EF 400mm f/4 DO ii in 2025?

You can also use a Lenscoat Hoodie to cover the front element of the lens in your bag. They come in different sizes.
P-visie, a brilliant suggestion! Do you have one for the 400 DO? As I would be fitting this primarily to the lens without hood, should I get the X-large, rather than the XX-large suggested on the Lenscoat website? Or does the XX-large fit snugly without the hood?
Thanks
 
Upvote 0
P-visie, a brilliant suggestion! Do you have one for the 400 DO? As I would be fitting this primarily to the lens without hood, should I get the X-large, rather than the XX-large suggested on the Lenscoat website? Or does the XX-large fit snugly without the hood?
Thanks
I do not have a EF 400 DO II, so I cannot answer your question directly.

The EF 200-400mm f4 zoom uses the same lenshood (ET-120 WW (II)) as the EF 400mm DO II. I use the hoodie with the lenshood reversed on the lens. The XX Large hoodie is way too large for this lens without the lenshood. The diameter of the EF 200-400mm f4 zoom without the lenshood is about 130mm / 5 inch.

You’d best measure the diameter of the lens without the reversed lenshood. For safety, you could order both sizes and still spend less than half the price of a Canon E112 lens cap ;) .
 
Upvote 0
I do not have a EF 400 DO II, so I cannot answer your question directly.

The EF 200-400mm f4 zoom uses the same lenshood (ET-120 WW (II)) as the EF 400mm DO II. I use the hoodie with the lenshood reversed on the lens. The XX Large hoodie is way too large for this lens without the lenshood. The diameter of the EF 200-400mm f4 zoom without the lenshood is about 130mm / 5 inch.

You’d best measure the diameter of the lens without the reversed lenshood. For safety, you could order both sizes and still spend less than half the price of a Canon E112 lens cap ;) .
Hi Pieter
Thanks for the suggestion. I ordered the smaller one (x-large). The OEM cover is fine for when the hood is reversed.
Bob
 
  • Like
Reactions: 1 user
Upvote 0
I gave the 400 DO a good focusing workout over the weekend. A few swallows were hawking flies over a small pond (our swallows remain here in New Zealand over winter) and I was impressed with the performance of the lens.
The main issue was picking up the birds from piles of wood in the background. I used my standard electronic shutter , eye tracking AF and improved my success rate by:
- limiting focus between 3m and 8m - does anyone use the focus presets to speed up subject acquisition
- limiting the tracking to the middle third of the frame
- using f/5.6 to get more of the bird in focus, although I was impressed how often focusing was accurate wide open at f/4.
Overall I found the lens to be quite manageable handheld.
So on balance, I think I can now sell my RF 100-500L.
BZ5_3600_PR4.jpgBZ5_3606_PR4.jpgBZ5_3668_PR4.jpg
 
  • Like
  • Love
Reactions: 10 users
Upvote 0
Excellent results!
a025.gif
 
  • Like
Reactions: 1 user
Upvote 0
Your advice please in terms of replacing the lensfoot. The standard lensfoot is quite short and not comfortable for holding when carrying the lens.
I am looking at the Hejnar Photo H 133. Hejnar assures me that the lenshood can be reversed with this foot mounted, although it would appear to be tight.
This will reduce the volume of the lens in my camera bag and would appear to be more comfortable when shooting handheld.
Your thoughts would be appreciated.
Thanks, Bob

H133-3.jpg
 
Upvote 0
Your advice please in terms of replacing the lensfoot. The standard lensfoot is quite short and not comfortable for holding when carrying the lens.
I am looking at the Hejnar Photo H 133. Hejnar assures me that the lenshood can be reversed with this foot mounted, although it would appear to be tight.
This will reduce the volume of the lens in my camera bag and would appear to be more comfortable when shooting handheld.
Your thoughts would be appreciated.
Thanks, Bob
There is a thread about this on: https://www.fredmiranda.com/forum/topic/1474843/
 
Upvote 0
I gave the 400 DO a good focusing workout over the weekend. A few swallows were hawking flies over a small pond (our swallows remain here in New Zealand over winter) and I was impressed with the performance of the lens.
The main issue was picking up the birds from piles of wood in the background. I used my standard electronic shutter , eye tracking AF and improved my success rate by:
- limiting focus between 3m and 8m - does anyone use the focus presets to speed up subject acquisition
- limiting the tracking to the middle third of the frame
- using f/5.6 to get more of the bird in focus, although I was impressed how often focusing was accurate wide open at f/4.
Overall I found the lens to be quite manageable handheld.
So on balance, I think I can now sell my RF 100-500L.
View attachment 224411View attachment 224412View attachment 224413
Very impressive shots. For those that haven't tried shooting these in flight, it is not easy and the AF here is spot on.
 
