Finally Bloom's review!
- Thread starter gustavo_viral
- Start date
Paul Vicente
Well-known member
Bloom's AF100 Review
Bloom's AF100 Review
As is expected from Philip Bloom, he provides a quick look at this wonderful camera. For the price, if offers a large sensor, excellent quality, and a familiar layout for film and video work.
It is a camera definitely worth having.
I also found it interesting that he said this:
"... sensor size being micro four thirds means most of your 35mm lens are a bit telephoto. With a 2x crop from a full frame 35mm sensor you lose a lot on those lenses. So my 50mm gives me a field of view of 100mm. That is the biggest issue. ....Panasonic urgently need to bring out some fast wide lenses."
I have been concerned about this aspect only, so hopefully the Micro 4/3 format will deliver some reasonably-priced cinema glass that will make this camera shine.
Kudos to Panasonic, and a Thank-you to Philip Bloom.
Paul Vicente
Bloom's AF100 Review
As is expected from Philip Bloom, he provides a quick look at this wonderful camera. For the price, if offers a large sensor, excellent quality, and a familiar layout for film and video work.
It is a camera definitely worth having.
I also found it interesting that he said this:
"... sensor size being micro four thirds means most of your 35mm lens are a bit telephoto. With a 2x crop from a full frame 35mm sensor you lose a lot on those lenses. So my 50mm gives me a field of view of 100mm. That is the biggest issue. ....Panasonic urgently need to bring out some fast wide lenses."
I have been concerned about this aspect only, so hopefully the Micro 4/3 format will deliver some reasonably-priced cinema glass that will make this camera shine.
Kudos to Panasonic, and a Thank-you to Philip Bloom.
Paul Vicente
Matt Gottshalk
Resident Preditor
If someone (birger) came out with a nice adapter for the crop sensor Tokina 11-16mm f/2.8 lens, well that would cover the wider end just fine.
Steve Kahn
Well-known member
Bloom mentions he likes the Sigma 30mm f1.4 (a 4/3 lens) but says that would look like a 60mm on the AF100. I don't believe this is the case.
Correct me if I'm wrong but don't 4/3 lenses have the same FOV as m4/3 lenses on the AF100?
Correct me if I'm wrong but don't 4/3 lenses have the same FOV as m4/3 lenses on the AF100?
Jesse Brauning
Well-known member
Well in the sense, Steve, that all lenses that have a printed FOV have a 2.0x crop on a M4/3 camera when compared to that same lens of a FF camera. You can pop that Sigma 30mm on any camera that will take it, and the lens itself isn't changing. Each sensor just sees a different amount of world through the lens, depending on the size of the sensor. M4/3 is smaller than FF - so it sees less world.
To answer your question more directly: Yes, 4/3 lenses have the same FOV as m4/3 lenses on the AF100. A 50mm lens (all other things being equal) is a 50mm lens, no matter what mount it has on it. The difference in FOV is a function of the sensor size, not the mount.
To answer your question more directly: Yes, 4/3 lenses have the same FOV as m4/3 lenses on the AF100. A 50mm lens (all other things being equal) is a 50mm lens, no matter what mount it has on it. The difference in FOV is a function of the sensor size, not the mount.
Steve Kahn
Well-known member
True, but what I'm saying is that the Sigma 30mm - that is a wide angle lens, as it is a proper 4/3 lens, has the FOV of a native m4/3 30mm lens on a m4/3 camera.
That is, I think Bloom made a mistake thinking it would look like a 60mm on the AF100 as there is NO crop factor with 4/3 lenses on a m4/3 body.
That is, I think Bloom made a mistake thinking it would look like a 60mm on the AF100 as there is NO crop factor with 4/3 lenses on a m4/3 body.
Last edited:
Jesse Brauning
Well-known member
Ah, Steve, but you are SO wrong.
For example: the Panasonic 20mm 1.7 is a M4/3 lens. If you want to use FF as your standard, it like any other 20mm lens, would look like a 40mm on a m4/3 body.
Or, to use a 4/3 lens example, the Panasonic 25mm 1.4 lens, whether it is on a 4/3 body or adapted to a m4/3 body would look like a 50mm would look like on a FF body.
a 4/3 sensor will "crop" ANY lens you put on it from its advertised FOV to an actual FOV as presented by the the sensor. How much its cropping is subjective depending on your frame of reference.
For example: the Panasonic 20mm 1.7 is a M4/3 lens. If you want to use FF as your standard, it like any other 20mm lens, would look like a 40mm on a m4/3 body.
