Tag: test

Sony A7R…Great Camera…Loud Shutter

Dad...that camera is noisy!

Dad…that camera is noisy!

 

So long story short…a Sony A7R with Sony Sonnar T* FE 35mm f/2.8 ZA lens showed up in December. Immediately noticed it had a very loud shutter, and you could feel it vibrate in your hands. Seemed lame for such an expensive camera. I sent it back and bought a Sony A7 24MP body instead. It has a different shutter, quieter and no chance of vibration.

Camera shake from the shutter would probably only happen with longer focal length lenses at certain shutter speeds…but again…I was worried it may bother me in the future so sent it back.

Download RAW files here

Here are some sample JPEG’s:

tripod, 1/160th, f/5.6, iso 50

tripod, 1/160th, f/5.6, iso 50

 

tripod, 1/10th, f/8, iso 50

tripod, 1/10th, f/8, iso 50

 

following are all handheld…

Sony-a7r-35mm-zeiss-review-Reeder_131214_051

Sony-a7r-35mm-zeiss-review-Reeder_131214_054

Sony-a7r-35mm-zeiss-review-Reeder_131214_056

Sony-a7r-35mm-zeiss-review-Reeder_131214_061

 

A7 w/ 55mm f/1.8 Zeiss lens review to follow.

 


Areca ARC-8050 8-Bay Thunderbolt to 6Gb/s SAS RAID Storage Review

 

 

In my last post I reviewed external thunderbolt storage devices for our Imac capture station, none of which worked correctly. I came across this Areca 8 bay box on the OWC website. This looked more “promising” than the Pegasus R6 :) sorry Promise Tech…had to do it. Costs around $1500/free shipping. Price is very close to the Pegasus R6 when you take into account 8 bays vs 6 bays. Its empty which is how I would prefer it anyway. Lets me use my existing drives. Here are some quick specs from Areca’s website:

  • The ARC-8050 incorporated on-board high performance dual core 800Mhz ROC storage processor and with 1GB DDR3-1333 SDRAM memory on-board to deliver true high performance hardware RAID.
  • Bootable
  • RAID level 0, 1, 1E, 3, 5, 6, 10, 30, 50, 60, Single Disk or JBOD (just a bunch of disks aka passthru)

Check out their website, they have it all spelled out. Some of the other manufacturers don’t have real detailed spec sheets showing whether they are bootable, JBOD capable, etc. Areca’s was pretty clear. The drive trays have mounting holes for 2.5″ and 3.5″ drives. Seems like a nice piece of hardware.

There were a couple of hiccups to get it going, which ended up being a default being set incorrectly. But from the first time it started up, there was a noticeable difference in operation and a feeling of reliability. The Pegasus box was just the opposite.

 

Passthru created
Passthru created

 

We’ve had it running for about two months and haven’t had any issues. In the first bay we placed a 90 GB 6G SSD OCZ Vertex 3 to run the OS (running around 400 MB/sec read & write). The next bay has a HST 4 TB Time Machine SATA drive. Next bay is empty (may use for hot spare or add another drive to the RAID 5 array). Then we have 5  2TB Hitachi SATA HD’s in a RAID 5 setup (these will be used for working still and video files, running around 415 MB / sec read & write).

 

Arc-8050 Thunderbolt rear view
Arc-8050 Thunderbolt rear view
Areca ARC-8050 Packaging
Areca ARC-8050 Packaging

 

I still don’t trust the RAID 5 as a single solution for storage and backup. You still need at least two other copies of all data you don’t want to lose, one of which off site at all times.

Here is the iMac machine specs we are using:

 

iMac 27 inch, Late 2012
iMac 27 inch, Late 2012

 

Our first attempt at RAID 5 with factory defaults and using their Quick Function > Quick Create option was not successful. The ARC – 8050 would start to initialize for an hour or so then freeze at exactly 5.6%. The box would freeze and crash the iMac. Fun. Now this product just started shipping so they will get cut some slack. The problem was also resolved quickly. See below.

