what do you think about the metabones speed booster+canon 24-105/4 on fs 100 ?
- Thread starter avnere
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morgan_moore
Major Contributor
I think if you can handle the short plasticy throw of the lens the range and resultant speed would be very very good.
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Erik Wittbusch
Well-known member
I'm thinking about the same combination. Not exactly cheap nor lightweight but the focal range is really perfect for my needs and the IS very welcome.
These days I put my old Tokina 28-70/2,8 on the speedbooster. A very nice combination too, but I really miss the IS for handheld work often.
There is also the new Sigma 24-105/4,0. It seems to be sharper and with better t-stop, which doesn't get darker at the long end.
Sadly it seems to produce more CA's throughout the range.
It seems that the Canon 24-105 is the only option in this range.
These days I put my old Tokina 28-70/2,8 on the speedbooster. A very nice combination too, but I really miss the IS for handheld work often.
There is also the new Sigma 24-105/4,0. It seems to be sharper and with better t-stop, which doesn't get darker at the long end.
Sadly it seems to produce more CA's throughout the range.
It seems that the Canon 24-105 is the only option in this range.
i have been interested in that lens also and speed booster only makes it a wee bit more functional.
i do wish the f4 was f2.8 at the 70mm length but sb should assist with that.
what would sb add to the 24mm short end?
would sb "widen" the fov to something lower than 20mm?
ymmv
be well.
rob
smalltalk productions/nyc
i do wish the f4 was f2.8 at the 70mm length but sb should assist with that.
what would sb add to the 24mm short end?
would sb "widen" the fov to something lower than 20mm?
ymmv
be well.
rob
smalltalk productions/nyc
morgan_moore
Major Contributor
If you want to shoot a wide, a mid and a CU without changing lenses (to me the golden ticket) the 24-105 and booster gives you this .. at 2.8
It is an awesome combination, really I cant see why there is any hesitation at all.
I own an F3 so the option is not there for me, when I was on a 5dmk2 I used it for 90% of my work
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It is an awesome combination, really I cant see why there is any hesitation at all.
I own an F3 so the option is not there for me, when I was on a 5dmk2 I used it for 90% of my work
S
Rob;
24 x 0.7 = 16.8, 105 x 0.7 = 73.5
so a 24-105 t4 becomes (roughly) a 17->75 t2.8 on the SB
Erwin Vanderhoydonks
Active member
Hi,
I don't think is calculation is correct.
A 24-105mm F4.0 on the NEX FS100, with the 'original' MetaBones adapter will give you a 38-168mm F4.0 lens.
But with the 'Speedbooster' it wil be a 24-105mm F3.5 lens.
The 'SpeedBooster' is designed to make your APS-C sensor a FullFrame sensor.
If you haven't seen my video with the 2 adapters, here it is.
https://vimeo.com/58343386
Erwin Vanderhoydonks
Active member
Yes it is 'sharper' and very usable.
See this one... https://vimeo.com/58343386
PS: and I've also tested the 24-105, but not in the video.
i've never shot vistavision or stills, so a 24-105 is a 24-105 on most any adptor, but put it on a speedbooster and multiply by 0.7 to get one to 17-75(ish)
to me a 24 is a 24 on a super35 sized gate, and i know excatly what i will see if i put a 24 on my camera be it a 435 or a Alexa or a FS100...
if i put it on a speedbooster i will see what i would expect to see from an 18
Never did get my head around the stills/vistavision wacky math thing... and really what ever a stills shooter see's is of somewhat less than zero concern of mine....
For anyone shooting S35 sized gate/sensor my math is correct
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Erwin Vanderhoydonks
Active member
Hi,
Let me try to explain this
The Sony NEX FS100 has indeed a S35 sensor. Which is almost the same as a APS-C (22.5 x 15 mm) sensor.
The Sony NEX 5 has a APS-C sensor.
Both of them don't have a FullFrame sensor (36 x 24 mm)
The Canon 24-105mm F4.0 lens is designed for a FullFrame sensor. If you put this lens on a APC-C sensor you will end up with a cropped view. Only part of the lens is used. Please read this : http://en.wikipedia.org/wiki/File:Full-frame_vs_APS-C.svg
If I put my Canon 15mm Fisheye F2.8 on the Sony NEX 5 with the 'Original' adapter (without the extra glass) I will get a 'bad' 28mm view.
But when I put this Canon 15mm Fisheye F2.8 on the NEX 5 with the speedbooster, I will get a Fisheye view. The same view as with my Canon 1Ds MII. The Fisheye is back a real Fisheye. And not a 7.5mm lens or something like that.
