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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 :)

Widest Wide-Angle Lens for SCARLET at 2K

Brian Iannone

Brian Iannone

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Based on the estimates of some of the users here, shooting with SCARLET at 2K is going to cause a crop factor of x3.9. I'm going to find myself shooting at 2K a lot because HDRx works at 30 fps only at 2K. So, using a typical wide-angle lens, which I would consider to be 18mm, really, would become a 70mm lens. Is there an ultra wide-angle Canon mount lens anyone would recommend? I'm speaking ultra ultra wide-angle here...
 
Ang. 5.9 is pretty darn wide. get one and a PL adapter for under a grand.

Nick
 
Brian Iannone said:
Based on the estimates of some of the users here, shooting with SCARLET at 2K is going to cause a crop factor of x3.9. I'm going to find myself shooting at 2K a lot because HDRx works at 30 fps only at 2K. So, using a typical wide-angle lens, which I would consider to be 18mm, really, would become a 70mm lens. Is there an ultra wide-angle Canon mount lens anyone would recommend? I'm speaking ultra ultra wide-angle here...
Click to expand...

Well, in 2k mode you can use lots of really nice S16 zooms and primes. Like this Canon 7-63:

http://www.visualproducts.com/storeProductDetail02.asp?productID=1085&Cat=3&Cat2=49

Although none are Canon EF mount. I don't think there is any rectinlinear wides under 10mm for EF mount. Some of the Sigmas are real wide, but are fisheyes.
 
sigma 4.5mm fisheye ! :biggrin5:
 
I'm pretty sure you don't want a fisheye. I'm not really clear why you want to shoot everything with HDRx, but that's a choice :)

Anyways, since you're only shooting 2K, stop looking at canon EF and instead look at canon EF-S lenses. Everyone loves the Tokina 11-16 (it's rectilinear, sharp, f/2.8 -- YAY,
and should work shooting in 4K if you change your mind). Sigma makes an 8-16 lens (although it's f/4.5->5.6, and will not take filters).
 
Brian Iannone said:
Based on the estimates of some of the users here, shooting with SCARLET at 2K is going to cause a crop factor of x3.9. I'm going to find myself shooting at 2K a lot because HDRx works at 30 fps only at 2K. So, using a typical wide-angle lens, which I would consider to be 18mm, really, would become a 70mm lens. Is there an ultra wide-angle Canon mount lens anyone would recommend? I'm speaking ultra ultra wide-angle here...
Click to expand...

crop factor is 3.9X only if you're comparing all the way back to FF35. Most cinematographers DO NOT DO THIS. It's something that DSLR shooters do for some odd reason, even though 90% of all DSLRs are APS-C (Super35) size, but I digress.

Same sensor, so therefore the same pixel size, on Scarlet as on RED One and EPIC. 2K on these cameras gives you an 11.06mm wide recording area. It is a 50% crop from 4K (obviously), and roughly 50% cropped from most APS-C/S35 imagers which are 22~24mm in width.

Only reason for you to relate to FF35 is if you regularly shoot FF35 and are intimately familiar with which AOV's you get at which focal lengths on the 36mm wide imager. Generally speaking, if you're shooting with a 50mm focal length for a certain framing at 4K, and you want to keep the same relative framing when you jump to 2K mode, you will change to a 25mm focal length.

Some good suggestions in this thread already. The Sigma 8-16 is a fun lens for shooting S35 at times. It's rectilinear, but does suffer from noticeable distortion still, but that's a really short focal length for that size of sensor. Even the $40K ARRI/Zeiss UltraPrime 8R (8mm rectilinear) has noticeable distortion. Another good one is the Tokina 11-16 -- this lens is a rockstar. Same with some of the other suggestions like the Angie 5.9 and Canon S16 zooms. Some of the S16 glass can get really expensive though.

I bet you won't be shooting HDRx as much as you think. The camera already pulls off 13+ stops of usable DR. I find that I rarely use it, even shooting outdoors most of the time. The ability to shoot 3K and 4K typically will outweigh the benefit of HDRx at lower resolution. Additionally, Scarlet shoots 3K HDRx @ 24fps (25fps too for you PAL guys). I would choose that any day over 2K @ 30fps HDRx...
 
