Tamron 18-400 on 5d4

[PhotosByHall]

Hi all,

I recently purchased the Tamy 18-400.

With some careful handling its a useful, fun lens, that does take good wildlife shots at f8.

Now my question is - will it fit on a 5d4 \ full frame canon?

I have mounted it with taking a shot, but want to be sure it can't impact the mirror or anything. I know it will vignette heavily as it can't cover the whole sensor.

Just wondering

Cheers

 

[Mark B.]

Hi all,

I recently purchased the Tamy 18-400.

With some careful handling its a useful, fun lens, that does take good wildlife shots at f8.

Now my question is - will it fit on a 5d4 \ full frame canon?

While this 3rd party lens is an EF mount and as such will fit on any Canon EF mount body, bear in mind it is designed for crop sensor.

I have mounted it with taking a shot, but want to be sure it can't impact the mirror or anything. I know it will vignette heavily as it can't cover the whole sensor.

Just wondering

Cheers

TBH not sure why you would want to use a consumer-grade 22x zoom lens on a high-end FF body that will yield a heavily vignetted image that will have to be cropped. A 2nd hand copy of the first version 100-400 f/4-5.6L would be a better choice. IQ noticeably better, and no cropping.

Mark

 

[PhotosByHall]

Hi all,

I recently purchased the Tamy 18-400.

With some careful handling its a useful, fun lens, that does take good wildlife shots at f8.

Now my question is - will it fit on a 5d4 \ full frame canon?

While this 3rd party lens is an EF mount and as such will fit on any Canon EF mount body, bear in mind it is designed for crop sensor.

Cool, so it will fit and won't hit the mirror, just wanted to know.

TBH not sure why you would want to use a consumer-grade 22x zoom lens on a high-end FF body that will yield a heavily vignetted image that will have to be cropped. A 2nd hand copy of the first version 100-400 f/4-5.6L would be a better choice. IQ noticeably better, and no cropping.

Mark

I just wanted to know if it will work in extremis.

I'm aware its a soft consumer-grade zoom. I've got the 70-200L f4 for high quality pro work.

This 18-400 is gonna spend most of its time on my Canon m50 anyway, where it makes a very long 28-640mm lens - i just wanted to know if it will work.

 

[Rahto]

I went with the Tamron 28-300 for my 5DIV, its a full frame superzoom.

 

[ProfHankD]

Hi all,

I recently purchased the Tamy 18-400.

With some careful handling its a useful, fun lens, that does take good wildlife shots at f8.

Now my question is - will it fit on a 5d4 \ full frame canon?

While this 3rd party lens is an EF mount and as such will fit on any Canon EF mount body, bear in mind it is designed for crop sensor.

Cool, so it will fit and won't hit the mirror, just wanted to know.

I'm not so sure it will even mount.

Canon actually has two different, but very similar, mounts for EF and EF-S. The APS-C lenses are generally EF-S, which has a different alignment mark (white square vs. red dot) and some other tweaks to prevent mounting it on EF bodies. Canon APS-C (well, 1.6X crop) bodies generally have BOTH EF and EF-S alignment marks, but FF just have the red dot.

TBH not sure why you would want to use a consumer-grade 22x zoom lens on a high-end FF body that will yield a heavily vignetted image that will have to be cropped. A 2nd hand copy of the first version 100-400 f/4-5.6L would be a better choice. IQ noticeably better, and no cropping.

Mark

I just wanted to know if it will work in extremis.

I don't think rear protrusion is an issue... but if it is EF-S mount, I'm not sure you can mount it. Perhaps Tamron made it EF so it would work on either, but the Tamron site shows a white alignment square, so it shouldn't mount.

I'm aware its a soft consumer-grade zoom. I've got the 70-200L f4 for high quality pro work.