It's the other way around. Put a 50mm lens on the FS100, and you end up with a 85mm lens. Multiply by 1.6.
Please view this video (https://vimeo.com/58343386) and read the comment. And you can also download the stills made with the Sony NEX 5.
I'll hope this explains it a little bit more...
alaskacameradude
Veteran
Not this again!
Look, he is using a different frame of reference than you. He is saying if you put a 18mm lens on
a Super 35 cam, then take it off and put a 24mm with a speedbooster, they will look almost the same.
He is right. You are saying that if you put a 50mm on a Super 35 and a 85 on a full frame, they
will look almost the same. You are right as well.
The best comparison I can think of off the top of my head, is measuring temperature.
He says water freezes at 32 degrees. You say that is crazy, water freezes at 0 degrees.
Who is right? You both are! He is using a different scale (Fahrenheit) than you
are (Celcius). But both Fahrenheit and Celcius have a 0 degree measurement and a 32
degree measurement.....just not in the same place on each scale. He is taking your
Celcius measurements and converting them to Fahrenheit and you are taking his
Fahrenheit measurements and converting them to Celcius.
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morgan_moore
Major Contributor
No a 50 on S35 is a 50. It has the same(ish) field of view as an 85 on a fullframe sensor, which is a narrower FOV than a 50 on a fullframe sensor.
Bottom line.. 24-105 is probably more useful with a speed booster.
Erwin Vanderhoydonks
Active member
That explains a so good...but the numbers on the Canon 24-105mm F4.0 are for FullFrame sensors.
And saying that
is mixing up the numbers.
You will never get the 17mm view when you use the 24-105mm lens. Even not with the speedbooster. Without the Speedbooster you get the view of 38mm. With the SpeedBooster you get back the 24mm view.
And it is even more complex if you start using EF-S lenses. The number on these lenses are also for FullFrame, but you have to multiply by 1.6 to get the correct view compared to a FullFrame.
Erwin Vanderhoydonks
Active member
That's correct. A 50mm will still be a 50mm but the image on the sensor is different.
On a S35 (APS-C) sensor the image will be not the same. That's why I compare it with the same image as if it was shot with a 85mm lens.
50mm --> the same image as if you are using a 85mm lens on a FullFrame sensor.
If you want to use the numbers from the lens (compared to a FullFrame sensor), use the Speedbooster. Otherwise multiply with 1.6
morgan_moore
Major Contributor
You will get the FOV of a 17mm on an S35 chip. So you do get a '17mm FOV', just not the FOV you get on a 17mm on a FF chip (AKA 17mmFOVatFF35).
You are speaking like FF35 is the standard. It is not, imagers are from 10.8 inches down to very small. It is of course a good reference for those that come from stills, but not a standard.
Erwin Vanderhoydonks
Active member
For the lens we are talking about yes. It's a lens designed for FullFrame. Canon EF 24-105mm F4.0 is for a FullFrame sensor.
The image on a S35 sensor, like the Sony NEX FS100, will not be the same as if you take a photo with this lens on a FullFrame sensor.
This lens (Canon EF 24-105mm F4.0) set to 24mm on the S35 sensor or Sony NEX 5 (APS-C) sensor, without the SpeedBooster adapter, will get you the same image on the sensor as if you set the lens to 38mm on a FullFrame sensor DSLR.
But with the SpeedBooster (lens set to 24mm in both cases) you will get the same image on the sensor with the S35 sensor or Sony NEX 5 (APS-C) sensor as if it was taken with a FullFrame sensor.
morgan_moore
Major Contributor
A lens is a lens. Focal length is focal length. Yes this lens has an image circle designed to cover FF35, that does not affect its FOV - it just means it will not vignette unless you use it on a larger sensor than it was designed for.
Describe it how you want but IMO your description is confusing.
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Describe it how you want but IMO your description is confusing.
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Erwin Vanderhoydonks
Active member
Correct.
It will not affect the 'Field Of View'.
But it will affect the image projected on the sensor. That will not be the same.
ahh but i don't want to use the numbers from a format that has no relevance to me or anyone else shooting S35 gate/sensor camera's
so a lens is a really nothing more than a lens unless it is on a doubler or a speed booster
the maths for the speedbooster is multiply by (roughly) 0.7
My math is correct as i am ignoreing the "FF equlivancy" that means the square root of nothing to me, and has zero relevance to the FS100
It's fine that folks who came to this medium from stills seem to be needing some math, for me it's been pretty easy to know what FoV & stops/DoF i need for a S35/sensor - I started as an AC in 1973, been thinking in FoV as it relates s to a 35mm gate for a long time, i'm not the only one either ;-)
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