  • Like
Reactions: 2 users
Upvote 0
Quick update. The Lenscoat X-large lens hoodie fits the lens without hood fine, although I suspect the large would be a better (tighter) fit. I tried fitting a Benro 120mm long Arca Swiss plate (PU-120) directly to the lens mount, with the foot removed. It does not clear the inside of the reversed lens hood. It is 10mm thick (high), so I do not think a Hejnar H133 low profile foot (which is 12.5mm thick) will clear a reversed hood. This is contrary to what Hejnar advised me by email. I will get a standard Kirk LP-59 V2 or Leophoto CF-01 lensfoot, as these (at 31mm high) seem to be the lowest that fit outside a reversed hood.
 
Upvote 0
A further update. The lens cap from Bioluminous arrived yesterday. I bought it over the Zemlin version as it was more conservative in styling and it was USD15 cheaper (with exchange rates and shipping to New Zealand this adds up to a total cost of NZD 165), with both made in the US.
Quality is excellent and it fits tight. A much better option than the LensCoat "hoodie" I bought previously and way better than the OEM cover.
Note that the colour is black, not grey as in many online images.
Highly recommended - I just don't understand why Canon (and other major manufacturers) don't provide these instead of the clumsy velco / fabric covers.

BZ5_5145.jpgBZ5_5146.jpgBZ5_5147.jpgBZ5_5148.jpgBZ5_5150.jpgBZ5_5151.jpgBZ5_5152.jpgBZ5_5153.jpg
 
Last edited:
  • Like
Reactions: 1 user
Upvote 0
Hi Frodo
I currently own the EF 400f4 DO IS ii (I bought a perfect condition used one in Dec 2024) to use with my R5 Mark II, R3 and R1 camera bodies, via the EF-RF adaptor. I do also have the EF 1.4x III Extender. I owned an earlier EF 400 f4 DO IS ii bought brand new from about 2016 to 2022 that I used heavily with my Canon 1DX, 1DX Mark II, and 5D Mark 4 bodies sometimes with the EF 1.4x III Extender. I also own and use the RF 100-500L IS right now with my Canon R bodies. With my second time of owning the EF 400 f4 DO IS ii, I find the image quality is pretty good, though impacted a bit negatively with the 1.4 extender. I get obvious advantages using the 400 f4 in extreme low light when compared to my RF 100-500 L, usually before sunrise and for those minutes with some ambient light left after the sun goes down. However, when it comes to autofocus, I am getting a much higher keeper rate of properly sharp shots, from the RF 100-500L IS when compared to even the bare 400 f4 IS ii. The difference in autofocus becomes greater when the subjects are flying very fast so I have not been able to get any properly focused shots with the bare 400 of species like kingfishers which I sometimes do manage with the RF 100-500L IS. On the other hand I did manage to get some images of a leopard walking after sunset with the bare but adapted 400 f4 in Kenya that where not possible with the RF 100-500.
Some folk do have a dislike of some of the background structure of images taken with the 400 DO IS ii, specially when water and reflected highlights might come together but that has never affected my use.
Hope something there useful.
Grant
Hi Grant, I just bought the EF 400mm F/4 DO IS II USM using it on an R5 body. I photograph fighter jets or aviation so is there a trick to get the auto tracking focus to work or a setting I am missing as it seemed not to focus on the plane right away? I sold my RF 100-500 as I thought it was to soft from 350mm on and really did not like the 7.1 at 500mm. Plus I wanted F/4 for some wildlife so I did a lot of research and the lens had great comments when attached to a R5.
 
Upvote 0
Hi Grant, I just bought the EF 400mm F/4 DO IS II USM using it on an R5 body. I photograph fighter jets or aviation so is there a trick to get the auto tracking focus to work or a setting I am missing as it seemed not to focus on the plane right away? I sold my RF 100-500 as I thought it was to soft from 350mm on and really did not like the 7.1 at 500mm. Plus I wanted F/4 for some wildlife so I did a lot of research and the lens had great comments when attached to a R5.
You and Grant have finally talked me out of getting another EF 400mm f/4 DO ii (which would be my third copy). My RF 100-500mm is at least sharp as my last DO ii, and is lightning fast at acquiring focus of flying birds and insects. The DO, although nominally f/4, has a transmission (T) equivalent to f/5. The old EF 100-400mm II has T = 6.3, and so is only 2/3rds of a stop slower, not 1.
 
