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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

RED Monstro 8K VV & ARRI Alexa LF 4.5K Camera Test 2019

Phil Holland

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Long story shortened; lots and lots of people have been asking me about these two cameras and know I've gone through a couple rounds of testing out all the current larger than Super 35mm Digital Cinema Cameras. VV, LF, FF, and erm.. VF Venice-a-full? You get the point. Now with Mini LF hitting the scene I imagine the conversation will be a bit more vibrant even.

I had the opportunity to do a couple things here. Test out Ranger, compare it to my Monstro DSCM2 cameras, but also test it against a brand spanking new ARRI Alexa LF. Short summary on Ranger versus DSMC2 Monstro; they are the same in terms of image quality.

To that point, this is a series of real world and technical tests showing some of the differences between RED's VistaVision 8K and ARRI's Large Format. I'm also dropping in a few tips with working with both as I have a feeling these are new to some people, though Monstro has been out for a year. This is meant to be watched a few times and ideally you can download the ProRes 422 HQ version, because YouTube re-encodes, which is sort of likely cooking pancakes twice. Still a pancake, just not as good and certainly not as tasty.

https://www.youtube.com/watch?v=XZPa3yp7lsQ

ProRes 422 LT Download Link (DCI 4K, 30GB)



I purposefully am not talking much about what's better or worse, I'm not going to tell anybody what they should use and you can make nice images with both systems. This is a test mainly to highlight the differences and let them decide for themselves really. But there are few notes I think are relevant and even a few things I didn't put in this piece.

Observations and Notes

- Testing Notes - This should be obvious, but all lighting and lens apertures as well as camera settings were constant and controlled. Meaning I literally physically locked the iris of the lens via tape or clamp. Cameras were set to 23.976, 180 degree shutter. The recommended Base ISO of both systems from both manufacturers is ISO 800 and you will see the most of that material, however, I did do some funky stuff by going to ISO 3200 (the absolute highest you would ever want to bring an ALEV III sensor) as well as ISO 200 (slightly below the RED recommended range). From my years of experience and how I and others have used the cameras, most are filming between ISO 400 and 800, though I see some people working at ISO 200-ish and up to 1600 for general shooting occasionally. This greatly informed the range I'd explore for this test. You can dig up my other tests for beyond ISO 3200 stuff, but since ARRI doesn't go there, I didn't go there, erm... I didn't include it at least :)

- Camera Size, Weight, and Power - Notable. The full size LF comes in at 17lbs, the Mini LF at 5.7lbs without anything but the LPL mount on there. DSMC2 Monstro comes in at < 3.5lbs with PL Mount and with the Production Module that gets you up to 5.5lbs with full I/O and Phantom Power XLR. For the Rental RED Ranger it's a smidge heavier with similar I/O at 7.5lbs. The smallest you can get a DSMC2 body at the moment is < 4lbs with just a battery plate, which I occasionally do outdoors. The Alexa LF and Ranger do indeed need 24 volt power, which adds some weight and chaos into the mix. I actually lugged a Anton Bauer VCLX Battery everywhere when using those two. Physical dimensions I'll let you lookup if needed, but the short tale is LF is larger. RED Monstro operations around 60Wh. The full size ARRI LF runs around 137Wh, though it gets up to 150Wh pretty quickly. The Mini LF runs a bit more nimble at 65Wh.

- Data Rates - We all know the differences between REDCODE RAW and ARRIRAW at this point. It's a Compress RAW Codec versus a virtually uncompressed one. How this manifests in practical terms is really depending on a few factors, but check this example out. For about the same 1TB of space approximately you get in 53.5 minutes of UHD 4K ARRIRAW, in that same space for 8K HD REDCODE 5:1 you get 78 minutes of recording. And I didn't get into the fun of comparing various flavors of REDCODE RAW to ARRIRAW as this test was about the highest quality possible, but I'd say you can certainly give 5:1-12:1 a stab to see where you find your happy place.

