The Canon EOS 5D Mark IV
has arrived and one of the first tasks was to evaluate the frame rate and buffer depth performance.
I thought I would share these results with you today.
To test the Canon EOS 5D Mark IV's 7 fps drive mode and 17/21 (21 with UDMA 7 CF card) frame RAW file buffer specs, the camera was configured to use ISO 100, a 1/8000 shutter speed (no waiting for the shutter operation),
a wide open aperture (no time lost due to aperture blades closing) and manual focus (no focus lock delay).
The lens cap remained on (insuring a black file and the smallest file size) and a freshly-formatted fast memory card was loaded.
The tested rates and capacities are about best-obtainable for the camera and card combination being used.
Reducing any concerns about the buffer depth:
using a Lexar 64GB Professional 1066x UDMA 7 Compact Flash Card
(Max. Read/Write Speed: 160/155 MB/s), the 5D Mark IV captured 36 frames in 4.98 seconds to precisely match the rated speed and, great news, far exceed
the rated buffer depth.
In addition, with this Lexar card installed, additional frames continued to be captured at a 4.4 fps rate.
If DPRAW capture is enabled, the frame rate using the same card drops to 4.9 and the buffer wall is hit at only 9 frames.
Subsequent frames are captured at a 2.2 fps rate.
The larger-sized DPRAW images definitely impact performance in this regard.
Using a Lexar 128GB Professional 1000x UHS-II SDXC U3 Memory Card
the 5D Mark IV captured 21 frames in 2.85 seconds to once again match the rated drive speed and also match the UDMA 7 buffer depth rating.
Using this card, the post buffer-filled frame rate was 1.6 fps.
Using a Sony 32GB Class 10 UHS-I (SF32UX) SDHC Card
(Max. Read/Write Speed: 94/45 MB/s),
the 5D IV captured a respectable 24 frames in 3.28 seconds to again precisely match the rated drive speed and exceed the rated buffer depth by a few frames.
Using this card, the post buffer-filled frame rate was 1.6 fps.
So, the slower UHS-I card recorded a higher number of frames before filling the buffer than the faster UHS-II (not-supported) card.
These buffer capacities should be considered best-possible for the referenced cards and your in-the-field results will likely vary, but a fast memory card, especially a fast CF card, definitely makes a difference with this camera.
Following are links to MP3 files capturing the sounds of the 5D IV:
Canon EOS 5D Mark IV One Shot Mode
Canon EOS 5D Mark IV Burst Mode
Canon EOS 5D Mark IV Silent Mode
Canon EOS 5D Mark IV Silent Burst Mode
Burst Comparison: Canon EOS 5D Mark III compared to IV
Camera sounds are recorded using a Tascam DR-07mkII Portable Digital Audio Recorder with record levels set to 50% at -12db gain and positioned 1" behind the rear LCD.
The 5D III vs. 5D IV sound comparison illuminates the more-subdued sound of the 5D Mark IV.
The silent modes are once again available, but ... with the camera being quieter to begin with, the silent modes don't seem as dramatically quieter in this camera.
Live view shooting can be used to further minimalize the 5D Mark IV's audibility.
Learn much more about the Canon EOS 5D Mark IV here
You can find Canon 5D Mark IV in stock at these retailers
by Sean Setters
A few days ago we can across a new kit offered by Canon, the Portrait & Travel 2-Lens Kit
. The kit contains the Canon EF 50mm f/1.8 STM
and EF-S 10-18mm f/4.5-5.6 IS STM
I immediately asked myself whether or not this kit makes sense from a marketing perspective. I'm not entirely sure one way or another, but I'd like to share some thoughts. Usefulness and Versatility
There's no doubt that a wide aperture, 50mm prime lens is a versatile tool for photography. The general purpose focal length produces a pleasing angle of view which approximates our own eyesight and the wide f/1.8 aperture can allow for great background separation from in-focus subjects. As such, the EF 50mm f/1.8 STM (with an 80mm full-frame equivalent focal length) can work very well for portraits for those using an APS-C sensor camera (this kit's target market).