Upvote 0
You and Grant have finally talked me out of getting another EF 400mm f/4 DO ii (which would be my third copy). My RF 100-500mm is at least sharp as my last DO ii, and is lightning fast at acquiring focus of flying birds and insects. The DO, although nominally f/4, has a transmission (T) equivalent to f/5. The old EF 100-400mm II has T = 6.3, and so is only 2/3rds of a stop slower, not 1.
Searching for more info last night and went out today after work as the boyz were flying. Auto focus locks on and works as fast and the RF. (user error) So I need to get used to no in/out zoom and play with more settings. At least my copy the 100-500 rf was horrible and flat after 350mm so I wont but another one.
 
Upvote 0
Searching for more info last night and went out today after work as the boyz were flying. Auto focus locks on and works as fast and the RF. (user error) So I need to get used to no in/out zoom and play with more settings. At least my copy the 100-500 rf was horrible and flat after 350mm so I wont but another one.
There's copy variation of all lenses. The-digital-picture, for example, has the EF 400mm f/4 DO ii softer than the EF 100-400mm ii, but my two copies were as as sharp as the 3 copies of the EF 100-400mm ii I have had, one reason for not taking seriously reviews that look at just the sharpness of one copy of a lens.

 
Upvote 0
There's copy variation of all lenses. The-digital-picture, for example, has the EF 400mm f/4 DO ii softer than the EF 100-400mm ii, but my two copies were as as sharp as the 3 copies of the EF 100-400mm ii I have had, one reason for not taking seriously reviews that look at just the sharpness of one copy of a lens.

Some of it comes down to test setup. Just changing from the 5Dsr to the 7DII makes the 400 appear much sharper on their site.

Regardless with a $7k MSRP, there really should be more consistency
 
Upvote 0
Some of it comes down to test setup. Just changing from the 5Dsr to the 7DII makes the 400 appear much sharper on their site.

Regardless with a $7k MSRP, there really should be more consistency
It could be just sloppy set up - that 7Dii comparison with the same lens has always puzzled me. I was very happy with the sharpness of my DOiis. Here is a much better comparison from the good old days when Uncle Rog did proper measurements, alas no more - consistent with what I saw.

 
  • Like
Reactions: 1 user
Upvote 0
Yeah mine is reasonably sharp, but gun to my head I’d say the 100-500 is a bit sharper.

The new 70-200 Z + 2x tele adds a wrinkle. Playing around with it, I am pretty sure it is at least as sharp if not sharper than my 100-500. The close MFD also lets me grab shots that I just can’t with the 400. And the loss of light in comparison is not tremendous.

I’m finding myself very tempted to just sell my 100-500 and 400 DO II. And maybe grab a 600 f4 or 800 5.6 down the line (or keep dreaming that Canon eventually produces something akin to Nikons 800 6.3)
 
  • Like
Reactions: 1 user
Upvote 0
Yeah mine is reasonably sharp, but gun to my head I’d say the 100-500 is a bit sharper.

The new 70-200 Z + 2x tele adds a wrinkle. Playing around with it, I am pretty sure it is at least as sharp if not sharper than my 100-500. The close MFD also lets me grab shots that I just can’t with the 400. And the loss of light in comparison is not tremendous.

I’m finding myself very tempted to just sell my 100-500 and 400 DO II. And maybe grab a 600 f4 or 800 5.6 down the line (or keep dreaming that Canon eventually produces something akin to Nikons 800 6.3)
The extra 25% of focal length of the 100-500mm vs 2x200mm makes a significant increase in resolution - which is what I found when comparing the 100-500 with 400/4.
 
Upvote 0
Very happy how my 400 DO ii is performing.
A photo from yesterday, in the early light of a spring day.
The grey warbler is a frenetic little bird with a huge song and difficult to photograph.
Here is a full frame photo with the 1.4x iii - 1/3000 @ f/5.6 ISO 2500 processed in PureRaw4. Plus 2000 and 1000 pixel crops resized to 1500 pixels.
You can see the AF has latched onto the eye and the image is very sharp.BZ5_7222_PR4.jpgBZ5_7222_PR4-2.jpgBZ5_7222_PR4-3.jpg
 
  • Like
Reactions: 4 users
Upvote 0