Because most others use bigger sensors. f/2 zooms would be too big to be very convenient. Also, with such a small sensor, they kinda need it to get some DoP. f/2.8 would give the same DoP effect as f/5.6 on fullframe or f/4 on APS-C :P
But still, f/2 does give more light of course, so that's good :) Not disrespecting Olympus here, good equipment! No doubt.
@DVL1507 What are you talking about. Other manufacturerers do not no have f/2 zooms for two reasons. The lenses would be huge, and since Olympus uses a small sensor, the lenses can be small, even with such a big aperture as f/2. And, since they do use such a small sensor, they need a bigger aperture to get the same amount of depth of field(DoF).To get the same DoF as f/2.8 on a full frame sensor, you need f/1.4 on an Olympus sized sensor, and f/2 on APS-C.
@DVL1507 Also, not the focal length never changes. If I had a 50mm lens that fit all cameras, it would be 50mm on any sensor size. So, the focal length NEVER changes when you change sensor sizes. The field of view (FoV) for that focal length do change however. 50mm is 50mm regardless, but the FoV changes.
So let's say 10mm on Olympus equals the same FoV as ca. 15mm on APS-C; and 20mm on full frame. But 10mm on APS-C gives the same FoV as ca. 15mm on full frame, and 6.67mm on Olympus.
@DVL1507 Final reply: Yes, aperture doesn't change, f/2 gives the same light regardless of sensor size, but two other things change when you move a lens to different sensors:
- 1: Depth of Field changes
- 2: Field of View changes
I'm not sure which statement you mean I made that I'm not sure about.
For Olympus to be competitive in both DoF and FoV, they need big apertures. But they still get more noise compared to bigger sensors, and less DoF at the same apertures as lenses on bigger sensors.
@DVL1507 When you reply like you did to my first comment, and you say the focal length changes, there is no way for me to know what you know about this subject, so I have to spell it out for you. Also, why are you getting personal? This is the last reply from me.
Prices for high end glass with large aperture,ie:f2,are always going to be more expensive,but Im certain you knew that,didn't you? You get what you pay for,a serious photogragher,with a serious lens and camera in hand,can indeed compose a great work of art.
Dude who else has f2 zooms, no one does!
KaiserSozeSPF 3 years ago
Because most others use bigger sensors. f/2 zooms would be too big to be very convenient. Also, with such a small sensor, they kinda need it to get some DoP. f/2.8 would give the same DoP effect as f/5.6 on fullframe or f/4 on APS-C :P
But still, f/2 does give more light of course, so that's good :) Not disrespecting Olympus here, good equipment! No doubt.
SpeedFreakNO 2 years ago
Comment removed
DVL1507 11 months ago
@DVL1507 What are you talking about. Other manufacturerers do not no have f/2 zooms for two reasons. The lenses would be huge, and since Olympus uses a small sensor, the lenses can be small, even with such a big aperture as f/2. And, since they do use such a small sensor, they need a bigger aperture to get the same amount of depth of field(DoF).To get the same DoF as f/2.8 on a full frame sensor, you need f/1.4 on an Olympus sized sensor, and f/2 on APS-C.
That's why they NEED to have f/2 zooms
SpeedFreakNO 11 months ago
@DVL1507 Also, not the focal length never changes. If I had a 50mm lens that fit all cameras, it would be 50mm on any sensor size. So, the focal length NEVER changes when you change sensor sizes. The field of view (FoV) for that focal length do change however. 50mm is 50mm regardless, but the FoV changes.
So let's say 10mm on Olympus equals the same FoV as ca. 15mm on APS-C; and 20mm on full frame. But 10mm on APS-C gives the same FoV as ca. 15mm on full frame, and 6.67mm on Olympus.
SpeedFreakNO 11 months ago
@DVL1507 Final reply: Yes, aperture doesn't change, f/2 gives the same light regardless of sensor size, but two other things change when you move a lens to different sensors:
- 1: Depth of Field changes
- 2: Field of View changes
I'm not sure which statement you mean I made that I'm not sure about.
For Olympus to be competitive in both DoF and FoV, they need big apertures. But they still get more noise compared to bigger sensors, and less DoF at the same apertures as lenses on bigger sensors.
SpeedFreakNO 11 months ago 2
Comment removed
DVL1507 11 months ago
@DVL1507 When you reply like you did to my first comment, and you say the focal length changes, there is no way for me to know what you know about this subject, so I have to spell it out for you. Also, why are you getting personal? This is the last reply from me.
SpeedFreakNO 11 months ago
price for the f.2 lens is too high!
sixameleon 4 years ago
Prices for high end glass with large aperture,ie:f2,are always going to be more expensive,but Im certain you knew that,didn't you? You get what you pay for,a serious photogragher,with a serious lens and camera in hand,can indeed compose a great work of art.
nomeXroC 4 years ago 3