 

Areca Raid Storage Manager
Areca Raid Storage Manager

 

Long story short, after emailing Areca’s tech support over then next couple of days and running some more tests we found a fix. Under System Configurations > Disk Write Cache Mode needs to be set to Disabled, not set to SAS and SATA (which is the default). After changing that it initialized properly the first time and haven’t had any problems since.

 

Disk Write Cache Mode
Disk Write Cache Mode

 

If you are looking for a fast external thunderbolt enclosure with all of the bells and whistles…this appears to be the ticket…for now at least.

Jordan

June 2013


Areca Moment – High Performance External Storage Options Review for iMac & Macbook Pro – USB 3.0, Thunderbolt, RAID, eSATA

Areca ARC 8050 front panel

Areca ARC 8050 front panel

 

A few months back, we put a new 27″ iMac (late 2012) 3.4 GHz Intel Core i7 model into service at the studio. Duties would include tethered capture with Phase One digital backs & Canon DSLR’s as well as various post production tasks – Photoshop, Video Editing, Lightroom, etc.

The computer came with a 3 TB internal SATA hard drive. My hope was that with the addition of USB 3.0 ports and Thunderbolt we would have plenty of reasonably priced options to choose from for some additional storage needs. Well, that was easier said/thunk than done.

Pretty simple if you want to grab one or two external 3 or 4 TB USB 3.0 hard drives from Western Digital, G-Tech, Seagate, Hitachi, etc.  The problem comes when you realize you don’t want to use up all of your USB 3.0 ports on a few drives and or you want to get a serious performance boost. Nice to have at least one port free for connecting flash card readers, monitor calibrators, tethered capture, wacom tablet, etc. There are of course the Thunderbolt ports, but even thought they’ve been around for over 2 years, there is still a pretty weak selection to choose from. And most are still quite expensive compared to a similar drive in a USB 3 package.

Speaking of a lack of ports on the new iMac, it’s real pretty and all but I would have rather it been an inch or two thicker and have a few more ports. Actually it needs to be thick enough to have room so you have 2 owner accessible hard drive bays. Maybe one 3.5″ and one 2.5″, at least 2 or 3 more USB 3.0 ports and 1 eSATA port. I know it looks thin and cool, but the reality is it’s going to be parked against a wall 90% of the time and by the time you plug in 4 or 5 things back there it looks messy. Sure it looks awesome in the product photos with no cables :)

 

Business End

Business End

 

I know some of you are thinking, why didn’t you just go buy a Mac Pro? A few reasons. Though they just announced a new one, it hasn’t had a refresh in a long long time. And as of late 2012 there was no Mac Pro with USB 3.0 ports and they are more expensive. For this machine whose primary purpose is an image capture station…a fully loaded Mac Pro seemed like overkill. Plus, on a big shoot its much easier to bring the iMac along. I will comment on the new Mac Pro announced today in the future.

Ideally at a minimum, this machine would have a separate reasonably fast volume for each of the following: OS, scratch, working files (stills and movies), Time Machine and a swapper backup drive bay. The following are a few options tested.

 

 MacGurus Burly 4 Bay Hot Swap Firewire 800 enclosure 

Existing MacGurus Burly 4 bay FW800

Existing MacGurus Burly 4 bay FW800

 

I’ve had this Burly enclosure collecting dust for the last couple years, worked fine when the only option was FW800. Never had any problems with it other than the fact that it was slow ~ 80 MB/sec read & write. I checked out MacGurus website and spoke to them on the phone. They recommended to swap out the FW800 bridge for a “MGBurly UPM Upgrade kit  Burly USB 3.0 and eSATA upgrade kit = Lycom USB3/eSATA port multiplier to up to 5 drives for $115”

 

MacGurus Burly Box rear

MacGurus Burly Box rear

 

