Excellent video, thank you for the information! Small indie film maker here, doing it all. Camera, lights, sound, production, writing, even a little acting. But it's a ton of fun and I've got some good people helping. Videos like these help me ensure that I'm as knowledgeable as can be concerning my craft.
I know this is geared towards mostly consumers/prosumers but what's really interesting is the crop factor on large format sensors like medium format and vista vision.
So I’m assuming these are all shot at the same distance from the subject? So if we want the same frame of a subject as a full frame sensor on a say micro four thirds do we just put the camera further away from the subject?
Hey, I was wondering the same. I did some research and as assumed it sadly doesn't work like that. Because the camera distance defines the distortion you have on a picture. (as seen in the YT-Video "Lens Compression Doesn't Exist - Here's Why" ) Furthermore moving away or towards the object you would have to change the focus. And as the depth of field increase/decrease with distance, a changed depth of field would also be the result of moving a camera. Hope that helps ^^
I am a beginner using a mirrorless camera(canon m50). I will be making indoor talking head videos with some demonstrations. I will do a minimal amount of vlogging. I only have mirrorless ef-m lenses so no adapters. Will the crop factor matter to me in any way or is it only a concern when using full frame lenses with an adapter.
Millimeters are millimeters. Whether you think using crop factors is up to you. It is like thinking in miles vs. kilometers (even the factor is the same)
That was a bit too in depth for me to go into here. Tony and Chelsea Northrup have a fantastic video which explains the depth of field differences if you have seen that? Carl
It's actually fairly simple Patrick. The closer you focus on a lens, the smaller the circle of confusion- or the amount that is in focus. As demonstrated in this video, larger sensors have wider frames with the same focal length. This means that to get the same frame as that on a smaller sensor, you are forced to frame up closer and therefore focus closer. So again, larger sensors force you to frame up and focus closer than a smaller sensor where you would have to frame up further away and focus further away as well. An easy exercise to demonstrate this is to press your crop in/focus check button on your camera, where it crops in on the frame to help you get focus. That is effectively seeing what a smaller sensor would see. Notice the depth of field doesn't change when you press that button, but if you were to try to get the same frame in that mode, you would have to stand much further back, which would greatly increase the amount in focus.
Along the lines of what Greg said, is the distance that changes everything. The depth of field is NOT affected. The field of view is, but that's about it.
Thanks Carl! I think I had posed a related question some months ago, so this extra info is very useful. Just to be clear: Is it correct then, that - on a m43 sensor - a FF 50mm lens using an adapter (NOT speedbooster) will give the same FOV as a native m43 50mm lens? Also, won't a speedbooster work correctly to reduce an APS-C lens down to an m43 sensor? Thanks again!
Yes that’s exactly right. Some speed boosters will work with some APS-C lenses, it depends on the lens and the speed booster. Check the Metabones website for compatibility Carl
Well put. Might be worth adding that the DoF of your 50mm lens remains unchanged, regardless of the fact that it may well appear to be a 100 mm on your MFT chipped camera. Similarly, you'll need a lens with a focal length of 12mm to equal the FoV of a 24mm on FF, and the DoF will consequently be much deeper for any given aperture. This means imperfections on filters will be much more visible.
Post production crop factor on prints Let's say you are shooting portraits with a 24Mp full frame DSLR camera in the 2X3 format and you want to print a 16X20 photo so you crop the photo to a 4X5 format this is equal to a crop factor of 1.203 So 1.203 X 1.203= 1.447209 24Mp / 1.447209 =16.58Mp So you end up with approximately 31% less detail. Example number two Let's say you are shooting portraits with a 24Mp full frame DSLR camera in the 16X9 format and you want to print a 16X24 photo so you crop the photo to a 4X6 format this is equal to a crop factor of 1.1884 So 1.1884 X 1.1884= 1.41229 24Mp / 1.41229 =16.99Mp This time you end up with approximately 30% less detail. So in conclusion even full frame cameras suffer from crop factor detail reduction just in a different way.
Excellent video, thank you for the information!
Small indie film maker here, doing it all. Camera, lights, sound, production, writing, even a little acting. But it's a ton of fun and I've got some good people helping. Videos like these help me ensure that I'm as knowledgeable as can be concerning my craft.
Great Video, well explained. Any chance you could add to it, with how the F-stop setting is effected in the same scenario? Cheers Colin.
I second this request
I know this is geared towards mostly consumers/prosumers but what's really interesting is the crop factor on large format sensors like medium format and vista vision.