Or, to use a 4/3 lens example, the Panasonic 25mm 1.4 lens, whether it is on a 4/3 body or adapted to a m4/3 body would look like a 50mm would look like on a FF body.
a 4/3 sensor will "crop" ANY lens you put on it from its advertised FOV to an actual FOV as presented by the the sensor. How much its cropping is subjective depending on your frame of reference.
Steve Kahn
Well-known member
What? Are you sure about this? If true this is really horrible. So you're saying the 20mm f1.7 pancake looks more like a standard lens rather than an ultra wide? I don't think that is correct.
A 30mm lens on a 4/3 or m4/3 will give the same angle of view as a 60mm lens on a full-frame 35mm camera. The focal length of the lens stays the same, the angle of view varies according to the imager size. I assume that is what is meant by the 60mm reference.
Cheers,
GB
Paul Vicente
Well-known member
NO, a 30mm lens is a wide angle on a FULL FRAME sensor. On a 4/3 or m4/3 it looks like a standard lens on a full frame sensor.
Keep in mind that lenses are always compared to how they appear on a standard 35mm camera using film.
Anyways, the bottom line is that micro4/3 is a big sensor compared to 1/3 or 2/3 inch cameras, but it is much smaller than full-frame. Thus the crop factor of 1.89-2.0.
So we need fast, wide lenses pronto. The Voigtlander 25mm f/0.95 is a good start for any lens collection (same as a standard 50mm lens on a full-frame 35mm camera).
Paul Vicente
Paul Vicente
Well-known member
It is correct. That is what many of us have been saying on here for weeks.
Steve Kahn
Well-known member
OMFG... that really pisses me off. What a PITA. We need some wide lenses... fast!
CineStill
Active member
Lens Basics
Lens Basics
One easy way to understand focal length and aperture is that if you measure the distance between the front lens element when focused on infinity and the sensor you will find it will match the lens ie 50 mm distance on a 50mm lens. Now if I was able to put a 50mm Hasselblad lens on the AF100 it would perform like a telephoto, on a full frame 35mm stills, like a standard angle of view and on the Hasselblad a wide angle. It remains 50mm on all but only the Hasselblad is making full use of the throw of the lens, the others are only capturing the centre "sweet spot" of the lens. In regards to aperture (not T stops) say you put the 50mm lens on f8 you will notice that the aperture is 6.25mm wide ie 50 divided by 8 = 6.25mm
Philip Blooms footage looks great! gives me peace of mind - I have the same 80-200 Nikon and fully recommend it as a very sharp but reasonable priced lens
Lens Basics
One easy way to understand focal length and aperture is that if you measure the distance between the front lens element when focused on infinity and the sensor you will find it will match the lens ie 50 mm distance on a 50mm lens. Now if I was able to put a 50mm Hasselblad lens on the AF100 it would perform like a telephoto, on a full frame 35mm stills, like a standard angle of view and on the Hasselblad a wide angle. It remains 50mm on all but only the Hasselblad is making full use of the throw of the lens, the others are only capturing the centre "sweet spot" of the lens. In regards to aperture (not T stops) say you put the 50mm lens on f8 you will notice that the aperture is 6.25mm wide ie 50 divided by 8 = 6.25mm
Philip Blooms footage looks great! gives me peace of mind - I have the same 80-200 Nikon and fully recommend it as a very sharp but reasonable priced lens
Last edited:
Matt Gottshalk
Resident Preditor
That's why I just bought an open box Panasonic Lumix 7-14mm 4/3 lens from JR.
I NEED wide angles.
I NEED wide angles.
Matt Gottshalk
Resident Preditor
Matt Gottshalk
Resident Preditor
Jesse Brauning
Well-known member
Yes. This is exactly true. It looks like 40mm if you are thinking a full frame FOV.
However, I would argue that your frame of reference is just wrong. The FOV crop compared to S35 film is just 1.18 - an extremely minor crop difference. Think Hollywood, not photographer, and you'll be put at ease.
Canon's really spoiled everyone with the full frame sensor on the 5D. Stop using it as your comparison.
Steve Kahn
Well-known member
Thanks. I've seen it. Guess I didn't look deeply enough. It just bugs me that I have always thought of 20mm being a really wide angle lens and now... well not anymore. And, I know the 20mm is just a measurement but in my head it has always been a FOV.
Now I need to re-think my whole lens lineup... Oh great, the Voigtlander 25mm f0.95 has now turned into a standard lens. Shoot me now.