X-T5 with Digital Tele-Conv. On 1.4x

The Fujifilm X-T5 generates stunning 40MP photography with its APS-C sensor
But I find that the photo files are rather heavy, on average 50 M for RAF and 22 M for JPG
I found it interesting to evaluate the “conv-Tele digital 1.4x” option of the sensor and get 20MP photos

So I found it natural to compare the 20MP of the X-T5 with the 21MP of my Nikon D500
For the comparison, I used the 35mm and the 56mm for the Fujifilm
and the 50mm and 85mm for the Nikon D500

Example:

Fujifilm 35mm APS-C = 52.5mm FF x1.4 for 20 MP = 74mm
Nikon 50mm APS-C x 1.5 = 75mm

Fujifilm 56mm APS-C = 84mm FF x1.4 for 20 MP = 117.6mm
Nikon 85mm APS-C = 127.5mm

Nikon D500 (2016) 100% / Fujifilm X-T5 (2022) 100% by Marc Aubry, sur Flickr

Nikon D500 (2016) 50% / Fujifilm X-T5 (2022) 50% by Marc Aubry, sur Flickr

To see the full comparison, click here

In the end, I noticed two drawbacks, even though 20MP files are now only 10M for JPGs
But unfortunately, the files remain as cumbersome for the RAF "50 M"
And the second downside is that each time the camera closes, it loses my "Tele-Conv. on 1.4x" selection.

To conclude, I find the results of the 20MP of the X-T5 very convincing compared to the Nikon D500
But for the two disadvantages mentioned above, this function becomes useless and very unpleasant to use.

Hope I wasn't too vague!

Nikon D500 (2016) / Fujifilm X-T5 (2022) by Marc Aubry, sur Flickr

Nikon D500 (2016) / Fujifilm X-T5 (2022) by Marc Aubry, sur Flickr

To my eye, the images on the left have more detail and the way you documented this I think that's the D500. This is typical of what happens when one crops.

Morris

Thank you very much for your comments, Hoping that other spirits will manifest 😎

To whom it May concern ;)
See in the manual p.175

OF = normal to get a 40 MP image
1.4X = a crop to get a 20 MP image
2.0X = a crop to get a 10 MP image

Great examples!
Personally I find the X-T5 results better overall, one thing you might have noticed is that you also have to multiply the crop factor by 1.4x too.
So, for the 56 1.4 for example, its 56x1.5x1.4 for the focal length and 1.4x1.5x1.4 for the aperture too, ie 118 f3
So, for equivalence you might need to stop down further on the Nikon to get comparable results.

I don't like that it reverts to normal fl on power down but a custom setting can be applied.

What custom setting are you talking about, to keep "conv-Tele digital 1.4x" active?

I don’t have an XT5 to test but I wouldn’t be at all surprised if the digital teleconverter was one of the options that can be controlled by the XT5 Custom Presets. Update: this isn’t the case. One cameras X-S10 and newer, the custom presets go way beyond “looks”, and offer control of operational camera functions as well. Sometimes touching functions I wish I could opt to leave be.

I don't know the world of Fuji X very well, I have been using Nikon digital cameras for 20 years.
I really like my X-T5, but the documentation and the menus are not the clearest.
I would appreciate it if someone can explain to me clearly how to set the X-T5 to retain the 1.4x crop function

See here the detailed version of the manual p.175

My first impulse was to try and bind it to a custom setting - but to my great annoyance, I found the option greyed out when trying to do so. I couldn't begin to imagine why Fuji would not allow this, but hey, never been a camera without some quirks. Unless someone has a different idea, your best workaround is probably to just bind the Digital TC to a function button and re-select it upon each startup...

That's exactly what I did, but it gets very annoying after a while. Function to forget for me.

I stand corrected.

Sorry, I have X-H2, and assumed the Custom dial stored it, unfortunately not. So will need to be custom button, lower front :)

I tested my XT5. There’s no way to have it remember the TC setting. The best you can do is to assign it to a button or My Menu. I was able to assign it to the VIEWMODE button and it cycles through normal, 1.4x, and 2x each time you press it.

Thank you all very much for your feedback. 👍🏻

Nikon D500 (2016) 21MP / Fujifilm X-T5 (2022) *20MP

Nikon D500 (2016) 50% / Fujifilm X-T5 (2022) 50% by Marc Aubry, sur Flickr

My X-H2 also does not remember the TC setting. I think both sets of images look about the same for image detail. I do not understand how croping can degrade the image quality or detail, its just a crop of the original. But saying that the X-H2 manual does state that using the digital TC can slightly degrade the image quality. But I could not see this. I assumed that the digital TC is just a straight crop of the center of the whole sensor, and displays only the crop in the EVF.

Indeed, with the "Tele-Conv. on 1.4x" frame, the format is very close to µ4/3
If it allowed the option to memorize the 1.4x We would have two cameras A 40 MP APS-C and a 20 MP micro 4/3 😄 👍🏻

To see the comparison it's here

Yes, exactly what I was thinking. I use one of the buttons to change the TC settings, so not a real problem for me.
For some of the scientific research I do, the digital TC is ideal (plus the high res EVF on the X-H2). I use a camera to track whales and need to quickly switch from 300mm to 420mm at times. I was thinking of getting a M4/3 camera but the X-H2 is a much better option.

Why not just shoot at Medium or Small size...

Using the digital TC is similar to using a real TC but it keeps the same F-stop value. Shooting at smaller resolution will re-sample the image, the digital TC is a simple crop, and you get the enlarged view in the EVF. Smaller sizes give you the same field of view as full size image but at a lower resolution. The TC will give you a narrower field of view (~longer FL) also at reduced resolution.

And with 40 MP sensors for APS-C or 60-100 MP for FF
Using digital TC becomes usable. 😎

The result would be exactly the same.