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  1. rdeloe

    Schneider-Kreuznach APO-Digitar 35mm f/5.6 L-88° on GFX

    Schneider-Kreuznach sold the APO-Digitar 35mm f/5.6 in various housings, and in two models, the well known one being the later XL-102° in a Copal 0 shutter. Much less common is the L-88° version in a Schneider-Kreuznach electronic shutter that is screwed to a lens board for the Plaubel digital...
  2. rdeloe

    Image circles and shift spreadsheet

    I often see posts where people are wondering how much they can shift using a particular lens and sensor. There are some nice tools out there already for well-known combinations of lenses and sensors, e.g., the DT image circle visualization tool. However, I've found it's easier to use a...
  3. rdeloe

    Center Filters -- skiing off piste with the S-K APO Digitar 35mm f/5.6 XL

    Quick question: has anyone had any luck using the "wrong" center filter with the Schneider-Kreuznach APO Digitar 35mm f/5.6 XL? The "correct" options are the IIf (M52.5x0.75 thread, with M72x0.75mm front thread, 4x) and the customized IIg, I believe for the Alpa version (M67x0.75mm thread and...
  4. rdeloe

    Your favourite “bang for the buck” lenses

    On a graph that had cost of lens on the Y-axis and performance of lens on the X-axis, the bottom-right quadrant would have low cost but high performance – in other words, lenses that offer lots of “bang for the buck”. Many people on this forum have lenses from the top-right corner of my graph...
  5. rdeloe

    Generative AI and photography -- what will it mean for you?

    Generative AI -- think ChatGPT for text and Stable Diffusion for images -- is going to have a huge impact on just about everything. It's making one side of my job easier (e.g., summarizing masses of information into a few core ideas), and it's making other parts so much harder (fighting...
  6. rdeloe

    Is tilt still relevant?

    Hell yes! Article here: https://www.robdeloephotography.com/Pages/Is-tilt-still-relevant I wrote this material for people who are dipping their toes into the camera movements water because of the new GF 30mm f/5.6 T-S lens. It's not written for specialists, but if the experienced folk who hang...
  7. rdeloe

    Controlling geometry with rear standard movements

    I have a puzzle for people who are old hands at view camera movements. I have noticed that things I could do with a 4x5 view camera using rear standard movements don't work with small digital sensors and the tools that are available. Two examples are controlling convergence of horizontal lines...
  8. rdeloe

    Arca-Swiss F-Universalis with GFX: revised review published

    Earlier in 2023 I put up a short post about the Arca-Swiss F-Universalis, and linked to a "working review": a PDF printout on my Google Drive site. I've had the chance to work the F-Universalis hard, and to use it in combination with the GFX 100S. The time seemed right to put up a proper review...
  9. rdeloe

    Lenses for Rolleiflex 6000 series -- operation question

    Can someone familiar with lenses for the Rolleiflex 6000 series (and later bodies) answer two questions? I realize that the camera body controls the shutter and the aperture. However, I'm not clear on these two points: 1. Is the shutter open when the lens is off the camera? From pictures I...
  10. rdeloe

    Shutter shock with GFX 100S on digital view cameras

    I'm using a GFX 100S on my Arca-Swiss F-Universalis with Rotafoot. The GFX 100S is prone to a bit of shutter shock with longer native lenses when using electronic front curtain (EF) shutter, and especially with mechanical shutter (MS). On my F-Universalis, shutter shock is much worse. MS is...
  11. rdeloe

    WTB: Really Right Stuff BC-18 microball tripod head

    Do you sometimes look in your photographic junk drawer and ask yourself, "What is that thing anyway? And why did I buy that?" If that thing is a Really Right Stuff BC-18 microball tripod head, I might be able to help you thin out the junk in your drawer! As long as it works well and has no...
  12. rdeloe

    SOLD: Toyo VX23D digital view camera bundle with optional reversible axis tilt modification for Fuji GFX 50R

    My Toyo VX23D digital view camera for GFX 50R needs a new home. I'm using an Arca-Swiss F-Universalis now so my lovely Toyo is languishing. This is a full-fledged view camera for digital. It was designed for medium format backs, but I set it up to run with a Fuji GFX 50R. I'm selling it as a...
  13. rdeloe

    An optical mystery from adapted Mamiya N 43mm f/4.5 L lens

    I have an optical mystery and would appreciate the thoughts of members who have more knowledge of optical design than I do. I adapt Mamiya 6 and 7 lenses (among others) for use on my digital view cameras with a Fuji GFX 50R. To use a Mamiya 6 or 7 lens this way, they have to be modified...
  14. rdeloe

    Mamiya N 65mm f/4 L -- a really nice lens

    In January of this year I started a thread about the Fuji GSW cameras because I was interested in harvesting a 65mm lens from one. Over the course of the thread, with help and advice from wonderful forum members, I realized that a better choice was the Mamiya N 65mm f/4 L, one of the lenses for...
  15. rdeloe

    Fuji/Fujica GSW cameras -- question

    I have an oddball request for someone who has one of the Fujica GSW680/690 cameras. These are the ones with the 65mm lens -- so not the GW... cameras that have the 90mm. Any generation GSW will do (e.g., GSW690, GSW690II, GSW690III, GSW680III). My request is this: can you measure the space...
  16. rdeloe

    Arca-Swiss F-Universalis working review

    August 1, 2023: Updated review and usage notes moved to new site: https://www.robdeloephotography.com/Pages/Arca-Swiss-F-Universalis-Review I posted this information at DPReview, but there might be more folks here who use this system, or would view it as an option, so I'm posting here as well...
  17. rdeloe

    The PC Super-Angulon 28mm f/2.8 by Schneider-Kreuznach (and Leica): a Deep Dive

    I couldn't find a lot of information about this lens when I was thinking about getting one. I'm glad I did because it exceeds my expectations. No, it's not an HR Digaron-S 28/4.5! But I can't use one of those on my outfit so this is the next best thing. For anyone else who is looking at this...
  18. rdeloe

    Toyo VX23D digital view camera outfit for Fuji GFX 50R – ready to shoot

    I can't believe this day has come, but I'm parting with my lovely Toyo VX23D. I'm selling the whole outfit. It's complete and ready to shoot if you have a GFX 50R and a suitable lens. It really does work best with a GFX 50R because of the tiny grip on that camera, which allows it to sit close...
  19. rdeloe

    H lens on GFX -- what happens when you power off?

    If you use the Fuji adapter for H lenses on GFX cameras, what happens when you set the lens to an aperture (say f/11), put the camera in bulb mode to open the shutter (if that works) and then power off. Does the aperture stay at f/11, and does the shutter stay open? Rob
  20. rdeloe

    Hasselblad HCD 28mm f/4

    Does the Hasselblad HCD 28mm f/4 use a floating lens optical design? Alas, it's not apparent to me from the lens block diagram in Hasselblad's technical data sheet.
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