This would allow a single USB 3.0 cable to connect to 4 drives and probably achieve around 250 – 300 MB/sec read write speeds for all drives combined. Not too bad, especially considering the cost. I asked them if there were any issues…they said no :)  I ordered it, installed it. Seemed to work ok, but over the next couple of weeks we were having issues with multiple drives randomly ejecting, dismounting, etc. I have since contacted MacGurus and explained my problem, they replied and said it appeared to be a common issue (hmmm…not what I was told when I bought it). He said there was a fix using an app called Keep Drive Spinning. Having to run an app to keep my drives from ejecting makes me want to vomit. Even if it works and is simple. No thanks. MacGurus should probably put that disclaimer on their website product page. Thank you time vampire #1, next…

 

Promise Technology Pegasus R6 – RAID Storage with Thunderbolt

Promise Tech Pegasus R6

Promise Tech Pegasus R6

 

Enter the Pegasus R6 w/ Thunderbolt. Its a 6 Bay enclosure with (6) 1 TB SATA drives installed. If I remember correctly these are what Apple waved around when they announced Thunderbolt, showing you what would be offered. I should of just bit the bullet from the get go and went this route, so I thought. I noticed newegg.com had some factory refurbished / reconditioned units with warranty which would save a few hundred dollars. Normally I would stay away from refurbs, but I thought in this case I would make an exception. I don’t have the best luck buying new, so why not try refurbs? Maybe the factory has taken a better look and ensured this one works correctly before sending it out again? ;)

Showed up and looked nice. As always I read the instructions, check firmware, current software, updates, etc. I could write a short story about what it was doing but don’t want to take all day. In short, it seemed possessed. Throwing multiple error lights, telling me it was overheating, etc.  Spent hours trying to make it right…gave up and sent it back.

Another one shows up a week later. This time totally different issues. The box itself seemed OK, but 2 of the 6 drives they shipped with it were reported as bad by the Pegasus display and utility. FWIW, tried it on two different thunderbolt computers with 10.8.2 and 10.8.3. Wow what a huge waste, to think those units leave the Promise Tech facility after being “fixed/inspected?”  Stinks. Time vampire #2, next up the solution…


Canon 5D Mark III Test – ISO

1/60 sec, f/4, iso 800, Canon 24-105mm

 

The new Canon 5D Mark III showed up recently. So far so good. The following items are improved, AF,  frames per second, audio capability, high ISO performance, construction/weather seals, LCD screen, etc.

1/640 sec, f/8, iso 320, Canon 24-105mm

 

 

 

 

 

 

 

 

 

For the first round of tests we have some in studio ISO samples. ISO 100-12800, 50mm Canon f/1.2 L lens (focused with live view on the rodenstock loupe), processed in Lightroom 4.1. Full Res JPEGs with default sharpening applied, no other tweaks.

5d Mark III test shot

ISO 100, 50mm f/ 1.2

 

 

 

 

 

 

 

 

click photo for full res jpeg

Click here to download a zip of the RAW’s ISO 100-12800

I decided to do a print test on our big Epson with an ISO 3200 file.  The native file size @ 180ppi gives us about a 21″ x 33″ print.  No interpolation. After a little adjustment on the Luminance in Noise Reduction in Lightroom  and some sharpening, I made a print.

What the print revealed was that with proper technique, good optics, etc. a beautiful large print can be produced from the Mark III even at ISO 3200 to 6400. There was just a slight “grain” look at ISO 3200, and a little “grainier” at 6400.  But, overall it exceeded my expectations.

1/1000 sec, f/2.8, iso 640, Canon 70-200mm f/ 2.8 IS

 

 

 

 

 

 


Mamiya / Phase One AF 28mm f/4.5 Aspherical Lens Review

I’m a real sucker for good wide angle lenses, and I’m constantly searching for a few ideal wide lenses for landscape and architectural shoots.  I’ll settle on something I really like, then get a new medium format digital back or camera that puts a hurt on my once “great” lens. So the search seems to go on forever.

The following short test is for the Mamiya AF 28mm f/4.5 Aspherical Lens, which Mamiya started producing a few years ago. Phase One makes one with their name on it as well…same lens. Now that Phase One and Mamiya have one website, I guess they’ll probably just produce one flavor now.  The lens will be used with a Phase One P65+ 60 megapixel medium format digital back.

