topic Eos 7d in EOS DSLR & Mirrorless Cameras

Eos 7d

Lindseysa — Sun, 19 Feb 2017 09:19:07 GMT

I've had my 7d for a few years and have been thinking of buying the 16-35mm f/4L lens. As the 7d isn't full frame, will this lens work as I've heard that you can only start using it at 20mm.

Also, has anyone any feedback on the Eos 6d? I take mainly landscape photos and work a lot in low light. Any help would be appreciated

Re: Eos 7d

Peter — Sun, 19 Feb 2017 10:28:02 GMT

@Lindseysa wrote:
I've had my 7d for a few years and have been thinking of buying the 16-35mm f/4L lens. As the 7d isn't full frame, will this lens work as I've heard that you can only start using it at 20mm.

Also, has anyone any feedback on the Eos 6d? I take mainly landscape photos and work a lot in low light. Any help would be appreciated

What do you mean? From my 7D and the display. It reports 16 mm to my camera. If you mean the crop factor that would make it looks like 26 mm, read this:

"Because these sensors are 1.6x smaller than film, they show an area equivalent to the area shown by a lens 1.6x as long on 35mm film.

A 100mm lens on one of these cameras shows the same area of view that a 160mm lens would show on a 35mm film or full-frame camera."

I haven´t used my 6D and 16-35/4L IS together so much, but what I have seen this far is that the unsharp corners and the cromatic aberration that I had from my 17-40/4L are gone.

Re: Eos 7d

Waddizzle — Sun, 19 Feb 2017 10:53:02 GMT

@Lindseysa wrote:
I've had my 7d for a few years and have been thinking of buying the 16-35mm f/4L lens. As the 7d isn't full frame, will this lens work as I've heard that you can only start using it at 20mm.

Also, has anyone any feedback on the Eos 6d? I take mainly landscape photos and work a lot in low light. Any help would be appreciated

The EOS 6D is an excellent camera for shooting landscapes, and other still life scenes. I enjoy shooting landscapes, too. My favorite camera/lens combination for landscapes is the 6D and the EF 16-35mm f/2.8L II USM lens. I shoot most of my landscapes at f/5.6. The only time I shoot wide open with the lens is indoors, without a flash. I think f/4 is just fine for landscapes. I also use a tripod most of the time.

One a full frame camera, a 16-35mm lens has a very wide angle of view, but not so much on an APS-C sensor body camera like the 7D. How well the 16-35mm would work on your 7D is pretty subjective. You should get great photos with it.

Re: Eos 7d

TTMartin — Sun, 19 Feb 2017 11:16:46 GMT

@Lindseysa wrote:
I've had my 7d for a few years and have been thinking of buying the 16-35mm f/4L lens. As the 7d isn't full frame, will this lens work as I've heard that you can only start using it at 20mm.

Also, has anyone any feedback on the Eos 6d? I take mainly landscape photos and work a lot in low light. Any help would be appreciated

The 7D has a 1.6X crop factor, so the 16-35mm f/4L has a field of view equivalent to a 26mm - 55mm lens on a full frame camera.

If you'd like a Ultra-Wide Angle lens for your 7D, get the EF-S 10-18mm IS STM. You'll be very pleased and have saved a tone of money. The 10-18mm IS STM has a field of view equivalent to a 16mm - 29mm lens on a full frame camera

Re: Eos 7d

ebiggs1 — Sun, 19 Feb 2017 15:31:53 GMT

"I take mainly landscape photos and work a lot in low light."

I doubt the 6D will help. I would stick with your 7D. There seems to be this 'labeling' going on as to what a certain camera can photograph. It is mostly nonsense. However you do need to get into a wider AOV lens for more ease at landscapes. But I have shot landscapes with a 150mm lens, so much for that.

The Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens is a possibility. But I would rather opt for the incredible Canon EF 8-15mm f/4L Fisheye USM Lens. Another outstanding choice would be the Tokina AT-X 16-28mm f/2.8 Pro FX Lens. It may be the sharpest lens in that focal length.

Re: Eos 7d

Mitsubishiman — Sun, 19 Feb 2017 16:12:30 GMT

I have a 7D, and I have utilized the 16-35 F4, I found it to be a good combination, However the new 16-35 F2.9L III is phenomenal

Re: Eos 7d

TTMartin — Wed, 22 Feb 2017 16:45:20 GMT

Keep in mind the crop factor on your camera.

16mm isn't ultra-wide angle on a crop camera.

Fish-eye lenses will have distortion that you are probably not looking for.

The EF-S 10-18 IS STM lens is the best lens for your camera and your needs.

Don't be fooled into believing that spending more money will give you better image quality. Canon's STM lenses have great image quality, at prices that seem to good to be true. But, be assured Canon STM lenses are the real deal.

Re: Eos 7d

Waddizzle — Wed, 22 Feb 2017 17:06:44 GMT

@TTMartin wrote:
Keep in mind the crop factor on your camera.

16mm isn't ultra-wide angle on a crop camera.

Fish-eye lenses will have distortion that you are probably not looking for.

