During this weekend, I have been testing several lenses with the Fuji GFX 50s II camera (in single image mode, and not the Rotating Vertex method) In this case the Sigma 105mm f 1.4 Art lens, which is a huge, 1.6 kilo lens with large lens diameter. Luckily it has a Arca Swiss lens foot - which not only makes it easy to work with this lens on tripod. It also makes it wonderfully easy to switch the camera orientation; whether horizontal or vertical ! I absolutely love this - and it will come in handy for studio portrait work

I don't use AF (autofocus), i switch to manual mode when I focus carefully.


It is slow photography

but has a particular quality combined with tranquility. You work in ways you normally don't work. Everything is becomes more thorough and precis. I really like this - as an opposite of the fast, automatic digital photography. And yet - even the slow style can be done digitally :-)

Now using a larger sensor camera like the Fujifilm GFX 50s II camera together with sharp telephoto lenses, in manual mode - you really have to be thorough in what you are doing.

Then, good quality will not be withheld from you !

In the above main photo, i took a couple images of Sal, while he was sleeping in the other room. The example shows how the Sigma 105mm lens renders the image at wide open aperture ƒ1.4. The corner shading is exaggerated, because I often add a little bit extra shadows around the image borders, like a "soft framing", which keeps the eye's focus inside of the image.


Acts like a 85mm f 1.1 fullframe lens

Due to the larger sensor in the Fuji GFX 50s II, the Sigma lens will show a wider view, equivalent to 85 mm on a fullframe 35mm camera. You could say, that the lens becomes more like 85mm f 1.1 lens - not unlike the famous Canon FD/EF/RF 85/1.2 lens on a fullframe camera / 35mm film camera.

I calculated with a crop factor of 0.79x in order to get the fullframe equivalent.

Notice distortions at the borders !

While not visible in the main photo of Sal above - but I have observed that with many other 35mm lenses adapted to the larger sensor Fuji GFX camera there are distortion / warping effects visible at the very image borders. When you have straight lines in the photo, this becomes suddenly far more visible !


4.3 mm thick sensor glass

I assume that this is caused by the unusual thick sensor glass - in this case 4.3 mm thickness - which warps/distorts the borders. The adapted lenses were never made for this camera with an extra large sensor, nor for such thick sensor glass. So, as the light rays travel though the border of the sensor glass, it gets distorted. Sometimes in ways which are not easily corrected.

It took me quite a while to (mostly) eliminate the distortion effects from the Sigma ART 105mm lens on the Fuji GFX sensor.

Sometimes, the built-in profile for a lens in Adobe Camera Raw, can make the distortion worse (compared to no attached lens profile) I also notice that Adobe Camera RAW sometimes attaches wrong lens profiles (making distortions even worse).

So, please keep an extra eye on the lens profiles in order to avoid a funky look.


Sigma 105/1.4 ART lens is here to stay !

This lens is definitely one of my primary lenses, when I use the Fuji GFX 50s II as a "one-frame" camera, e.g. normally. It is so good in so many ways - that I do not have the need to buy native Fuji GF lenses at this stage, especially since I am using the camera mainly in manual mode. It is NOT a replacement for fullframe AF cameras.

As i mentioned before - if I do wish to go fast and snappy - i use my Canon EOS R6 camera, where functions like continuous following eye-autofocus work simply excellent with lenses like Sigma ART 105 mm or Canon EF 200/2 L IS.


Andoer EF-GFX adapter - take notice

This adapter, will sometimes identify lenses wrong. In the case of the (Canon EF) version of the Sigma 105mm f 1.4 ART lens, it will be identified as "Canon EF 105mmF1.4-0.5 "lens *HUH?!*

I also noticed that the slight warped performance with the wrong lens profile, becomes visible in the viewfinder, too. But as I said, you can at least partially correct the distortion, later with Camera Raw, either by disabling lens profile, or attaching some that fits to neutralize the corner distortions.

Maybe I should get myself the (unfortunately) expensive Fringer Pro adapter after all - it it has an excellent review with adapted lenses on Fuji GFX 50s II. it also allows the Fuji GFX IBIS (in-body image stabilization) with EF lenses without IS (optical lens based image stabilization).