- User Experience - People fall on either side of the fence with all of this, so no personal POV from me. However, I HIGHLY feel Arri needs to work on adding more In Camera Focus tools. Though they have Magnify while Rolling, their general Focus Assist tools are far less and less tuned for the higher resolution 4.5K LF Sensors. All the cameras performed for me and had zero issues during operation, which is good. A lot of the early LF issues have been due to power or heat, which is slowl y getting tackled with user knowledge, more power options, and firmware updates.

- What's up with your Magnifications of 200%, 1:1, and 182.4% - Though I am often finishing in 8K with Monstro, I geared this test towards 4K theatrical production scaling down/down sampling the 8K and 4.5 footage down to a DCI 4K 4096x2160 finish. For RED Monstro 8K VV that means a scaling factor of 50%. For ARRI Alev III LF 4.5K that's about a 92.1% scale, 200% of that gets you the 182.4%. As this is a test and people occasionally punch in on stuff, I'm basically showing what you can get away with and where things fall apart.

- Resolution Stuff - RED obviously has more pixel resolution than ARRI here and I didn't even scratch the surface of what's possible in the RED world in terms of finishing material. There are many scaling options and even slapping a smidge of sharpening on there can help carve out a unique look if you are looking for a more toothy vibe. As myself and Cioni have mentioned a few times, more resolution actually leads to smoother images. This is actually what you can see when comparing those magnifications and down sampled finished images. It's interesting because through post efforts you can indeed match them at 1:1 resolution, damn near it. It's also interesting that at 5K you have more resolution that's a bit more relevant to film's Super 35mm resolution in an equivalent format and out resolving the LF.

! Important Thing about Resolution and Image Quality - I feel I need to bold, italic, and underline this everytime I do a test. It's not all about resolution, but the combined image characteristics that are derived from Sensor Performance through the Color Science. However, as it pertains to Bayer Pattern Sensors, more resolution = more color and tonal information. This equates to more captured and usable information, smoother draw, etc. At this point this shouldn't be part of the conversation even now that Arri with 4.5K, Canon with 5.9K, and Sony with 6K large format cameras out there, but RED has received a lot of hell for 5K-8K resolutions and it's simply silly.

- Color Matching - You will see at various points in the test I Color Matched Monstro to LF mostly to show that variance there and that you could bring them together, which is relevant as even shows that primarily capture on ARRI often dips their toes into the RED world for VFX or other types of shots. You'll see I took the grade mostly there. What I didn't do is add the green tint to shadows that the LF demonstrates, sort of a well known character of the ALEV III sensor. If you pause the test around the Skin Tones area give it a pause and check the 2nd girl from the left's hair. So I would say my match is more of the tasteful variety as I would personally grade out some of that green.

- Total Captured and Usable Dynamic Range - When you look at the Magnifications of the Color Chart and the Xyla you can make a few observations about where you would and wouldn't like to work with either system. Color Stability at higher is always a thing and you see Monstro dip a bit there and Alexa LF certainly let's it's shadow tint known quickly. Interestingly enough even the standard Rec.709 curve for LogC is a bit aggressive in the shadows IMO to combat some of that. Monstro certainly sees more into the dark, with all 3 OLPFs. This is somewhere between 3-4 stops of additionally Captured and Usable Dynamic Range. This is rather relevant in these times as HDR finishing benefits a great deal by more shadow detail. ARRI's Highlight Roll-Off is rather pleasing, I'd say if you are aiming for that (and I've been saying this for years now) use the Skin Tone - Highlight OLPF and if you really like that subtle diffusion up there, KipperTie might be worth investigating. If you look closely at the Dark Warehouse Scene, when I put both in Log3G10 and LogC and then push the image up to ISO 3200 (don't do this, it's a test) you can more clearly see the sensitivity and noise differences. I shot that on the Ranger and I should have likely tossed a fresh Sensor Cal on there as some FPN shows up and this is flat/pushed to the extreme, but you'll notice on my charts at ISO 3200 that is not visible. Those were shot on my Monstros and not the earlly Ranger.
 