Vignetting will be the issue, not softness. APS-C cameras have higher pixel density than FF, so resolution will not be an issue (at least not in the center). Unlike Sony, Canon didn't think it would be reasonable to use any APS-C lenses on FF, so they don't detect crop lenses.

This 18-400 is gonna spend most of its time on my Canon m50 anyway, where it makes a very long 28-640mm lens - i just wanted to know if it will work.

You'll find out easily. If it doesn't mount, it will not work. ;-)

 

[Mark B.]

Hi all,

I recently purchased the Tamy 18-400.

With some careful handling its a useful, fun lens, that does take good wildlife shots at f8.

Now my question is - will it fit on a 5d4 \ full frame canon?

While this 3rd party lens is an EF mount and as such will fit on any Canon EF mount body, bear in mind it is designed for crop sensor.

Cool, so it will fit and won't hit the mirror, just wanted to know.

I'm not so sure it will even mount.

Canon actually has two different, but very similar, mounts for EF and EF-S

Yes, I'm 100% aware of that.

. The APS-C lenses are generally EF-S, which has a different alignment mark (white square vs. red dot) and some other tweaks to prevent mounting it on EF bodies. Canon APS-C (well, 1.6X crop) bodies generally have BOTH EF and EF-S alignment marks, but FF just have the red dot.

However, Canon is actually the only lens manufacturer making lenses with an EF-S mount. 3rd party lenses, whether designed for FF or crop, are EF mount.

TBH not sure why you would want to use a consumer-grade 22x zoom lens on a high-end FF body that will yield a heavily vignetted image that will have to be cropped. A 2nd hand copy of the first version 100-400 f/4-5.6L would be a better choice. IQ noticeably better, and no cropping.

Mark

I just wanted to know if it will work in extremis.

I don't think rear protrusion is an issue... but if it is EF-S mount, I'm not sure you can mount it. Perhaps Tamron made it EF so it would work on either, but the Tamron site shows a white alignment square, so it shouldn't mount.

I'm aware its a soft consumer-grade zoom. I've got the 70-200L f4 for high quality pro work.

Vignetting will be the issue, not softness. APS-C cameras have higher pixel density than FF, so resolution will not be an issue (at least not in the center). Unlike Sony, Canon didn't think it would be reasonable to use any APS-C lenses on FF, so they don't detect crop lenses.

This 18-400 is gonna spend most of its time on my Canon m50 anyway, where it makes a very long 28-640mm lens - i just wanted to know if it will work.

You'll find out easily. If it doesn't mount, it will not work. ;-)

Go look up the Tamron lens. The mount is in the specs.

Mark

 

[ProfHankD]

However, Canon is actually the only lens manufacturer making lenses with an EF-S mount. 3rd party lenses, whether designed for FF or crop, are EF mount.

Well, the alignment mark on the lens seems to say otherwise. That said, it wouldn't surprise me if they have a EF mount with an EF-S alignment mark, in which case it probably will mount.

I don't think rear protrusion is an issue... but if it is EF-S mount, I'm not sure you can mount it. Perhaps Tamron made it EF so it would work on either, but the Tamron site shows a white alignment square, so it shouldn't mount.

Obviously, I did look it up... which is how I know they show the white square on it.

You'll find out easily. If it doesn't mount, it will not work. ;-)

Go look up the Tamron lens. The mount is in the specs.

See above. The specs I found carefully avoided saying EF or EF-S, instead calling it Canon mount for APS-C bodies. Cute, but that could well mean it's neither EF nor EF-S, but an EF mount with an EF-S alignment mark... which would mean it probably does mount.

BTW, if so, there is a way to avoid the vignetting: mount it on a generic EF 1.5X teleconverter. That will result in similar view angles to what you get on APS-C, with little or no vignetting. Most lenses thus adapted actually do a little better that way on FF than they do native on APS-C bodies, although you will have a darker OVF view because 1.5X means you're losing 1 stop.

 

[Mark B.]