And with a full-frame equivalent focal range of 16-28.8mm, the EF-S 10-18mm f/4.5-5.6 IS STM makes a very good landscape lens capable of capturing sweeping views in front of the camera. This lens' image stabilization means that you can use significantly lower shutter speeds to obtain sharp images of non-moving subjects while keeping ISOs (and thus, noise) at a tolerable level.
Both lenses feature Canon's STM AF technology which allows for smooth AF transitions in video mode. Budding filmmakers will appreciate that.
I think it's pretty obvious that this may be an attractive kit from a capability standpoint. However, let's look a little deeper. Price
While Canon does indeed discount the Portrait & Travel 2-Lens kit compared to purchasing the lenses separately, it's the fact that you're bundling two lenses in the first place with a necessary increase in the investment required compared to a single lens purchase.
This kit's target market – largely first-time consumer DSLR owners – may find it difficult investing in two lenses at once. I remember the agony years ago of deciding on a lens to add to my Rebel XTi + general purpose zoom kit. It took everything I had to pull the trigger on an additional lens. Of course, that tension eases with multiple lens purchases and experiencing the value of having new capabilities at your fingertips. But for someone interested in purchasing their first non-kit lens, a 2-lens kit may well be out of consideration unless the discount is substantial. That said, instant rebates and other purchasing options (like refurbished) complicate the savings calculation.
First off, the Portrait & Travel 2-Lens Kit's MSRP is $429.00 but it currently qualifies for an $80.00 instant savings bringing its price down to $349.00.
Now let's look at some other options for purchasing the two lenses saparately. Below you'll find the regular MSRP and refurbished prices along with any current applicable discounts.
|Canon EF-S 10-18mm f/4.5-5.6 IS STM||$299.00||$279.00||$239.99||$215.99|
|Canon EF 50mm f/1.8 STM||$125.00 ||$125.00 ||$100.79||$89.79|
As you can see, timing (available sales/discounts) and your own preference for new or refurbished gear will determine the true savings realized by purchasing the 2-lens kit. What's very odd is that the 2-lens kit would actually be $5.00 more expensive than buying the lenses separately with no instant rebates taken into consideration.
So what are the downsides to purchasing refurbished items from Canon USA? First, your lenses won't come in retail boxes. Second, Canon USA will charge you sales tax up front (you are technically responsible for paying sales tax to the proper authorities for purchases made at online retailers when they do not automatically collect it). Otherwise, you can expect refurbished items to arrive in like-new condition with a retail-matching 1-year Canon USA warranty.
At the end of the day, I couldn't help but think that the Portrait & Travel 2-Lens Kit only really makes sense when it's discounted like it is now. With the kit's $80.00 instant rebate, it's $55.00 less than buying the same lenses separately even with their own instant rebates considered.
However, buying refurbished will oftentimes get you the best deal. B&H
has the Canon Portrait & Travel 2-Lens Kit
available for preorder. Canon USA carries the Refurb. EF 50mm f/1.8 STM
and Refurb. EF-S 10-18mm f/4.5-5.6 IS STM
Roger Cicala over at LensRentals has just posted a teardown of the Canon EOS 5D Mark IV
. For those interested in seeing the guts of the their new camera, this is the best way to find out without voiding your warranty. :-) LensRentals
has the 5D Mark IV
available for rent.
From the CompactFlash Association: September 07, 2016 – CUPERTINO, Calif.
– he CompactFlash Association (CFA) announces the CFexpress Family of high-performance removable storage based on PCIE and NVM Express.
CFA has developed high-performance removable cards standards for the last 21 years with the popular CompactFlash, CFast, and XQD formats. The CompactFlash Association was formed in 1995 as the initial digital film format and continues to serve professional imaging and industrial markets where high performance and high-quality recording media is essential for high-speed capture and high-speed transfer into the workflow.
CFexpress is the next evolution in an open standard format for a broader set of applications, such as professional imaging, personal computing, servers, IoT and industrial. CFexpress differs from prior CFA standards in that CFexpress is a specification spanning multiple form factors and performance levels to match various market requirements while maintaining the same electrical/physical interface and memory/storage protocol. The new CFexpress specification is under development within the CFA CFexpress Working Group.