Fujifilm GFX in-body stabilization is not supported when you adapt Canon EF lenses. It only works with manual lenses, it seems (like when I adapted Leica M lenses).

Again. I paid 1300 SEK / 110 Euro for the Andoer adapter - and for that it does very good work: To control the electronic aperture.

The adapter has a USB port visible inside the mount - but is said not to support any firmware updates. so it is just a "dead" port.


Andoer is a Viltrox EF-GFX adapter ?

Another oddity is, that sometimes the EXIF data in the image files shows "Viltrox GFX" adapter. There is a Viltrox EF-GFX PRO adapter for 300 €, but has a bad reputation, due to the unreliable AF performance.

Perhaps the Andoer is the cheaper version of the Viltrox ?

In that case, the Andoer EF-GFX adapter has a good value, if you are aware of that AF doesn't work with all lenses (due to focus errors, or wrong focus).

I use it mainly to control aperture - and use manual focus with my adapted lenses. In that regard, the Andoer adapter is perfect.


Finger Pro (EF-GFX)

It has excellent reputation, and supports IBIS as well IS. But not both together at the same time. You have to choose if you want the lens' built IS, or the Fuji GFX cameras built-in IBIS.

Apparently it support most EF lenses, as well corrections such as vignetting and distortion. It works especially well with the GFX 100 models, because that sensor supports PDAF, while the GFX 50 models only have contrast based AF.

It supports firmware updates, too.



I may actually consider this adapter after all

- because now I am really using some of the best Canon EF based lenses for the Fujifilm GFX 50s II camera. Earlier, before i even have the Fuji camera, i didn't want to invest into an expensive adapter - because I didn't know at all, if I even would use Canon EF lenses on the Fuji camera.

But now, the Canon EF 200/2 L IS, and Sigma 105/1.4 ART are my primary portrait lenses for the Fuji GFX camera. So, the adapter and correct profile identification do play a roll, and may also do with the AF on which some lenses didn't work with the Andoer adapter.

I remember for example that the AF with the Canon EF 200/2 in the near field area, didn't work - only with objects a little bit further and infinity. Also other lenses have shown to be erratic in terms of AF.

Also the Canon EF 135/2 was unusable with the Andoer adapter, focusing wrong. So, the Finger PRO does support this excellent lens, too ! And other Canon lenses showed weird AF performance, too. So, the Finger is now a serious option for me.

Done !

I have the Finger Pro adapter on order now. And I blew my budget with it *grrr*


Here are supported EF mount lenses
with the Finger Pro EF-GFX adapter



Price around 450-500 € at Swedish Amazon

Swedish price at Amazon is 5500 SEK. At Fringer's homepage where you can find a lot of info regarding supported, corrected and recognized lenses etc - it cost $ 475 without tax - which would result into a high price if you import it to Sweden (something like 6500-7000) SEK or so.

That's really a steep price for an adapter !


Watch out with Currency Options
at Amazon, eBay and PayPal

They make you pay higher prices, compared to when you pay the original currency, in this case Dollar, to be drawn from your card/account.

Same shit they pull off at eBay via Paypal. NEVER use your local currency they show to you. When you pay, you ALWAYS use the original currency to be drawn from your account/paycard/credit card. You then pay the banks currency exchange fees, which are lower compared to what eBay/PayPal and Bezo's Amazon add.


Always pay in original currency.

Otherwise they add another couple 110-230 SEK / 10-20 Euro (!) on something that costs lets say 1500-2500 SEK. But they make it sound as if it is to your advantage and "reserve the price for you 48 hours" (eBay/Paypal)

They also makes it weird at Amazon and eBay, where you have to adjust an option TWICE, that you wish to pay in the original currency, and not your local currency.

They are so full of bullshit, and it is really just a way to extract more money from you. The Cheating Zion Business tax for the Goyem Sheep, which I guess is what in the core is prone to corrupt and subvert honest human business forms. Like psychopaths always interfere with good human business - due to their total lack of any standards or good values.

Fucking Bastardies !

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