But wait... so speedbooster let more light inside. That means that a blackmagic 4k with speedbooster does a better perfomance in lowlight than the 6k?
So I’m assuming these are all shot at the same distance from the subject? So if we want the same frame of a subject as a full frame sensor on a say micro four thirds do we just put the camera further away from the subject?
Hey, I was wondering the same. I did some research and as assumed it sadly doesn't work like that. Because the camera distance defines the distortion you have on a picture. (as seen in the YT-Video "Lens Compression Doesn't Exist - Here's Why" )
Furthermore moving away or towards the object you would have to change the focus. And as the depth of field increase/decrease with distance, a changed depth of field would also be the result of moving a camera.
Hope that helps ^^
I am a beginner using a mirrorless camera(canon m50). I will be making indoor talking head videos with some demonstrations. I will do a minimal amount of vlogging. I only have mirrorless ef-m lenses so no adapters. Will the crop factor matter to me in any way or is it only a concern when using full frame lenses with an adapter.
Millimeters are millimeters. Whether you think using crop factors is up to you. It is like thinking in miles vs. kilometers (even the factor is the same)
how about depth of field factor in diffrent size of sensor?
I have the same question.
That was a bit too in depth for me to go into here. Tony and Chelsea Northrup have a fantastic video which explains the depth of field differences if you have seen that?
Carl
It's actually fairly simple Patrick. The closer you focus on a lens, the smaller the circle of confusion- or the amount that is in focus. As demonstrated in this video, larger sensors have wider frames with the same focal length. This means that to get the same frame as that on a smaller sensor, you are forced to frame up closer and therefore focus closer. So again, larger sensors force you to frame up and focus closer than a smaller sensor where you would have to frame up further away and focus further away as well. An easy exercise to demonstrate this is to press your crop in/focus check button on your camera, where it crops in on the frame to help you get focus. That is effectively seeing what a smaller sensor would see. Notice the depth of field doesn't change when you press that button, but if you were to try to get the same frame in that mode, you would have to stand much further back, which would greatly increase the amount in focus.
Along the lines of what Greg said, is the distance that changes everything. The depth of field is NOT affected. The field of view is, but that's about it.
That’s a great explanation
Carl
Does adding the adapter increase the image quality, in the same way, using a full frame sensor would do on its own?
adapter worsens the quality
Great video. Was wondering is there a speed booster for canon APSC to fit full frame canon lenses?
That wouldn’t be possible because of the flange distance. Explaining that might be a future video...
Carl
Thanks Carl! I think I had posed a related question some months ago, so this extra info is very useful. Just to be clear: Is it correct then, that - on a m43 sensor - a FF 50mm lens using an adapter (NOT speedbooster) will give the same FOV as a native m43 50mm lens? Also, won't a speedbooster work correctly to reduce an APS-C lens down to an m43 sensor? Thanks again!
Yes that’s exactly right.
Some speed boosters will work with some APS-C lenses, it depends on the lens and the speed booster. Check the Metabones website for compatibility
Carl
Yes, how ever speed booster reduce full frame lenses to APS-C or Micro-4/3. APS-C lenses have too small image circles for them.
Well put. Might be worth adding that the DoF of your 50mm lens remains unchanged, regardless of the fact that it may well appear to be a 100 mm on your MFT chipped camera. Similarly, you'll need a lens with a focal length of 12mm to equal the FoV of a 24mm on FF, and the DoF will consequently be much deeper for any given aperture. This means imperfections on filters will be much more visible.
Very true.
Carl
THANK YOU
Well explained
Great info but I’ll never understand why people do an angled shot on a solo piece to camera. I always wanna shout “Hey! I’m over here!”
Post production crop factor on prints
Let's say you are shooting portraits with a 24Mp full frame DSLR camera in the 2X3 format and you want to print a 16X20 photo so you crop the photo to a 4X5 format this is equal to a crop factor of 1.203 So 1.203 X 1.203= 1.447209
24Mp / 1.447209 =16.58Mp
So you end up with approximately 31% less detail.
Example number two
Let's say you are shooting portraits with a 24Mp full frame DSLR camera in the 16X9 format and you want to print a 16X24 photo so you crop the photo to a 4X6 format this is equal to a crop factor of 1.1884 So 1.1884 X 1.1884= 1.41229
24Mp / 1.41229 =16.99Mp
This time you end up with approximately 30% less detail.
So in conclusion even full frame cameras suffer from crop factor detail reduction just in a different way.
So helpful! Thanks
No problem, thanks for watching!
Carl
Very nice. Thank you.
Glad it helped!
Carl
So! XD