CFA’s goals for the CFexpress family are:
- Unify the ecosystem around a removable storage specification that has longevity in the market
- Provide a platform that scales with performance increases in the PCIE interface
- Leverages the technologies and skillsets of the larger volume compute markets
- Seamless compatibility with the capture ecosystem and workflow tools.
CFexpress leverages the PCIE physical interface for higher performance based on the high-volume compute industry. PCIE CFA’s objective is to specify multiple removable storage devices that spans from two lanes architecture all the way up to eight lanes. With the current PCIE Gen 3 delivering maximum theoretical interface speeds of 1.0GB/sec per lane, CFexpress would enable theoretical sequential speed of up to 8GB/s.
CFexpress also utilizes the low latency NVM Express memory/storage protocol across all of the form factors. This enables compatibility with a broader set of ecosystem components, such as controllers, OS, capture devices and workflow modules. In imaging, compute and industrial applications, the use of PCIE /NVM Express enables access to wide range of open standard platforms consisting of mature and proven drivers. In addition, the new CFexpress format also enable easy compatibility with the Thunderbolt interface which is also based on PCIE. Actual CFexpress products will vary in performance based on market requirements and protocol overheads.
Professional video data rate requirements are growing at an exponential rate exceeding the capabilities of existing open standard formats. 4K RAW video at 30fps requires 400-500MB/sec of sustained performance not including any overhead to guarantee performance over the entire recording media. 4K RAW video at 120fps requires 1,600-2,000MB/sec. 4K RAW video at 240fps requires 3,200-4,000MB/sec. Even in High-Quality I-Frame compression formats, the data rates quickly exceed 1.0GB/Sec at high frame rates.
|PCIE Gen 3 Interface||Provides a max theoretical interface speed of 1.0GB/sec per lane of PCIE. This speed enhancement enables a new generation of higher performance cards to meet requirements for professional video recording.|
|Family of Form Factors||Provides multiple form factors to address multiple market segments with a unified physical interface and memory/storage protocol. 2 lane and 4 lane form factors will be the initial focus but anything from 1 lane to 8 lanes is possible. This provides a range of up to 8GB/Sec with PCIE Gen3.|
|NVM Express||A storage interface designed from the ground up for NVM storage. The NVM Express protocol features fixed length commands, an efficient queuing model, and very low non-cacheable PCIe accesses per command, delivering reduced I/O overhead and performance improvements in comparison to legacy storage device interfaces. NVM Express is gaining popularity across various flash-based storage solutions and has driver support on all leading OSs.|
Mr. Tom Ando of Canon and CFA Co-Chairman of the board said; “As the Co-Chairman of the CompactFlash Association I am pleased and excited to introduce CFexpress as CFA’s continues the tradition of performance leadership. The higher performance provided by CFexpress formats will further increase the capabilities and value for photographers, videographers, cinematographers, industrial, and compute applications. I am very pleased and proud to see the CFA creating standards that address new market requirements.”
Host and card manufacturers will be able to leverage the compute industry’s investment in PCIE and NVM Express. Media manufacturers will be able to leverage high volume solid state disk (SSD) controller technology to serve the high performance requirements of this market. The new format will have VPG (Video Performance Guarantee) capability with new VPG profiles at every increases performance levels. CFA’s goal for CFexpress is the development of a standard that can span many market segments and provide a stable and consistent format to fully leverage the industry’s R&D investments and less churn in the market of standardized and proprietary recording media formats.
Mr. Koichiro Kawamura of Nikon and CFA Co-Chairman of the board said; “As the Co-Chairman of the CompactFlash Association I am also pleased and excited to introduce CFexpress. The specification is a family of form factors that can serve many market segments with a unified physical interface and unified memory/storage protocol. We are excited with the vision that CFexpress will unify the imaging and industrial ecosystems around formats that are easily compatible with the computing markets. CFexpress represents a unique opportunity to unify the market around truly open standard formats.”
Do you need the benefits of the Canon EOS 5D Mark IV for a special project? If so, good news! LensRentals
has added the 5D Mark IV
to their rental fleet.