However, Canon is actually the only lens manufacturer making lenses with an EF-S mount. 3rd party lenses, whether designed for FF or crop, are EF mount.

Well, the alignment mark on the lens seems to say otherwise. That said, it wouldn't surprise me if they have a EF mount with an EF-S alignment mark, in which case it probably will mount.

I don't think rear protrusion is an issue... but if it is EF-S mount, I'm not sure you can mount it. Perhaps Tamron made it EF so it would work on either, but the Tamron site shows a white alignment square, so it shouldn't mount.

Obviously, I did look it up... which is how I know they show the white square on it.

Means nothing. It's an EF mount. It's really not a matter of opinion. There are people on the 1D/5D/6D forum that have mentioned mounting it directly on these bodies. A true EF-S mount lens cannot be mounted on a FF Canon w/o permanently modifying the mount; there are no adapters.

You'll find out easily. If it doesn't mount, it will not work. ;-)

Go look up the Tamron lens. The mount is in the specs.

See above. The specs I found carefully avoided saying EF or EF-S, instead calling it Canon mount for APS-C bodies. Cute, but that could well mean it's neither EF nor EF-S, but an EF mount with an EF-S alignment mark... which would mean it probably does mount.

Yes, it will absolutely mount on EF. The listing literally says that:

Tamron 18-400mm f/3.5-6.3 Di II VC HLD Lens for Canon EF

However, in the description of the lens it states it is specifically designed for APS-C, so there will be severe vignetting when used on a FF body.

So, it is an EF mount lens but only for use on APS-C. My guess is that the 3rd party lens makers simply didn't want to reverse-engineer the EF-S mount, so they used the EF mount which they already have.

BTW, if so, there is a way to avoid the vignetting: mount it on a generic EF 1.5X teleconverter. That will result in similar view angles to what you get on APS-C, with little or no vignetting. Most lenses thus adapted actually do a little better that way on FF than they do native on APS-C bodies, although you will have a darker OVF view because 1.5X means you're losing 1 stop.

No way would I mount a 1.5x on that lens. The optical quality is already compromised. The resulting image will be poor.

 

[briantilley]

Hi all,

I recently purchased the Tamy 18-400.

With some careful handling its a useful, fun lens, that does take good wildlife shots at f8.

Now my question is - will it fit on a 5d4 \ full frame canon?

While this 3rd party lens is an EF mount and as such will fit on any Canon EF mount body, bear in mind it is designed for crop sensor.

Cool, so it will fit and won't hit the mirror, just wanted to know.

I'm not so sure it will even mount.

It will. As Mark B has already pointed out, this lens has an EF mount.

 

[ProfHankD]

The specs I found carefully avoided saying EF or EF-S, instead calling it Canon mount for APS-C bodies. Cute, but that could well mean it's neither EF nor EF-S, but an EF mount with an EF-S alignment mark... which would mean it probably does mount.

Yes, it will absolutely mount on EF. The listing literally says that:

Tamron 18-400mm f/3.5-6.3 Di II VC HLD Lens for Canon EF

Interesting. Tamron's specs do NOT say that -- you're reading B&H marketing info. Perhaps Tamron avoids that type of explanation to avoid getting sued? After all, there's officially explicitly no such thing as an EF APS-C lens.

However, in the description of the lens it states it is specifically designed for APS-C, so there will be severe vignetting when used on a FF body.

So, it is an EF mount lens but only for use on APS-C. My guess is that the 3rd party lens makers simply didn't want to reverse-engineer the EF-S mount, so they used the EF mount which they already have.

As discussed, yeah, that's probably what they did. Just note that the white alignment mark is not in the same spot as the red mark when you mount it.

BTW, if so, there is a way to avoid the vignetting: mount it on a generic EF 1.5X teleconverter. That will result in similar view angles to what you get on APS-C, with little or no vignetting. Most lenses thus adapted actually do a little better that way on FF than they do native on APS-C bodies, although you will have a darker OVF view because 1.5X means you're losing 1 stop.