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- Optical Stuff - I made a couple note cards on that in the test. ALEV III hasn't changed much and it's still super prone to IR Contamination, it's super important to get filters that play well with Arri or you will be in grading hell on exteriors and shadows through midtones. RED's cameras lately are less of an issue from about Dragon on. But I do suggest getting modern NDs that feature nano-coatings rather than old school often not color accurate dyed filters. Deep Aperture Grid Patterns can occur with both RED and ARRI cameras. With RED we see this manifest as magenta orbs, with ARRI it typically occurs as small round dots that are a bit more spread out. Either way, ND accordingly, or for the RED ecosystem tap into that Skin Tone - Highlight OLPF. Same could be said about holding onto highlights a bit more. If this wasn't a test where I needed to keep light levels, lens, and exposures constant and controlled, I'd likely tackle something like the Warehouse Scene slightly different with the Standard OLPF, but the easier answer would have been to shoot that scene with the Skin Tone - Highlight OLPF.

- One raging critique towards Codex - ARRI doesn't make their media, Codex does. Dear Codex, Please get your $5,000 SXR Docks/Ecosystem working with Windows. It's 2019. Other than that, love you guys. I'm not saying that the RED Mini-Mag Reader is sub-$200 and works with everything, but I sort of am saying that. P.S. For the tech savvy, you can get this to work, but come on.


Anyways, hope this test is interesting and informative. I've been wanting to do something like this for a while. It almost transformed into all current large format digital cinema cameras, but at that point I would have needed hardcore sponsorship as this got rather expensive in time, gear, labor, talent, and even licensing music pretty quickly.
 
Link

Link

Hi
Thanks for all the effort for the test.
The link on youtube dosn’t seem to work or did I catch u too early.
Harcharan
 
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Hi
Thanks for all the effort for the test.
The link on youtube dosn’t seem to work or did I catch u too early.
Harcharan

Click the link above, it works here and all over. Might be an India thing however.
 
Hi
Its working now...
Harcharan
 
Great to see. Low light the monstro hands down. I was thinking the two cameras seemed VERY similar UNTIL the yellow flowers. Then Alexa moved ahead. Then the four girls in the workshop put the Alexa ahead again. There was just something more appealing about the Alexa in those two examples. Saying that the monstro overall is very good as it covers low light and gets somewhat close to the high bar set by Alexa in the important skin tones department.

No camera is perfect I guess.
 
Thanks for the test Phil. It highlights the characteristics of each system. I think the competition of DR is irrelevant now days. Now it is only about color, and which one each project needs. The skin tones of the LF are amazing. Thank you again.
 
Yea, Arri has been doing amazing work and continues to do so with their sensor tech. To think that their 10-year old sensor still surpasses most cameras. RED continues to push resolution at the forefront of their game. I just wish they'd focus more on overall image aesthetic, color, etc as opposed to pushing the K's, because as this test proves, 4.5K is more than enough.

IMO, I still think the dragon sensors is one of the best sensors RED has made, although, Monstro looks mighty fine as well.
 
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Yea, Arri has been doing amazing work and continues to do so with their sensor tech. To think that their 10-year old sensor still surpasses most cameras. RED continues to push resolution at the forefront of their game. I just wish they'd focus more on overall image aesthetic, color, etc as opposed to pushing the K's, because as this test proves, 4.5K is more than enough.

IMO, I still think the dragon sensors is one of the best sensors RED has made, although, Monstro looks mighty fine as well.

I certainly hope you download that ProRes file. 4.5K is likely going to be enough for some, but the resolution-haters from "camp harshness" would say more resolution in this case improves things.

But I'll save my comments for off the air on that.

