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Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread

  
 
ruthenium
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p.4 #1 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


If you shoot with the 50-400 at minimum focus distances (MFD), the following might be of interest to you.
I did some additional measurements, and here are the key observations.
1) Tamron 50-400 lens magnification ratio drops from 0.5 at 70 mm FL and 27 cm MFD to 0.25 at 167 mm FL at 76 cm from the target to camera sensor (at 167 mm FL the lens cannot focus when the distance is shorter that 76 cm).
2) Lens magnification ratio drops further to 0.21 at 195 mm FL when MFD is 1 m (100 cm)
3) Lens magnification ration is close to 0.27 at 400 mm FL when MFD is 146 cm.

These results are illustrated by the following uploads where we are looking at a $1 bill. Interestingly, the printed part of the bill (excluding the borders) is 147 mm, in a 4.08 to 1 ratio to the sensor width of 36 mm. Thus, when the lens magnification is 0.25, we expect to see the $1 billl occupy the space almost exactly from edge to edge of the picture (and sensor) frame.
Upload 1 illustrates this point. This image was taken at 167 mm when the lens magnification is very close to 0.25
Upload 2 is an image at 195 mm when the magnification dropped to 0.21
Upload 3 is an image at 400 mm, when the magnification ratio is close to 0.27
Upload 4 is a compilation of the central crops from uploads 1 - 3, for a closer inspection. I don't see any significant differences. When pixel-peeping, I see a slight loss of contrast at 400 mm, compared to the image at 167 mm, but this difference is not visible without pixel-peeping. Also, I have observed a systematic improvement of the image contrast on closing from f/6.3 (lens is wide-open) to f/8, but once again, I doubt this should be visible without pixel-peeping, especially at ISO higher than 100.

The bottom line: to achieve a magnification greater than 0.25 - 0.27, the FL should be in the 70 to 160 mm range, with the corresponding distances to the subject in the 27 to 70 cm range. Considering that the length of the camera system is 21 to 24 cm from the sensor to the front element of the lens (without the hood), this means that the front side of the lens is going to be at about 6 to 46 cm to the subject.
When shooting this close is impossible for some practical reason, perhaps it would make sense to zoom in all the way to 400 mm and shoot from the MFD of 146 cm (roughly 1.5 m).
There seems to be no benefit in shooting at the MFD from 170 mm to < 400 mm FL.





  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    167mm    f/6.3    1/10s    100 ISO    0.0 EV  






  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    195mm    f/6.3    1/8s    100 ISO    0.0 EV  






  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    400mm    f/6.3    1/8s    100 ISO    0.0 EV  








Edited on Nov 16, 2023 at 06:39 PM · View previous versions



Nov 15, 2023 at 11:25 PM
ruthenium
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p.4 #2 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


To add to the above post, an example of shooting at 70 mm, at a close distance




  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    70mm    f/5.0    1/200s    160 ISO    -1.7 EV  




Nov 15, 2023 at 11:35 PM
ruthenium
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p.4 #3 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


I spent some time shooting today at the minimum focus distance.
The lens performed really well. Here are two examples: one is at 400 mm, and the other is at 117 mm.





  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    400mm    f/6.3    1/400s    4000 ISO    0.0 EV  






  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    117mm    f/6.3    1/125s    1600 ISO    0.0 EV  




Nov 16, 2023 at 06:44 PM
j4nu
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p.4 #4 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


ruthenium wrote:
If you shoot with the 50-400 at minimum focus distances (MFD), the following might be of interest to you.
I did some additional measurements, and here are the key observations.
1) Tamron 50-400 lens magnification ratio drops from 0.5 at 70 mm FL and 27 cm MFD to 0.25 at 167 mm FL at 76 cm from the target to camera sensor (at 167 mm FL the lens cannot focus when the distance is shorter that 76 cm).
2) Lens magnification ratio drops further to 0.21 at 195 mm FL when MFD is 1 m (100 cm)
3) Lens magnification ration is close to
...Show more

I can't explain it seeing your results, but when I tried it I've seen noticeably worse performance at MFD wide open on the long end than on the short end...



Nov 17, 2023 at 05:28 AM
ruthenium
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p.4 #5 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread




j4nu wrote:
I can't explain it seeing your results, but when I tried it I've seen noticeably worse performance at MFD wide open on the long end than on the short end...

Jan (I hope I haven't misspelled your first name), would you like to have a look at my raw images of the $1 bill? The differences we are seeing or not seeing might be due to physical differences in our copies of the lens, but these can possibly be due to different post-processing. All my jpgs posted in this thread originate from DxO Photolab 7 that applies a "lens softness correction", and this might work differently from the lens corrections in the program you are using, or from the same in-camera. I am only guessing, I don't know for sure. When I looked at the $1 bill images on the camera screen, at a large magnification, I also saw that the 400mm image had less contrast, but not dramatically so. I can think of this being corrected by DxO PL7, or simply not being visible unless pixel peeping. The only way to establish the origin of the differences between our observations is by comparing the raw files, and I can make these available for download.