In the past I’ve used the Mamiya 35mm AF lens as well as a Cambo RS with both the Schneider 5,6/24XL Apo-Digitar and the Schneider 5,6/35 XL Apo-Digitar.  I must say the Cambo RS setup with those lenses and a Phase One P45 back is awesome. There are some drawbacks with the Cambo RS though. Slower to work with, Lens cast issues (which are correctable but still a hassle) ergonomics, wires and cables aplenty as well as major light fall off in the corners. Yes you can use an expensive center filter and or correct in post.  The center filter takes around a 2 stop loss, and correcting in Capture One can add some noise in the corners as its basically brightening the corners around 2 stops. Maybe a review of that camera in near future.

I will be keeping the Cambo as its hard to beat in terms of quality, but there are times I need something a little faster or less clumsy. Basically the Cambo is like a traditional view camera, the Mamiya is an SLR.

Test setup all files:

Phase One AF body

Phase One P65+, ISO 50, RAW

Heavy tripod, cable release, mirror lock up, self timer, AF focus confirmation, slight breeze.

Capture One 6.3.3 on MAC, default lens correction settings= chromatic aberration enabled, Distortion enabled, all others off.

Default sharpening enabled, Amount 140, Radius 1, Threshold 1

 

Main Shot @ f/16  (a real beauty, I know):

Download the RAW file here

Download a JPEG here (full resolution, max quality, sRGB)

 

 

Below are 100% crops of the center (also what I focused on), the four different images are comparing different f stops (f/4.5, f/8, f/16, f/32)

100% Center Crop

 

Below are 50% crops of the center (also what I focused on), the four different images are comparing different f stops (f/4.5, f/8, f/16, f/32).

50% crops were done because this seems to be a good indicator of how the actual print will look on screen if printed at native size @ 240ppi on an Epson. Actual print size is around 28″ x 37.5″

50% center crops

 

Below are 100% crops of the bottom left, the four different images are comparing different f stops (f/4.5, f/8, f/16, f/32)

 

What I see:

F/4.5 – Some vignetting (correctable in post, doesn’t really bother me). Not as sharp as other apertures but still useable if needed.

F/8 – Really sharp in the center, slight vignetting, blue drill in corner not tack sharp mainly because of focus/distance not optical issues.

F/16 – Looks not too bad, chromatic aberrations seem under reasonable control in the trees too. There was a little breeze so look for stationary subjects as indicators of true sharpness. Blue drill in bottom left corner is pretty sharp. f/11 is obviously somewhere in between.  More than likely I will use f/8-f/16 in real world situations.

F/32 – Diffraction pretty obvious at 100%, at 50% its not horrible. I almost never use the smallest aperture on any lens I own.

 

After reviewing the results on screen, I decided to print a large print of roughly 28″ x 37.5″ @ 240ppi (which is the native pixel size) on my Epson 9800, premium luster epson paper, 2880i, profiled, etc.  I ended up using the f/16 image, I know its not necessarily the sharpest in the center but I was guessing at that print size and adding a little output sharpening it would be a good compromise.  For most of my landscape work I prefer most of the scene in focus.

Pixel peeping on screen only shows so much, I can’t remember the last time I went into a gallery and asked for a digital file of the work on display so I can zoom into 100-200% and make sure everything is in order. If it looks good hanging on a wall at a large print size, it’s good enough for me.

Overall the print looks great, at normal viewing distances and at up close pixel sniffing ranges.

– Jordan

 

 


All reproductions of photographic images or other artwork created or owned by Jordan Reeder (Reeder Studios, LLC) appearing on this website are copyright Jordan Reeder (Reeder Studios, LLC) 1998-2012. All Rights Reserved. The material on this website may not be reproduced, displayed, publicly performed, reset, adapted, proxy cached or otherwise used in any way by any person or entity except with the prior express permission of Jordan Reeder (Reeder Studios, LLC). All Rights Reserved.
Jarrah theme by Templates Next | Powered by WordPress