No way would I mount a 1.5x on that lens. The optical quality is already compromised. The resulting image will be poor.

No. A teleconverter doesn't do much good with a FF lens, but a FF 1.5X teleconverter is essentially the opposite of an APS-C focal reducer. It'll spread the resolution of the APS-C optic over the FF field, allowing more of it to be captured. Thus, you'll typically get a little better quality image on FF using a decent 1.5X converter than you'd get native on an APS-C body.

See my published research paper, Mixing and matching sensor format with lens coverage , from Electronic Imaging 2016, showing that 1.5X teleconverters typically produce this benefit for APS-C lenses on FF. Also from that paper, be warned that many teleconverters do not correctly adjust the lens data -- you want one that does. If your camera had IBIS, getting the focal length corrected by the 1.5X teleconverter would be critical; with a 5DIV, it'll just make the EXIF data wrong and possibly make the PDAF logic slightly less effective.

 

[Mark B.]

The specs I found carefully avoided saying EF or EF-S, instead calling it Canon mount for APS-C bodies. Cute, but that could well mean it's neither EF nor EF-S, but an EF mount with an EF-S alignment mark... which would mean it probably does mount.

Yes, it will absolutely mount on EF. The listing literally says that:

Tamron 18-400mm f/3.5-6.3 Di II VC HLD Lens for Canon EF

Interesting. Tamron's specs do NOT say that -- you're reading B&H marketing info. Perhaps Tamron avoids that type of explanation to avoid getting sued? After all, there's officially explicitly no such thing as an EF APS-C lens.

Wow, I give up then. Maybe you should mention that to the people on the Canon FF forum that have in fact mounted the lens on their cameras w/o any modification. Facts are facts. It really is an EF mount lens designed specifically for APS-C. So I'm not sure how there can be no such thing, when such a thing exists.

However, in the description of the lens it states it is specifically designed for APS-C, so there will be severe vignetting when used on a FF body.

So, it is an EF mount lens but only for use on APS-C. My guess is that the 3rd party lens makers simply didn't want to reverse-engineer the EF-S mount, so they used the EF mount which they already have.

As discussed, yeah, that's probably what they did. Just note that the white alignment mark is not in the same spot as the red mark when you mount it.

BTW, if so, there is a way to avoid the vignetting: mount it on a generic EF 1.5X teleconverter. That will result in similar view angles to what you get on APS-C, with little or no vignetting. Most lenses thus adapted actually do a little better that way on FF than they do native on APS-C bodies, although you will have a darker OVF view because 1.5X means you're losing 1 stop.

No way would I mount a 1.5x on that lens. The optical quality is already compromised. The resulting image will be poor.

No. A teleconverter doesn't do much good with a FF lens, but a FF 1.5X teleconverter is essentially the opposite of an APS-C focal reducer. It'll spread the resolution of the APS-C optic over the FF field, allowing more of it to be captured. Thus, you'll typically get a little better quality image on FF using a decent 1.5X converter than you'd get native on an APS-C body.

See my published research paper, Mixing and matching sensor format with lens coverage , from Electronic Imaging 2016, showing that 1.5X teleconverters typically produce this benefit for APS-C lenses on FF. Also from that paper, be warned that many teleconverters do not correctly adjust the lens data -- you want one that does. If your camera had IBIS, getting the focal length corrected by the 1.5X teleconverter would be critical; with a 5DIV, it'll just make the EXIF data wrong and possibly make the PDAF logic slightly less effective.

You're still putting a teleconverter on what is already a mediocre lens to begin with, regardless of how the data is reported it will result in an even less mediocre image.

This will be my last reply to this thread, it's gotten off topic and there's no more to say.

