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Full frame lens on APC camera body
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Aug 31, 2022 22:45:06   #
junglejim1949 Loc: Sacramento,CA
 
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification

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Aug 31, 2022 22:51:48   #
TriX Loc: Raleigh, NC
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


Please post a link to the video.

The only advantage I can think of is an APC vs a full frame lens of the same speed (max aperture) and FL is that the APC lens will be smaller/lighter and possibly less expensive. This has been discussed some number of times previously.

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Aug 31, 2022 23:20:39   #
Ysarex Loc: St. Louis
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


I do it all the time. Most of my lenses are FX lenses and I use them regularly on my DX bodies. Works great. Better results if I used DX lenses? I very much doubt that.

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Sep 1, 2022 01:55:52   #
therwol Loc: USA
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


From what I understand from reading here and elsewhere, a lens designed to cover a smaller area can perform better over that smaller area than a lens designed for a larger area. I read this as long ago as the 1970s where the resolution of 35mm, medium format and large format lenses were compared in something I read. The drop in resolution as the film size went up was compensated for by not needing to magnify the larger film sizes as much in either projection or printing.

Please post a link to the video so that we can see what you're seeing.

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Sep 1, 2022 03:07:58   #
robertjerl Loc: Corona, California
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


I own almost all FF lenses so I can switch them back and forth from body to body. The APS-C crop sensors see only the middle of the image circle thrown by a FF lens and that is usually the sharpest part of the image.
I have one FF and 4 APS-C bodies in EF and one APS-C R7 that I have one RF-S lens (it was the kit lens) and one FF RF lens. I also have the EF to RF adapter so I can use all my EF and EF-S lenses on the R7. And I have various tele-extenders for all those lenses that can function with one. 1 1.4x III for the EF lenses, 1 1.4x RF extender for my RF 100-400, 1 Kenko Pro 300 in 1.4x and 1 in 2.0x and a Kenko MC adapter that is the only one the EF 70-300L can have all functions work with.
My wife and daughter each have an APS-C EF-S body and 4 or 5 lenses each, most of theirs are EF-S to keep things smaller and lighter.

I have not really noticed the crop lenses being better on the crop bodies but then I am not looking for anything like that.

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Sep 1, 2022 05:34:04   #
chrisg-optical Loc: New York, NY
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


Tony is promoting a myth - the Angry Photog has lambasted him quite a few times and destroyed his assertion that only a DX lens is best on a DX camera. The ONLY significance of a DX lens is that it projects a smaller image circle so it just covers the crop sensor area, but a 24mm lens is a 24mm lens regardless whether it is a DX or FX lens. It is a hardcore fact that IQ of any lens drops off as you get closer to the edge of the circle - typically sharpness drops and vignetting increases - with an FX lens on a DX sensor you are largely cropping these uglies out of the image. A DX lens with an image circle that barely covers the APSC sensor is likely to exhibit more vignetting and drops in sharpness towards the edges of the frame. BTW there are many other factors that affect lens IQ. Tony is working on the assumption that the smaller image circle is projecting more light on the sensor (hence he believes this results in better IQ) but this is not what IQ is all about although there is a tiny bit of truth to that. DX lenses tend to be smaller and lighter than their FX counterparts, but this also means they are not as well made - plastic mounts, plastic barrels and lens supports, other construction compromises. There are only 4 DX lenses (out of 30+ Nikon has made) that the Angry Photog has recommended. One of them I had - the 35mm 1.8 - a very good DX "normal" lens for the F mount. I also liked the 10-20 DX lens (cheap plastic mount but otherwise good construction) too even though he did not recommend that one. Other than that I always sought after the FX lenses for use on the D7200.

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Sep 1, 2022 07:07:03   #
cedymock Loc: Irmo, South Carolina
 
TriX wrote:
Please post a link to the video.

The only advantage I can think of is an APC vs a full frame lens of the same speed (max aperture) and FL is that the APC lens will be smaller/lighter and possibly less expensive. This has been discussed some number of times previously.