The EF-S 10-18 IS STM lens is the best lens for your camera and your needs.

Don't be fooled into believing that spending more money will give you better image quality. Canon's STM lenses have great image quality, at prices that seem to good to be true. But, be assured Canon STM lenses are the real deal.

The EF 8-15mm Zoom Fisheye, is a very different lens on an APS-C sensor body compared to a full frame.

As good as the image quality may be with the EF-S 10-18mm, I would still prefer the internal focusing and zooming, and the wider zoom range and overall better build of the EF-S 10-22mm lens.

Re: Eos 7d

ebiggs1 — Wed, 22 Feb 2017 17:07:06 GMT

"Fish-eye lenses will have distortion that you are probably not looking for."

Yeah, just like this shot.

Canon 7D, 8-15mm f4L @ f16, SS 1/400, ISO 100

"Don't be fooled into believing ..."

Right, don't be. The 10-18mm is not an 'L' lens no matter how much folks want it to be. No ef-s lens is an 'L'. Never wil be. However, if the 10-18mm fills the bill, I agree, there is no good reason to spend more money that won't offer anything in return.

Lenses are a total package and as such should be treated that way. You do need to consider it all. Price, build, reliable, repairable, and, yes image quality, etc. All of it.

Proverb: Buy the best and cry once!

Re: Eos 7d

Waddizzle — Wed, 22 Feb 2017 17:17:19 GMT

@ebiggs1 wrote:
"Fish-eye lenses will have distortion that you are probably not looking for."

Yeah, just like this shot.

@Canon 7D, 8-15mm f4L @ f16, SS 1/400, ISO 100

[deleted]

Proverb: Buy the best and cry once!

That shot is exactly what I mean. The EF 8-15mm Zoom fisheye is a very different lens, period. It is not your average zoom.

Re: Eos 7d

TTMartin — Wed, 22 Feb 2017 18:23:26 GMT

@ebiggs1 wrote:
"Fish-eye lenses will have distortion that you are probably not looking for."

Yeah, just like this shot.

@Canon 7D, 8-15mm f4L @ f16, SS 1/400, ISO 100

Yes, exactly like that one, where the tower is vertical, but the horizon is not horizontal. Which would be fine if this were a picture of the Leaning Tower of Pisa, but, it is not.

Re: Eos 7d

ebiggs1 — Thu, 23 Feb 2017 15:32:44 GMT

Oh dear me. You are too much!

The horizon not being level is a fault by me. Not the lens. This is simply a snapshot and not actually designed to show anything. But it does show you know nothing about this lens. Doesn't it?

Re: Eos 7d

TTMartin — Thu, 23 Feb 2017 19:02:51 GMT

@TTMartin wrote:
@ebiggs1 wrote:
"Fish-eye lenses will have distortion that you are probably not looking for."

Yeah, just like this shot.

@Canon 7D, 8-15mm f4L @ f16, SS 1/400, ISO 100

Yes, exactly like that one, where the tower is vertical, but the horizon is not horizontal. Which would be fine if this were a picture of the Leaning Tower of Pisa, but, it is not.

Again, Tower is vertical, horizon is not horizontal, NOT the tower and the horizon both are tilted the same. Additionally the building on the right side of the photo tilts to the left. This is distortion from trying to computer correct lens distortion from a fisheye lens. The only user error is believing that you can simply and easily correct for fisheye lens distortion with post processing. BTW, that's an awful lot of post processing to do for a 'simple snap shot'. SMH

Re: Eos 7d

Waddizzle — Thu, 23 Feb 2017 19:27:14 GMT

Psst, Tom. The 8-15mm Zoom Fisheye is a very unique lens. You do not necessarily have to correct for fisheye distortion in post when you use a crop body, because the lens can correct for it when you capture the image. The lens can function as an ultra wide zoom, or as a fisheye prime. I keep trying to tell you that it really isn't your typical zoom lens.

Re: Eos 7d

RobertTheFat — Thu, 23 Feb 2017 20:16:13 GMT

Waddizzle wrote:
Psst, Tom. The 8-15mm Zoom Fisheye is a very unique lens. You do not necessarily have to correct for fisheye distortion in post when you use a crop body, because the lens can correct for it when you capture the image. The lens can function as an ultra wide zoom, or as a fisheye prime. I keep trying to tell you that it really isn't your typical zoom lens.

I guess I don't see how the lens can correct its own fisheye distortion. I could understand it if you're saying that since fisheye distortion is greatest near the perimeter, a crop camera won't see the worst of it. Then if you position the image carefully, you can toss it to Photoshop to be corrected as though it came from a really crappy rectilinear WA lens. Is that basically it? Or is that what Tom was saying, and we're both missing something?