Mark

 

[akbc]

Take a look at https://www.kenrockwell.com/tamron/18-400mm.htm, in the "Format" section, he said it won't mount on Canon FF cameras. I know a lot of folks don't think of Ken Rockwell much but I look at it from time to because it does have useful information on stuff the manufacturer specs that is not clearly published on their sites.

Nikon is a little different, the DX lenses have the same mount and it will work on a Nikon FF. Not to detract from the topic, I just read an article from Tamron EU about a guy using their 16-300mm DI II or DX format lens on a D800e https://www.tamron.eu/magazine/blog/detail/practical-test-tamron-16-300mm-f35-63-di-ii-vc-pzd-303/

 

[briantilley]

Take a look at https://www.kenrockwell.com/tamron/18-400mm.htm, in the "Format" section, he said it won't mount on Canon FF cameras. I know a lot of folks don't think of Ken Rockwell much but I look at it from time to because it does have useful information on stuff the manufacturer specs that is not clearly published on their sites.

I seriously doubt that Ken has actually tried mounting the Canon version on a FF camera.

 

[Heritage Cameras]

Well, here's a DPReview thread where a user has tested this lens on his EOS 5D(SR):

https://www.dpreview.com/forums/thread/4203828

...so clearly the mount is EF, or it wouldn't fit. The thread shows the vignetting you'll get on a full frame camera.

 

[briantilley]

Well, here's a DPReview thread where a user has tested this lens on his EOS 5D(SR):

https://www.dpreview.com/forums/thread/4203828

...so clearly the mount is EF, or it wouldn't fit. The thread shows the vignetting you'll get on a full frame camera.

That seems pretty conclusive - thanks!

 

[akbc]

Take a look at this video on Youtube which explains why EF-S mount lens will have a problem with EF mount FF frame body especially in the case of a zoom lens. It looks like the mount of the Tamron 18-400 is like this Canon zoom lens used in the video demo. The rear element of the Tamron will hit the mirror if you remove the guard like he did in the video at a certain zoom range. I guess you can made the mod but at the risk of the rear lens element hitting the mirror and cause damage to either the rear lens element or mirror or both.

 

[briantilley]

Take a look at this video on Youtube which explains why EF-S mount lens will have a problem with EF mount FF frame body especially in the case of a zoom lens.

We all know that Canon EF-S mount lenses cannot be mounted on Canon FF cameras.

The thread that Heritage Cameras linked to above proves (to me, anyway) that the Tamron 18-400mm is not an EF-S mount lens, and therefore can be mounted on a Canon FF camera.

 

[ProfHankD]

Well, here's a DPReview thread where a user has tested this lens on his EOS 5D(SR):

https://www.dpreview.com/forums/thread/4203828

...so clearly the mount is EF, or it wouldn't fit. The thread shows the vignetting you'll get on a full frame camera.

That seems pretty conclusive - thanks!

Yup. Also pretty clear that you'd be best off mounting it on a FF 1.5X teleconverter, because there's virtually no coverage beyond the APS-C frame and a FF sensor generally has fewer pixels in the APS-C region than most native APS-C sensors have.

 

[briantilley]

Well, here's a DPReview thread where a user has tested this lens on his EOS 5D(SR):

https://www.dpreview.com/forums/thread/4203828

...so clearly the mount is EF, or it wouldn't fit. The thread shows the vignetting you'll get on a full frame camera.

That seems pretty conclusive - thanks!

Yup. Also pretty clear that you'd be best off mounting it on a FF 1.5X teleconverter, because there's virtually no coverage beyond the APS-C frame and a FF sensor generally has fewer pixels in the APS-C region than most native APS-C sensors have.

Maybe, but before getting too side-tracked, let's remember that the OP just wanted to know if it would mount:

I just wanted to know if it will work in extremis.

I'm aware its a soft consumer-grade zoom. I've got the 70-200L f4 for high quality pro work.

This 18-400 is gonna spend most of its time on my Canon m50 anyway, where it makes a very long 28-640mm lens - i just wanted to know if it will work.