Nov 17, 2023 at 07:59 AM
ruthenium
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p.4 #6 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


A quick question. Presumably, when shooting at 400 mm at MFD your camera was on a tripod, correct? The question is whether the lens stabilization was turned off, or not? The 50-400 is the first lens in my experience that visibly moves the image when on a tripod and the lens stabilization is on. I have not seen this begaviour with the Sony teles.
Thus, when shooting with the 50-400 on a tripod, I make sure that the stabilization is switched off on the lens.

j4nu wrote:
I can't explain it seeing your results, but when I tried it I've seen noticeably worse performance at MFD wide open on the long end than on the short end...




Nov 17, 2023 at 09:18 AM
j4nu
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p.4 #7 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


ruthenium wrote:
A quick question. Presumably, when shooting at 400 mm at MFD your camera was on a tripod, correct? The question is whether the lens stabilization was turned off, or not? The 50-400 is the first lens in my experience that visibly moves the image when on a tripod and the lens stabilization is on. I have not seen this begaviour with the Sony teles.
Thus, when shooting with the 50-400 on a tripod, I make sure that the stabilization is switched off on the lens.



Thanks, I think I can manage without the RAWs. I don't have the Tamron anymore but I probably have my tests shots somewhere. I took them one after another also with 100-400GM and they were simply handheld at reasonable SS with stabilization ON (and maybe also stopped down too for comparison). At 50mm the Tamron is obviously very sharp, as it's its macro range, but on the long end I recall some loss of contrast. Anyways, it would be impressive if DxO was capable of fixing the sharpness falloff due to MFD.
And yes, it's Jan .



Nov 17, 2023 at 04:24 PM
hasenbein
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p.4 #8 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


In a moor forest near my home.
At 204mm, 400mm, 142mm.




















Nov 19, 2023 at 03:04 AM
Frederik0711
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p.4 #9 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


j4nu wrote:
Thanks, I think I can manage without the RAWs. I don't have the Tamron anymore but I probably have my tests shots somewhere. I took them one after another also with 100-400GM and they were simply handheld at reasonable SS with stabilization ON (and maybe also stopped down too for comparison). At 50mm the Tamron is obviously very sharp, as it's its macro range, but on the long end I recall some loss of contrast. Anyways, it would be impressive if DxO was capable of fixing the sharpness falloff due to MFD.
And yes, it's Jan .


I'm curious; what did you replace the 50-400 Di with? I have had two copies of the 100-400 GM and 100-400 DN, and one of the 50-400 Di, and I always end up selling them due to being bothered by how they extend, and I think 200-300mm is enough for me most of the time (Denmark is very flat and dense). When I want longer, I pack my 200-600 G. Also had the 70-200 GM II (regret selling it), which I previously bought due to GAS. It's hard to justify when just being an enthusiast, but I think I will get the 70-200 GM II again, as I think it more enjoyable with the faster aperture, internal zoom and handling teleconverters well. I've saved up for a while, so I think it's time for GAS to hit. Sold all of my autofocus lenses except the 200-600 G, as I went in to a manual focus phase, but I'm probably done with that. At first, being limited to primes and manual focus inspired me, but now I'm just bothered by it. I focus stack many of my images now, and will probably get the a7R V for its focus bracketing.

I do a mix of landscape, architecture, wildlife and macro ((please make an AF 2x, Sony (I like the 2x Laowa lenses, but want AF for focus bracketing)), but I tend to prefer the former most of the time. But it also comes in handy for some occasional events. Sometimes, I do need 300-400mm for architecture, but 200 is mostly fine, and I can add a teleconverter. The 16-35 g or 17-50 Di and 50-400 Di makes up for a truly versatile kit, but I need something much wider (12mm or wider), so I would need a 3 lens kit anyway.
Only the 12-24 GM makes sense for me; the 12-24 G is outdated, and the 14-24 DN is not wide enough, though I would prefer an update to the 12-24 G to save a bit, or even a 10-20 f/4, like the recent RF 10-20. My widest lens is the Laowa 9, and as long as the widest autofocus zoom doesn't reach 10mm or wider, I will keep it. And I might as well add the 24-70 GM II then to complete the set. My dream kit would be two lenses from 10/12 to 200 (yes, I did consider 12-24 and 28-200, but was not satisfied).



