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GMPhotography
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Re: Are the A7R5 improvements worth it to you?


jhapeman wrote:
j4nu wrote:
chiron wrote:
j4nu wrote:
jhapeman wrote:
GMPhotography wrote:
You all let a Troll get to you.

It’s a dead issue and a limitation that most of us can get around. I’m done talking about it except I’d like to figure out LED regardless of shutter


Isn't the only solution the variable shutter rate? That's how I got around it on the A7RV here in my office--I installed LED lights a few years ago to replace the fluorescents.


Anti-flicker for those regular (50/60 or 100/120 hz) leds...


Isn't anti-flicker for fluorescent lights and variable shutter for LEDs? That is how the Help Guide for the A1 makes it sound.

This whole issue cries out for a thorough "dummies-style" explanation from someone who is an engineer, is a photographer, and who can communicate clearly to non-experts and non-engineers. Spencer Cox over at photographylife.com did a very nice job on the differences among types of shutters, with pros and cons for each case. Something like that on LEDs, other modern forms of lighting, and sensors and shutter types would be great to have. Something that included the differences among residential and office LEDs, stage and stadium LEDs, etc.

LEDs are clearly where lighting is going. My whole house is exclusively LEDs at this point except for two spots in one bathroom, under-counter lights in the kitchen, and a couple of hard-to-access over-counter spotlights in the kitchen. And they are the next to go.


It's the flicker rate that matters, not the lightning type. We're seeing most issues with LEDs because they are capable of different flicker rates and often use some kind of a "controller" to steer them.
Anti-flicker "fixes" only 50/60 and 100/120 hz (which corresponds to typical lightning on the grid, not run through a dedicated controller) according to A1 help guide...


Exactly this, most modern LEDs are not tied to the frequency of the electrical system, which gives them many advantages but it does mean you have to use the variable shutter speed to tune into a place where you won't get banding. Doesn't matter what digital camera you are using. AFAIK, there's also no "easy" setting for it, as the rate can vary by the light, so you have to figure it out.


This is where on the A7RV they put in Variable shutter scan so you can scan the scene under those lights. I need the help guide here to explain how it works



Jan 16, 2023 at 05:47 PM





  Previous versions of GMPhotography's message #16145974 « Are the A7R5 improvements worth it to you? »