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By eatstoomuchjam · Posted
I should clarify - the dust is under the outside layer of protective glass in front of the sensor/ND assembly. It's on one of the internal ND filters. Without some disassembly, it can't be reached with a brush. I'm more hoping that one of the air intakes for the camera's fan has some path that goes there and that blasting in air from the rocket blower will dislodge it. 😄 I am somewhere between those people and fastidious. While on set, it's not usually a reasonable investment of time to move to a sheltered area to swap lenses. I don't walk around doing other things while the lens is off, but it often takes 15-60 seconds. Usually the rocket blower is plenty to handle any dust that sneaks in, no biggie. But the fact that it's under the external protective glass is why I can't figure out how someone got it in there. Worst case, I need to decide whether to send it to CPS for what should be a pretty easy fix for them - or I just sent it back to MPB within the returns window. -
Thanks! Partly I feel like I've moved past shooting the obvious stuff and started focusing on what I'm looking for, but also there's a bias in what frames I choose to post online too as wider more normal shots often look really cool when moving but as soon as you look at just one frame as a still image all the movement is gone and the depth collapses and the frame just looks like a chaotic mess. This happens even if you've been looking at it in motion and so your brain already has a 3D mental model of what it's looking at - you hit stop and it just collapses. This shot is a moderate example and looks like a very busy but confusing still image (taken right next to the Shibuya train station): When watching the video clip the train stands out most because it's moving quickly, the pedestrians on the bottom right are moving a lot and the ones in the distance and to the left are moving less but still moving, and the side of the rail bridge and buildings in the rear are completely still. Seeing these things your brain instantly builds a sense of depth, which combined with the rear of the signs then means you recognise the cars as being several lanes of traffic despite it being almost completely stationary, and so in only a fraction of a second the frame becomes about six clearly-defined areas, rather than the almost indiscernible chaos that the still frame is. The process of pulling nice looking frame grabs from my footage is a fascinating exercise in how different still images are from moving images. They really are a completely different thing, and I shoot for motion and chaos and layers, so in a way I'm posting my least interesting shots. I agree. I follow someone on YT shooting with the same Takumar 50mm F1.4 on FF and they shot a video of using it wide open in daylight and it just didn't look right. There are strong anatomical reasons for this as in lower light our pupils dilate giving our eyes a shallower DOF, we can often get flares etc from strong light sources (which will be on our periphery because we're probably not looking at them directly), and in very low light we even start relying on the rods in our eyes (which are far less detailed) instead of the cones which we usually use. I have a trip later on in the year where I will probably only be shooting during the day and won't have many/any chances to go off shooting at night, so I'm forcing myself to get excited about daytime images again, and in thinking about equipment I'm not sure that shooting with larger apertures / fast lenses makes visual sense so I might not even take any, instead just using my usual 14-140mm zoom lens. -
Nice. Good idea about giving it a solid clean out with rocket blower etc. Mine tends to leak air quite a bit from the one-way valve, but if you put a thumb over it then it turbo boosts the air to give a much more solid blast. It'd be good to know if there's dust all through it, and if you end up dislodging a bunch, at least you can include that in any cleaning service you arrange. I have also found that fan brushes for painting are really nice for dislodging the dust that is just attached enough to not move from air alone, but they tend to be gentle enough that they're not picking up dust and then pressing it onto the surface as you move it around. I don't know how far I'd go if something was on my sensor - I'm mostly blowing dust off my lenses or off the outside of the gear after a trip. Speaking of brushes, the makeup section in most shops will often have very soft brushes with a short handle that fit really well into the case/container you're keeping your lenses. In terms of how it got there, I've noticed a minority of people seem to be perfectly happy taking their time and doing other things while the camera has no lens or body-cap attached. Personally when I'm changing lenses I do it in a sheltered area, taking the rear lens cap off the next lens, then swapping the lenses as quickly as possible (while still being calm and controlled) and then putting the cap onto the previous lens. If I'm at home and feeling fastidious I blow the rear element of the next lens (and rear lens cap) before fitting it, then blow the rear of the previous one before putting the rear cap on, in an effort to not let dust hitchhike its way into the camera.
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By Aussie Ash · Posted
Thanks for that I have changed "adapted" to converted. -
By eatstoomuchjam · Posted
That's a conversion kit, not an adapter. The FD 85mm f/1.2L, which I have, and maybe some other FD lenses, are non-trivial to convert. With the 85, you need to get a special adapter and remove the rear element. What's that have to do with the discussion?
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