OK, looking around a bit I found readily available C-mount to EOS adapters so I plan to get the Canon mount and use my vintage 16mm c-mount glass for 2k.
I also have a decent set of Minolta MD Rokkors that can be used with an EOS adapter too. So I am covered for now for all formats. 5.5mm wide to 120mm long in C-mount lenses.

I would highly recommend C-mount 16mm lenses or 2/3" and 1" format video lenses for 2k for both speed and resolution. 1" lenses might cover 3k. They will be sharper than most moderate cost 35mm still lenses.

Even better would be modern S16mm PL lenses.
 
David Rasberry said:
OK, looking around a bit I found readily available C-mount to EOS adapters so I plan to get the Canon mount and use my vintage 16mm c-mount glass for 2k.
I also have a decent set of Minolta MD Rokkors that can be used with an EOS adapter too. So I am covered for now for all formats. 5.5mm wide to 120mm long in C-mount lenses.

I would highly recommend C-mount 16mm lenses or 2/3" and 1" format video lenses for 2k for both speed and resolution. 1" lenses might cover 3k. They will be sharper than most moderate cost 35mm still lenses.

Even better would be modern S16mm PL lenses.
Click to expand...

EOS to C-mount? With proper FFD? That seems unlikely. Your lens will have to be deep inside the mount... I think you may be better off with 16mm lenses in PL or older mounts with relatively long FFDs.
 
Jeff Kilgroe said:
crop factor is 3.9X only if you're comparing all the way back to FF35. Most cinematographers DO NOT DO THIS. It's something that DSLR shooters do for some odd reason, even though 90% of all DSLRs are APS-C (Super35) size, but I digress.

Same sensor, so therefore the same pixel size, on Scarlet as on RED One and EPIC. 2K on these cameras gives you an 11.06mm wide recording area. It is a 50% crop from 4K (obviously), and roughly 50% cropped from most APS-C/S35 imagers which are 22~24mm in width.

Only reason for you to relate to FF35 is if you regularly shoot FF35 and are intimately familiar with which AOV's you get at which focal lengths on the 36mm wide imager. Generally speaking, if you're shooting with a 50mm focal length for a certain framing at 4K, and you want to keep the same relative framing when you jump to 2K mode, you will change to a 25mm focal length.

Some good suggestions in this thread already. The Sigma 8-16 is a fun lens for shooting S35 at times. It's rectilinear, but does suffer from noticeable distortion still, but that's a really short focal length for that size of sensor. Even the $40K ARRI/Zeiss UltraPrime 8R (8mm rectilinear) has noticeable distortion. Another good one is the Tokina 11-16 -- this lens is a rockstar. Same with some of the other suggestions like the Angie 5.9 and Canon S16 zooms. Some of the S16 glass can get really expensive though.

I bet you won't be shooting HDRx as much as you think. The camera already pulls off 13+ stops of usable DR. I find that I rarely use it, even shooting outdoors most of the time. The ability to shoot 3K and 4K typically will outweigh the benefit of HDRx at lower resolution. Additionally, Scarlet shoots 3K HDRx @ 24fps (25fps too for you PAL guys). I would choose that any day over 2K @ 30fps HDRx...
Click to expand...

Thank you for your reply! Very enlightening. =)
 
Uh, well, there's the Canon EF-S 10-22mm f/3.5-4.5 USM SLR Lens for EOS.

Geophysics? Uh, I like pastries.
 
Cenydd Ros said:
Uh, well, there's the Canon EF-S 10-22mm f/3.5-4.5 USM SLR Lens for EOS.

Geophysics? Uh, I like pastries.
Click to expand...

I was considering this one too.
 
i keep forgetting about lenses that are designed for APS-C, 16mm, micro 4/3rds, 2/3", 1/3", etc etc... for the windowed modes these are perfect. you can always rent these for certain projects, along with proper mounting options.
 
After reading Jeff's post, I'm reconsidering shooting in 2K at 30 fps with HDRx. I suppose I'll understand all of this better once I actually receive my SCARLET, but if I had to choose an ultra wide-angle lens to try, I think it would be Sigma's 8-16mm.
 
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