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FE lens on APS-C body (Sony)
- Thread starter Catcher05
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Yes it will work. There will be no quality loss. Don't worry about the math, just have fun taking pictures.
Texas Eric
New member
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So there will be issues if I get Full frame lenses for my Sony a6000? In case I change to a a7rii later on.
I thought there was a loss of quality when shooting FE lenses on an APS-C sensor ?
PC Wheeler
Forum Pro
Might even be better, since the outer edges of the lens won't be seen by the APS-C sensor.
Ray Maines
Senior Member
No, No, No, a thousand times No. In fact, the image quality might even be better. The thought behind this is that if the edges are soft, why don't we just throw away the edges and look a the sharper middle part of the photo?
Don't over think this. Everything is really simple if you have only one camera and are using different lenses. It get's kind of weird if you have one lens and two or more cameras.
Any F/1.8 lens will produce the exact same DoF as any another F/1.8 lens at the same focal length on any one given camera. Just as the Angle of View will be the same with every lens of the same focal length on any one given camera.
ALL of this "equivalence" silliness relates to the size of the sensor and not to the lens in question.
In actual practice, the focal length of the lens is the most important factor in determining which lens is right for you. Seriously, if the focal length is wrong the Depth of Field won't make a bit of difference. A technically perfect stupid, boring photo that's cropped wrong is still going to be a stupid, boring photo that's cropped wrong.
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sigh. There will not be any issues using FE lenses on an a6000. period. ever.
Pixel Pooper
Senior Member
Yes, compared to using the lens on a full frame there will be a loss of quality, but using an APS-C lens instead will not be any better. The loss of quality is due to the smaller sensor, not the larger lens.
M
mcslsk
Guest
No, quality doesn't change. Aperture stays the same. It'll turn into a short tele (what an 80mm lens would look like on FF) on APS-C.
Pixel Pooper
Senior Member
Using the lens on a smaller sensor reduces resolution across the whole frame, so while there might be less fall off towards the edges, the lens will still perform worse overall on APS-C than it will on FF. A lens used on APS-C needs 50% more resolution to match a lens used on FF, so unless the edges are more than 50% worse than the centre you won't see any improvement. Even if this was the case, the trade off for better edge performance would be worse centre performance.
M
mcslsk
Guest
That's the difference between APS-C and FF. The lens and the IQ it produces doesn't change.
Ray Maines
Senior Member
Not there won't!!
The logic supporting that argument is twisted and simply wrong.
There is NOTHING, absolutly simply NOTHING optically bad about using a FF lens on an APS/C camera. You could argue that a FF lens is too big, too heavy, too expensive, or the focal length is inapropate, but there is nothing really "wrong" about using a FF lens on an APS/C camera.
The IQ isn't going to somehow magicly going to go down because the image circle is bigger than the sensor.
PC Wheeler
Forum Pro
That's a down-under phenomenon I've not heard of. On this side of the equator what you say is just not true
Pixel Pooper
Senior Member
It's not magic, it is photography 101. At the same display size, details that were the same size on the sensor are 50% larger in the image from a crop sensor, so they appear softer. It's the same as if you crop an image and then display it at the same size as the original, the cropped image is softer than the original.
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Pixel Pooper
Senior Member
No, it's the same on both sides of the equator. At the same display size, the APS-C sensor has greater enlargement so it is softer.That's a down-under phenomenon I've not heard of. On this side of the equator what you say is just not true
The lens is going to project the same image to its image plane no matter what size sensor is on the body. The difference is only how much of that projection will land on the sensor... So a APS-C will only capture a smaller projection than a FF sensor. There is zero loss in image quality from the lens, just loss of field of view because the sensor isn't large enough to cover the full projection for the lens.
If hypothetically speaking, the lens' resolving power is lower than the pixel density on the sensor, then you will see a loss in image quality. But in today's world, you will probably have to look for a lens that can't out resolve the sensor.... And FE lens are probably not one of them
If hypothetically speaking, the lens' resolving power is lower than the pixel density on the sensor, then you will see a loss in image quality. But in today's world, you will probably have to look for a lens that can't out resolve the sensor.... And FE lens are probably not one of them
kaiser soze
Well-known member
I think it is more correct to say that it is a difference in the integral effect of the lens combined with the camera, i.e., not a difference in the body per se.
kaiser soze
Well-known member
I live in the northern hemisphere, and what PP wrote seems essentially correct to me, although I'm not completely certain that it is exactly 50%.That's a down-under phenomenon I've not heard of. On this side of the equator what you say is just not true
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Phil
kaiser soze
Well-known member
It seems to me that if you use different focal lengths so that the field of view will be the same for both cameras, that there will then be a difference in depth of field. Maybe you didn't insinuate otherwise. Hard to tell.
kaiser soze
Well-known member
Not correct.
M
mcslsk
Guest
Sorry, The lens doesn't change. APS-C delivers less IQ than FF. And the question was whether the lens losses quality on APS-C.
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