis performance on the K-3 II. But IMO it is still a very capable system. I am quite confident the K-3 would murder the EM5-II for shooting roller derby.

I tried shooting BIF and sports with AF Hold OFF and there was no tracking. With AF Hold on HIGH, the K-3 sticks to a hockey jersey like crazy. I have little trouble shooting a dozen and more BIF shots in a sequence. I always use Expanded Area AF.

These were shot with the DA*300 and 1.4X TC:
https://plus.google.com/u/0/photos/100586096103361553535/albums/6133232106037775489

Direct link | Posted on Apr 24, 2015 at 12:16 UTC
On Hands-on with the Pentax K-3 II article (521 comments in total)
In reply to:

audiobomber: Hopefully the K-3 II review will be written by Dan Bracaglia and Rishi Sanyal. They did a great job on the A77 II review, especially the focus testing. The K-3 was sabotaged by all the wrong settings for the AF-C test.

Sorry, Richard, I can see that the word "sabotaged" is inflammatory. I did not mean to imply that anyone deliberately tripped up the K-3. Nevertheless, the settings that were used, AF Hold OFF, SR ON, handicapped the camera such that it could not track.
I don't think I used the word "guessing", but let's face it, there is a lot of guessing when a reviewer picks up a new camera to test. You are not a regular Pentax user, not someone who has owned a K-3 for a year, not an experienced sports shooter judging by the Roller Derby video.

It's entirely possible the K-3 is not up to semi-pro DSLR tracking. but I have shot sports and hundreds of BIF images with a high success ratio. I own an a6000 which is highly touted for its tracking ability. The K-3 is quite a bit better IMO.

PS I am extremely pleased to hear that DPR is working on a better AF testing regimen. You said the same thing about your image comparisons, which are now SOTA. Hopefully the new AF tests will be as fair and useful.

Direct link | Posted on Apr 23, 2015 at 19:30 UTC
On Hands-on with the Pentax K-3 II article (521 comments in total)
In reply to:

hoxito: According to the "Live View" section on http://news.ricoh-imaging.co.jp/rim_info2/2015/20150423_007349.html (official announcement from Ricoh), there is (finally!) a "Focus peaking" function that can be turned ON and OFF - now THAT is what I call great news!

@ hoxito
There is no focus peaking of any sort in any variety of K-5 (5, II, IIs). The quote you posted refers to video, not Live View. Peaking in Live View acts like any other camera with the feature. Unfortunately FP is limited in video recording as per the quote. I expect the K-3 will be the same as the K-3 in this.

Direct link | Posted on Apr 23, 2015 at 18:30 UTC
On Hands-on with the Pentax K-3 II article (521 comments in total)
In reply to:

hoxito: According to the "Live View" section on http://news.ricoh-imaging.co.jp/rim_info2/2015/20150423_007349.html (official announcement from Ricoh), there is (finally!) a "Focus peaking" function that can be turned ON and OFF - now THAT is what I call great news!

Several previous bodies have had FP in Live View; K-01, K-30, K-500, K-50, K-S1, K-S2, K-3.

Direct link | Posted on Apr 23, 2015 at 16:47 UTC
Total: 157, showing: 1 – 20
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