I need to look at something regarding the color match stuff as on sRGB displays I'm seeing more saturation than I should be, but I'm in Vegas now for NAB. Might tackle that in a bit and see if there was some Rec.709 to sRGB chaos going on somewhere.
 
all the other metrics seemed pretty similar but Arri has better and more realistic/pleasing skin tones hands down. I'm sure red could improve in this area. they have improved a lot
 
Yea, Arri has been doing amazing work and continues to do so with their sensor tech. To think that their 10-year old sensor still surpasses most cameras. RED continues to push resolution at the forefront of their game. I just wish they'd focus more on overall image aesthetic, color, etc as opposed to pushing the K's, because as this test proves, 4.5K is more than enough.

Thx Chris. Always listening. Resolution obviously is important to us, but if you look at the work we have done most recently it hasn’t been all that we are pushing forward. Gemini, low light , IPP2 and the workflow acceleration with Nvidia are examples of us taking a moment to improve all the other pieces.

And yes... good enough is , well, good enough. But that is never where we have lived. Remember it wasn’t too long ago when 4.5k wasn’t “ just good enough “ , it was overkill and it was unnecessary. You read the exact same things about 8k now , word for word, that people said about 4k not more than a couple years ago. And that’s ok.

At the end of the day no matter what we say or the other guys say in the end it is the viewer who gets the final vote.
 
Man that Monstro really works in the shadows. I will say there were some things about the LF on certain shots that spoke to me, though I'm having trouble putting my finger on it. There were some that also obviously went to Monstro...detail preservation to be specific. Will have to download the ProRes and spend some time looking through more closely. Thanks for putting in the (likely enormous amount of) time.
 
Yea, Arri has been doing amazing work and continues to do so with their sensor tech. To think that their 10-year old sensor still surpasses most cameras. RED continues to push resolution at the forefront of their game. I just wish they'd focus more on overall image aesthetic, color, etc as opposed to pushing the K's, because as this test proves, 4.5K is more than enough.

IMO, I still think the dragon sensors is one of the best sensors RED has made, although, Monstro looks mighty fine as well.

As time goes on, I appreciate ALEVIIIs achievements/capabilities more and more. Exemplified best by Alexa Classics; only 2k and still selling for ~$7k+ almost ten years later, whereas R1s don't move for $1k (side note: cash are the "Ks" that actually matter, am I right?)

Furthermore, though I could be wrong, it seems to me that RED didn't expect Gemini to be as popular as it has become (matter of fact, originally they weren't even going to release it). With that in mind, I think customers are speaking loud and clear with their dollars/purchase decisions (re: DR/Colour/LL/Cost>resolution) and it'll be interesting to see how (or if) that changes RED's roadmap moving forward in the 2D space.

A VV/8k "Gemini" seems like a no brainer. Full sensor downscale for HFR seems like a no brainer. Internal NDs, no brainer. Half-baked raw codec would be nice (re: prores raw, or BRAW, which would be free). Low light/dual ISO, no brainer. 8k LF with ~5k s35 is, in my opinion, a sweet spot that should be in all but the entry-level DSMC3s (which'll be s35 8k)... All great options to look at.

As for the OP: Hey Phil, any chance for an HEVC encode of the video?... 60gb prores is kinda, well, 60gb!
 
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Exemplified best by Alexa Classics; only 2k and still selling for ~$7k+ almost ten years later, whereas R1s don't move for $1k (side note: cash are the "Ks" that actually matter, am I right?)

Yup, sounds about right. The Alexa Classic was 5x the price of the R1 at launch. And truth be told.. if you put either one of those cameras in a capable DP's hands they both could still take some incredible images.
 
Yup, sounds about right. The Alexa Classic was 5x the price of the R1 at launch. And truth be told.. if you put either one of those cameras in a capable DP's hands they both could still take some incredible images.

truth!!! all camera are just tools. The guy behind the camera can make or break an image.

I’ll be the first to admit that red camera aren’t perfect. Red is young and learning and arri been making camera for much much longer (however arri also has a lot of issues to work out).