Nov 25, 2023 at 04:57 PM
j4nu
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p.4 #10 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


Frederik0711 wrote:
I'm curious; what did you replace the 50-400 Di with? I have had two copies of the 100-400 GM and 100-400 DN, and one of the 50-400 Di, and I always end up selling them due to being bothered by how they extend, and I think 200-300mm is enough for me most of the time (Denmark is very flat and dense). When I want longer, I pack my 200-600 G. Also had the 70-200 GM II (regret selling it), which I previously bought due to GAS. It's hard to justify when just being an enthusiast, but I think I will
...Show more

I'm afraid I don't have an answer for you. My case is a bit special as I very rarely go on photo-only trips, so I like my lenses to be able to do general shooting as well as their main purpose. That's why I like 17-50/4 for example, even though optically it's inferior to 14-24/2.8DN.
So, I kept my 100-400GM but barely use it. I like it as I can, if I ever decide to, add a TC to it, it also has the best AF for tracking and it's constant MFD with reasonable magnification is very convenient. What's not convenient is its size, weight, color and haptics (so-so zooming smoothness), which is why I didn't even take it for my last vacation. Anyways, I also prefer its rendering for causal shots, though Tamron's 50mm is a lot more useful on the wide end...
I should just sell it and use Tamron 70-300/4.5-6.3 (that missing stabilization though) for my rare "long" needs at 1/5 of the cost .



Nov 25, 2023 at 06:54 PM
 


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ruthenium
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p.4 #11 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


To revive the thread: two pictures from a small artisan workshop where most products are made from scrap metal. I wanted to get a close shot without getting close, and the 400 mm helped. The ISO is on the higher side, as the light wasn't great inside the workshop, that isn't a problem today given the modern denoising tools (DxO DeepPRIME XD).




  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    400mm    f/6.3    1/125s    6400 ISO    0.0 EV  






  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    336mm    f/8.0    1/60s    6400 ISO    0.0 EV  




Jan 09, 2024 at 11:40 AM
Ziocomposite
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p.4 #12 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


Purchased the lens Early last week and was able to give her a try for about 3 days. This was my first "Telephoto" zoom and was pleasantly surprised at how much having a wide 50 came of use. That being said, noticed how my usage was always at the 400 range and ended up returning for the 200-600 (wildlife/birding). That being said, I would be open to getting her again later down the line for more compact and travel purposes as for that purpose IMO is unrivaled.


A7R5 - 400mm (Crop Mode/600mm) by Spiiicy Chips, on Flickr



Jan 11, 2024 at 01:48 PM
walk3rs
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p.4 #13 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread





Jan 12, 2024 at 09:24 PM
ruthenium
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p.4 #14 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


This dear lady reminds me my mom when she was in her late eighties - early nighties.
(Naturally, I asked for permission before taking the picture)




  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    50mm    f/5.6    1/100s    500 ISO    0.0 EV  




Jan 14, 2024 at 03:18 PM
ruthenium
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p.4 #15 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


In December, I was in a small cave that had a broken (caved in) ceiling at the entrance. I looked up, and saw this little beauty above my head, perched on a twig. The image was cropped from 50 to 38 MP.
There were many bats in the cave.




  ILCE-1    E 50-400mm F4.5-6.3 A067 lens    400mm    f/6.3    1/400s    1600 ISO    -2.3 EV  




Jan 16, 2024 at 11:25 PM
hasenbein
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p.4 #16 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


Yesterday we finally had nice light on a hike (20 km with some steep passages, so the workout aspect was also present :-) ) in the German "Vogler" mountains. The Tamron 50-400 was on the camera all the time.


























Jan 28, 2024 at 09:39 AM
hasenbein
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p.4 #17 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


Some from Iceland recently, shot with the Tamron 50-400. My favorite lens.


























Aug 22, 2024 at 12:51 AM
steamtrain
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p.4 #18 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


hasenbein wrote:
In a moor forest near my home.
At 204mm, 400mm, 142mm.

https://i.postimg.cc/RF2v061R/DSC02388.jpg



This picture is a very nice one imo. Well done.



Aug 22, 2024 at 04:11 AM
SouthFla
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p.4 #19 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread


Really loving this lens! Had it for a while on my A7RV, mostly to do landscape stuff, but recently been trying my hand with birds and am finding it to be pleasantly awesome! Some pics from last few tries at hummies in the garden (unfortunately still no colorful males : )




  ILCE-7RM5    E 50-400mm F4.5-6.3 A067 lens    400mm    f/8.0    1/1250s    2000 ISO    -0.7 EV  






  ILCE-7RM5    E 50-400mm F4.5-6.3 A067 lens    400mm    f/8.0    1/1000s    1250 ISO    -0.3 EV  






  ILCE-7RM5    E 50-400mm F4.5-6.3 A067 lens    400mm    f/8.0    1/1000s    1250 ISO    -2.3 EV  




Aug 23, 2024 at 04:57 PM
hasenbein
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p.4 #20 · Tamron 50-400mm f/4.5-6.3 Di III VC VXD Image Thread




SouthFla wrote:
Really loving this lens! Had it for a while on my A7RV, mostly to do landscape stuff, but recently been trying my hand with birds and am finding it to be pleasantly awesome! Some pics from last few tries at hummies in the garden (unfortunately still no colorful males : )

Did you process these with special sharpening tools? (Like Topaz?)



Aug 24, 2024 at 12:56 AM
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