Re: Eos 7d

Waddizzle — Thu, 23 Feb 2017 20:31:53 GMT

@RobertTheFat wrote:
@Waddizzle wrote:
Psst, Tom. The 8-15mm Zoom Fisheye is a very unique lens. You do not necessarily have to correct for fisheye distortion in post when you use a crop body, because the lens can correct for it when you capture the image. The lens can function as an ultra wide zoom, or as a fisheye prime. I keep trying to tell you that it really isn't your typical zoom lens.
I guess I don't see how the lens can correct its own fisheye distortion. I could understand it if you're saying that since fisheye distortion is greatest near the perimeter, a crop camera won't see the worst of it. Then if you position the image carefully, you can toss it to Photoshop to be corrected as though it came from a really crappy rectilinear WA lens. Is that basically it? Or is that what Tom was saying, and we're both missing something?

I have no idea how they do it, but the lens is not a fisheye throughout its' entire zoom range, only at 8mm, and even then only on a full frame body. I have been looking at buying one because it is a super ultra wide zoom over the rest of its' range, particularly with a crop body, which i believe does not use the entire zoom range at all. Call it 10-15mm, for argument's sake, when you use a crop body. It has zoom stops for full frame, APS-C, and APS-H bodies. Check out an owner's manual or a product description. It really is not your typical zoom lens.

Re: Eos 7d

TTMartin — Thu, 23 Feb 2017 20:58:55 GMT

@Waddizzle wrote:
@RobertTheFat wrote:
@Waddizzle wrote:
Psst, Tom. The 8-15mm Zoom Fisheye is a very unique lens. You do not necessarily have to correct for fisheye distortion in post when you use a crop body, because the lens can correct for it when you capture the image. The lens can function as an ultra wide zoom, or as a fisheye prime. I keep trying to tell you that it really isn't your typical zoom lens.
I guess I don't see how the lens can correct its own fisheye distortion. I could understand it if you're saying that since fisheye distortion is greatest near the perimeter, a crop camera won't see the worst of it. Then if you position the image carefully, you can toss it to Photoshop to be corrected as though it came from a really crappy rectilinear WA lens. Is that basically it? Or is that what Tom was saying, and we're both missing something?
I have no idea how they do it, but the lens is not a fisheye throughout its' entire zoom range, only at 8mm, and even then only on a full frame body. I have been looking at buying one because it is a super ultra wide zoom over the rest of its' range, particularly with a crop body, which i believe does not use the entire zoom range at all. Call it 10-15mm, for argument's sake, when you use a crop body. It has zoom stops for full frame, APS-C, and APS-H bodies. Check out an owner's manual or a product description. It really is not your typical zoom lens.

Just because the edges aren't cut off at some focal lengths like a circular fisheye, doesn't mean there isn't barrel distortion. The zoom stops you talk about are simply where the corners don't start to get cut off, NOT where there isn't any barrel distortion.

Re: Eos 7d

Waddizzle — Thu, 23 Feb 2017 21:47:00 GMT

@TTMartin wrote:
@Waddizzle wrote:
@RobertTheFat wrote:
@Waddizzle wrote:

Just because the edges aren't cut off at some focal lengths like a circular fisheye, doesn't mean there isn't barrel distortion. The zoom stops you talk about are simply where the corners don't start to get cut off, NOT where there isn't any barrel distortion.

What focal length do you think was used in Ernie's shot? I think it is closer to the longer end, than the shorter end. My entire point has been simple, that the lens looks very different on a crop body, compared to a full frame, and this behavior is by design.

BTW, I made no claim that the lens exhibits no barrel distortion, just that it is very different on an APS=C body. But, I would bet the lens has less barrel distortion than the EF-S 10-18mm zoom at similar focal lengths, on a crop body. So, I really do not see the point of your arguments.

Re: Eos 7d

TTMartin — Thu, 23 Feb 2017 22:23:23 GMT

@Waddizzle wrote:
I would bet the lens has less barrel distortion than the EF-S 10-18mm zoom at similar focal lengths, on a crop body. So, I really do not see the point of your arguments.

I would take that bet, since the EF 8mm-15mm fisheye 'makes no attempt to correct the huge barrel distortion', where the EF-S 10mm-18mm IS STM and the EF-S 10mm-22mm USM are 'rectilinear'* wide angle lenses.

* a rectilinear lens is a photographic lens that yields images where straight features, such as the walls of buildings, appear with straight lines, as opposed to being curved. In other words, it is a lens with little or no barrel or pincushion distortion.

Re: Eos 7d

ebiggs1 — Thu, 23 Feb 2017 22:53:14 GMT

"BTW, that's an awful lot of post processing to do for a 'simple snap shot'."

And, that is an awful lot of baloney from you, friend. You know nothing of what you speak. There is no post done on that shot except for the LR lens correction done on import. And, that my friend I do on every single photo I import so it is not a singular effect done to the 8-15mil.

"I would take that bet, since the EF 8mm-15mm fisheye 'makes no attempt to correct the huge barrel distortion',"

Again, my friend, you would lose. I believe the exif in intact with that shot.

Since you seem to be so ignorant about this lens, I again repeat this was just a snap shot. There was no attempt to correct for anything. I simply saw tha Mall and raised the 7D and took the shoot.

Whether you want to admit it or not the Canon EF 8-15mm f/4L Fisheye USM Lens is an amazing and unique lens. It is one of my favorite lens to play around with. Since you never used one, you probably shouldn't try so hard to analyze it. Hmmmm?