Reader Jeff K writes:
I just renewed my subscription to your Medium Format section.
I am about to pull the trigger on a GFX100s. (Assuming I can find one in stock) I like to shoot macros and wonder if you have any experience using the GF extension tubes.
I suppose I will eventually want the GF120 macro lens but will probably buy one of the lenses currently being offered with a rebate, such as the 45mm, along with the body.
So, I am curious as to whether the 45mm and an extension tube might work for macros until I can budget for the GF120 macro.
DIGLLOYD: I was startled to see B&H Photo showing a 6-10 week backorder situation on the Fujifilm GFX100S—I wonder what’s up with that.
If macro is your thing, I would strongly advise the Fujifilm GF 120mm f/4. The Fujifilm GF 250mm f/4 with extension tube could also be interesting.
First, the 35-70mm focuses quite closely, as close as 0.28x = 1:3.6 which on a medium format sensor is very close. And without extension tubes.
Whereas the GF 45/2.8 only goes to 0.14X = 1:7.1, which is a 4X wider area than the 35-70mm, a huge difference if the goal is close-up images. You’d have to add a chunky extension tube just to get to the same magnification as the 35-70, and awkwardly at that.
Second, the 45/2.8 is among the worst choices for macro, having strong field curvature and focus shift as well. Likely to be a frustrating lens to work with for macro.
Finally, I think most people are far better off with the 35mm format for macro work. Many more macro lenss choices, and easier to manage depth of field. OTOH, without automated focus stacking support (which the GFX100S has ), Sony is a make-work headache—Nikon is a better choice in that regard.
Thanks for using my links when buying, eg the Fujifilm medium format wishlist and similar, or any ad on this site.