Nirv
Carbonite Member
Is it? Do they?
FS7: Zeiss Milvus
- Thread starter Liam Hall
- Start date
Is it? Do they?
Nirv
Carbonite Member
Well this takes us back to this forum being a nexus of people all using the same camera at different types and levels of the scale with very different backgrounds and work environments.
But it is and they do.
Yeah, you're right, some of us have yet to work for directors who think full frame makes interviews more cinematic, I hope one day to aspire to that level but until then I'll continue to use the term crop factor.
Liam Hall
Veteran
Yes it is. That's not to say, people who earn a living from their camera can't use it, I use some of the most muppet-laden jargon known to man all the time, but use that term on the type of set I was on today and the whole camera department would have laughed at you..
This way of looking at it might confuse some folks. Sticking with full frame FOV as to not confuse the issue, the Otus 55mm full frame lens using a Speedbooster would be 57.75 on the FS7 in full frame FOV terms. This assumes a 1.5x crop factor for the FS7. The way to do the math is at :https://www.slrlounge.com/near-full...-metabones-speedbooster-nikon-adapter-review/ .
A 28mm full frame using a Speedbooster on the FS7 would be 29.4mm full frame FOV equivalent.
Hope that helps someone,
Robert
Both are significant when explaining FOV with a Speedbooster using a full frame lens on an S35 sensor.
Robert
Liam Hall
Veteran
Not really, it just leads to confusion to anyone who hasn't studied optics. Just read this thread.
Liam Hall
Veteran
rogar-BigGrin(DBG)I rarely take mine off
Mine is glued to the FS7. But recently ive started to question it more and more, because of the heavy distinct CA signature it leaves on everything.
Its just that my 24-105 Art doesnt work very well without it. And that lens pays my mortage.
digitalinnovations
Well-known member
Does the Art 24-105 lose a half stop at full zoom like the Canon 24-105?
Lenilenapi
Carbonite Member
Do you get CA with the 24-105 and speedbooster? I sold my 24-105 Canon for that reason.
Yup!
But i also get it on other lenses, like Sigma 35 Art.
A majority of this film was shot on the FS7 slog3.cine and Sigma 24-105 Art. You can see some CA especially on high contrast edges.
No! Its even fairly parfocal. Breathes a little.
I sold my Canon because it did not match exposure at zooming. Got the same issue with my Canon 16-35 f/4 IS. Hate it.
digitalinnovations
Well-known member
Thank you, Martin. That's very good to know. I use the Canon 24-105 quite a bit for live / doc style shoots because of the versatility of the zoom range and that half-stop can make a world of difference sometimes.
Grug
Veteran
Robert, your math is sound. But frankly, your methodology is not helpful at all. And is only likely to confuse people further.
Certainly, for people coming to motion picture work from a 135 stills background, crop-factor is a useful tool for choosing a focal length equivalent in FoV to the choices you would have made with 135.
However, in the motion industry, where S35mm is a well established format and the dominant format, you're just going to confuse people. By all means use crop factor to help you choose the lens you want for a shot on S35mm. But when you talk of focal lengths, talk about actual focal lengths (or adjusted focal lengths after they've been speedboostered). A 50mm is a 50mm is a 50mm, and it's only the size of your sensor that can change the relevant FoV that your sensor will yield.