This is a link that I found, not sure if it is the one OP was speaking of.
https://www.youtube.com/watch?v=S8-vfiq33R4

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Sep 1, 2022 07:22:20   #
JD750 Loc: SoCal
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


I think it’s a matter of how you define the word better. Better or worse is subjective.

There are simply trades that are made.
Each person will evaluate the trades and decide if it’s better or worse for them.

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Sep 1, 2022 07:28:11   #
Architect1776 Loc: In my mind
 
TriX wrote:
Please post a link to the video.

The only advantage I can think of is an APC vs a full frame lens of the same speed (max aperture) and FL is that the APC lens will be smaller/lighter and possibly less expensive. This has been discussed some number of times previously.



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Sep 1, 2022 07:47:36   #
LFingar Loc: Claverack, NY
 
junglejim1949 wrote:
I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera. This is not what I have been hearing from other UHH members... You just get more reach.

Thanks for the clarification


The 'reach' will be the same with either type of lens. As far as any difference in the image, with lenses of equal quality I would guess that only the most dedicated pixel-peeper would notice any difference.

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Sep 1, 2022 07:59:32   #
Longshadow Loc: Audubon, PA, United States
 
JD750 wrote:
I think it’s a matter of how you define the word better. Better or worse is subjective.

There are simply trades that are made.
Each person will evaluate the trades and decide if it’s better or worse for them.



(Probably also depends on what brand microscope one uses to detect any difference.)

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Sep 1, 2022 08:02:41   #
Canisdirus
 
Yes, it's a big conspiracy.

Engineering lenses to match sensors is a tin foil hat conspiracy...propagated by Big Pharma probably.

Full frame on a crop body is the same as ...cropping your FF image in post process.
Now we all know what happens when we crop...loss of detail...always...sometimes very little...sometimes quite a bit.
It depends on your camera...the lens...there will be loss though.

So Northrup was right. The answer is yes and no...it depends.

Engineering standpoint...crop lenses matched to crop body...better.
Every matched system ought to be better.

It depends on which lens...which body.

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Sep 1, 2022 08:11:23   #
Longshadow Loc: Audubon, PA, United States
 
Canisdirus wrote:
Yes, it's a big conspiracy.

Engineering lenses to match sensors is a tin foil hat conspiracy...propagated by Big Pharma probably.

Full frame on a crop body is the same as ...cropping your FF image in post process.
Now we all know what happens when we crop...loss of detail...always...sometimes very little...sometimes quite a bit.
It depends on your camera...the lens...there will be loss though.

So Northrup was right. The answer is yes and no...it depends.

Engineering standpoint...crop lenses matched to crop body...better.

It depends on which lens...which body.
Yes, it's a big conspiracy. br br Engineering len... (show quote)



Just wondering,,,, Is "Every matched system ought to be better." an OCD thing?

(So glad I simply view images on their own merit.)

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Sep 1, 2022 08:17:14   #
petrochemist Loc: UK
 
APSC lenses can be designed for a higher pixel density, so there might be a small margin of truth in it, but I've always been happy with the results of my better FF lenses on APSC & MFT, and even the tiny Pentax Q

Some of my poorer FF lenses don't impress on FF and a few of these are acceptable on crop systems.

My experience with Mr Northrups videos is he's more interested in generating clicks than in being factual. I stopped watching his videos years ago.

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Sep 1, 2022 08:19:27   #
camerapapi Loc: Miami, Fl.
 
"I watch a video (Tony Northrop) who said, although you can use a full frame lens on a crop sensor camera, you will get better results using APC lenses with an APC camera."

I do not understand what Mr. Northrop is trying to say. The DX lens will cover the whole sensor area, it was designed to do that but unless the FX is of better quality I do not see how it could be better. We all know the FX lens will project an image toward the center of the DX sensor and a majority of lenses are at their best at the center. Using the FX lens with the DX sensor we all know the "digital factor" of 1.5 is applied to the focal length, very convenient when using a tele.

I often use a DX lens with a DX body. I cannot say that using a FX lens the images are different than those made with the DX lens except, as I said, when the FX lens is of superior quality.

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