End of day, i don’t consider myself a great cinematographer. I try to hardest and maybe if i was better i would prefer arri like a lot of the great cinematographer do, but i personally have been able to get the same image out of both camera system since my Epic-M #642 (I also never knew film and have always been a digital guy). I prefer to shoot on red because they believe in what i believe; being comfortable with being uncomfortable. Arri settled on the same sensor for over ten years and has said it good enough. Red like me doesn’t settle, they try harder.

I hope Red doesn't settle before I do, because am not planning on it until am in my late 70's, if they keep going maybe I'll settle for an Arri ;-)
 
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Yup, sounds about right. The Alexa Classic was 5x the price of the R1 at launch. And truth be told.. if you put either one of those cameras in a capable DP's hands they both could still take some incredible images.

Touché. Granted, I was referring to the resolution game -- a 2k camera substantially outselling a 4k camera 10 years later when 4k is actually viewable, is very telling. Hence why I mentioned the (potentially unexpected) positive response to Gemini, even though it can "only" deliver 4k and there are 8k options available (used/old stock of Epic-Ws and Weapon Helium being cheaper).

Also, all Arri's cameras, from 2k Classics to 6.5k A65, look/react/expose/function the exact same, so they retain value. IPP2 is a step in that direction from a post perspective (and I *love* it for that), but each RED sensor exposes differently, captures different DR/Colour/artifacts/noise floors, and has different nuances that need to be learned to extract the most out of each. Production doesn't want to deal with that, though owner-ops don't mind because we own the tool and can test/finesse as much as we want.

(Side note: To be fair, Alexa was also working/actively renting for 5x as long as the R1. It seems REDs are harder to get it out the door on a rental basis unless you're at the tip-of-the-spear sensor-wise/body-wise, which ends up being more costly over the same timeframe since there's a new sensor or body every 18mths).
 
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Thx Chris. Always listening. Resolution obviously is important to us, but if you look at the work we have done most recently it hasn’t been all that we are pushing forward. Gemini, low light , IPP2 and the workflow acceleration with Nvidia are examples of us taking a moment to improve all the other pieces.

And yes... good enough is , well, good enough. But that is never where we have lived. Remember it wasn’t too long ago when 4.5k wasn’t “ just good enough “ , it was overkill and it was unnecessary. You read the exact same things about 8k now , word for word, that people said about 4k not more than a couple years ago. And that’s ok.

At the end of the day no matter what we say or the other guys say in the end it is the viewer who gets the final vote.

Yup. Well said Sir! RED has always been an innovator while at the same time being a leader. While most movies are still being screened in 2k, it’s hard for productions, especially those with lower budgets, to shoot above 2k, let alone 4K. Even on some of those higher end jobs, they still shoot at the resolution master, and things still look great. While 4K and above acquisition becomes more and more relevant as time progresses, it will be interesting to see when the resolution is enough. Most people don’t look great in 8K, let alone 4K. Most people are having to shoot with filters, and do a lot of work in post just to make the talent look like, well...movie stars.

I think that companies like Blackmagic and Kinefinity continue to push the big boys / RED and Arri, to make more cost effective cameras, which I think is great, because, who doesn’t want to pay less for a great camera. I think there will come a time where these lower budget cameras get requested more than the big boys, just from a standpoint of cost. As a producer, it’s a lot more cost effective to hire a DP with a Blackmagic than it is with an Alexa. Obviously, it’s a different camera with a different look, but with today’s sophisticated grading techniques and post processes, you can get cameras darn close, and then these cheaper cameras are more than good enough. Productions want to cut wherever they can, and typically that’s with camera first...because it’s a ripple effect. The bigger the camera, the bugger the crew, hard drives, etc. BM and Kinefinity are trying to saturate the market with their camera systems, and BM is especially doing a great job at that. Most filmmakers have a 4K Camera now, so what sets the big boys apart, and is they enough to justify the cost difference on all fronts?
 
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