One thing I quickly discovered is the intrusion of the lens hood when adapting 35mm lenses onto the medium format GFX. Since the 50mm Sigma casts an image circle closer to 40mm, it's going to pick up more of what's on the periphery of the field of view; in this case it's the lens hood.... Continue Reading →
If you'd like to contribute your findings, please include lens specifics (brand, focal length, maximum aperture, lens version, firmware version, and if it's weather sealed or stabilized), adapter used, and camera used. Full sensor sample shots without the lens hood (JPEG, 2000x1500 pixel minimum) needs to be of a white or gray background at the widest aperture at both minimum and infinity focus, repeating this at ƒ/8 and at minimum aperture, be it ƒ/22 or ƒ/32.
This is the first in a series of posts on individual lenses adapted to the Fujifilm GFX 50S with the TechArt Pro EF-GFX adapter. Fujifilm GFX 50S, firmware v3.30 (latest) TechArt Pro EF-GFX, firmware v1.01 (latest) Sigma 50mm ƒ/1.4 Art, firmware v2.02 (latest) Summary: Full compatibility: Autofocus, EXIF OK. This lens shows a correctable vignette throughout the aperture range but is heavily affected by focus breathing. As the aperture shrinks, focus toward infinity causes the vignette to become harder and more pronounced. Despite this, it is easily cropped and corrected while maintaining 45mp or more.
As I have alluded to in a burst of recent posts, I am planning to generate a small database of lenses for use on the Fujifilm GFX series. Here's my chance for an introduction to give my rationale and to lay the foundation of this endeavor. I'd like to break this down into three "Y's." Let's begin with a personal "why": I'm choosing to use Sigma lenses to obtain focal lengths and apertures not currently offered in the GF lens lineup. Fujifilm's lineup is sparse at best, and apertures wider than ƒ/2 aren't represented. It's not that I'm a bokeh whore; it's that I need more light gathering for astrophotography and Fujifilm's widest lens, a 23mm, has a maximum aperture of ƒ/4 and that's just not going to work without a star tracker due to the sensor's 51MP resolution. I'm hoping to print a few of these so what counts for "sharp" on the web doesn't work at 20" print sizes. Other benefits: 35mm lenses are much cheaper, especially used prices, and these lenses mostly have direct focusing units unlike the "fly by wire" systems used on Fujifilm lenses. The GFX system just isn't mature enough to have grown both a complete lens lineup or a diverse used lens market.
You're familiar with how they all begin: "this video is sponsored by Squarespace." Ok, well, after that, they then feed you the next line, almost all of it verbatim, "I am not sponsored by (insert brand here). They have not paid me to do this review or told me what to say about it. This review is entirely my own and they don't know I'm making this video. I was/was not provided a sample for the purposes of this review. I am not biased in any way so you can trust what I'm about to say about this product." What they don't mention, obviously, is if they had to return that "review unit." But if you pay close attention, you may catch them using the product in later videos, especially if they were especially laudatory in their review. At least they weren't paid, right? Wrong. Payment is simply one form of compensation. That "review unit" usually comes along with an email that says, "you don't need to send this back to us." Simply put, the item itself is payment. Just because you didn't get to choose the item, the form of compensation or were given a special title associating you with their brand doesn't mean you weren't paid. They paid you with product and exclaiming otherwise is a flat out lie by Youtubers who persistently try to claim otherwise. Rarely are these items cameras and lenses; they're usually "soft goods" or accessories, like bags, lens filter kits, etc. that would likely get damaged during a thorough review period or whose cost of manufacture and/or retail price is so low that the cost of return, reconditioning and resale would consume all or more of the potential profit.
As I've made clear in a previous post, nobody makes the perfect bag. It's a fools errand because "perfect" is subjective and what works for one is completely inadequate for another. However, the more modular a bag is, the better chance for it to become all things to all people by allowing all people to adorn it with all things to meet their needs. Looking further into this idea, especially since Peak Design's recent release of a fully redesigned bag lineup dubbed "v2," I've realized Peak Design is great at making accessories that meet the needs of most people but wrap it all up in bags that don't. Take their 45L Travel Backpack... it converts into a duffel with a forward facing, wide-mouth, zip opening. It's really not great for anything but a duffel bag that turns into a half-assed backpack for longer distance carry, especially for outdoors. However, for camera carry within, they've created camera cubes with efficient padding, mindful access port placement, an abundance of attachment points and durable exterior skin sufficient enough to be used on its own. A quick check of the external dimensions gave me an idea as the camera cube is nearly spot on with the dimensions of Shimoda Designs' large Integrated Camera Unit (ICU) for Explore and Action X backpacks.
Usually, Kickstarter is a collection of scams and bad ideas for internet virgins to be separated from their money. Sometimes, if you know what you're doing, it's a source for good deals. In this case, Shimoda Designs has established itself as a reliable maker of durable, action oriented camera backpacks. Shimoda decided to use Kickstarter as a "group buy" for their new line of Action X backpacks and mine managed to arrive just after Xmas.
A week before the Fremont hike, I grabbed a Shimoda Designs Explore 40 kit from Glazer's Camera. After transferring my gear from the LowePro to the Shimoda, I weighed it and it came out to only 24 lbs. Once I fully loaded the pack with extra clothes, food, water and the extra photography gear needed, it topped 42 lbs. Despite the extra weight, and with a pair of hiking poles, I made it up and down the mountain with my back in far better condition than the previous 2 weekends.
As much as I like Gitzo as a brand and the quality of their products, some of their stuff just isn't as good as others. Take for example their leveling base; Gitzo features a large lever for tightening a head to the base and a handle borrowed directly from their sister Manfrotto's lineup. Instead, I got the series 3 leveling base from Really Right Stuff. It's lighter, has a simpler attachment system with no silly lever and a much sleeker locking handle with, get this, a gear hook! That hook alone is almost priceless, allowing me to attach weight for stability when I'm not leveling the head, ending any need to swap back to the flat top base. Back into the box that can go.