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Posts for: Botherbro
May 26, 2022 21:09:53   #
I”ll save the 49 bucks. And more if you have a large aperture lens. Don’t ever try to take a picture of the moon with that uv filter on it. I’m usually using some other type of filter and the hood. I depend on the hood. And not dropping my rig in the first place. No uv filters and in 40 years or so never scratched a lens. They are selling you something you don’t need…
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Mar 18, 2022 11:16:07   #
I can’t believe we have this discussion periodically. Never jpeg, always RAW. You can always make a jpeg from a RAW…but the reverse is a bit tough. I used jpeg only once. Made an error that left a color cast. That cause too much wasted time in Photoshop. This big dummy likes having a way to improve images. Jpeg is very lossy and useless to me for astrophotography at night as well. I think no one processes those images in jpeg. Sometimes I believe the j in jpeg is for junk.. Clearly I’m opinionated, sorry..
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Aug 3, 2021 21:09:33   #
John7199 wrote:
I was associated with the MIT Juggling club in the early 1980,s. Doc Edgerton came to the club and asked us juggle in his lab at MIT, so he could take pictures.

He used a strobe (which he invented) that flashed continuously. I don't know how you could reproduce that.
John


Well lemme tell you this is like 40 years later. And the bullet thing chronometers are cheap these days 100 bucks or so. And with measurements and triggering the lights and camera from the chronometer takes about 5 bucks of electronic parts.
Not trying to take anything from Doc Edgerton but: The strobe, it only looked like it was continuous. And that is because your eyes have persistence with bright lights. Juggling is way not fast. Very easy to stop that motion. Especially nowadays man that was 40years ago. Electronics alone is way better not to mention camera technology. Some of these cameras you could bright light the jugglers and slow motion and or stop action. The equipment available then is no match for what you can get now.. The camera system in the SR71 moved film almost as fast as the plane moved.. That is pretty awesome but you aren’t buying those from amazon..my comments about the bullet picture just stated my opinion about the triggering method. Far easier to trigger on the bullet actually. Yes the chronograph is used to measure the velocity of bullets in flight. The bullet is fired between the measuring screens which are set at a known distance apart. Forget about the sound for triggering there is too much delay because most rifle rounds these days are yes supersonic lol but you still need to be able to measure the velocities if you are a marksman/handloader... just saying not hating. Botherbro
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Aug 3, 2021 13:45:46   #
Begging pardons but first off I would say that to try to trigger on the sound would be folly. One needs to trigger on the bullet by electro optical means. Then it is just precise measuring and timing. And I hope you don’t believe that it was accomplished on a single try. Yes hand loading of the round would help as you could reduce the bullet velocity. But optically triggering the flash as the bullet passes is the only way to fly. Sound is too slow folks. Yes you can use chrono screens to trigger your strobe. You don’t really think they used strobe lights triggered by sound to take pictures of nuclear weapon explosions do you? . Projectiles passing through objects are carefully measured and timed events and almost all of them are triggered using chronographs. Yes the device you use to measure velocity for fired weapons.. this is way not rocket science.. but methodology.
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Mar 13, 2019 14:30:30   #
Skip the Uv filter, use the hood to protect the lens, you will use a optical polarizer more, save money. Buy the largest filters and use adaptor rings to fit to the smaller diameter lenses. You might take that 65 bucks for the Uv filter and buy a rectangular filter holder... just saying
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Mar 13, 2019 14:22:15   #
Yes, stay well clear of any critter that has young nearby, especially large ones with teeth, hooves, or antlers, claws can be real painful too. But do remember that the mosquito kills more humans than anything else on the planet... take lots of repellent and screening your hat can help!
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Mar 13, 2019 11:33:30   #
Hmmm I would take a 17-40mm, either 70-200 or 100-400mm and perhaps something a bit wider. But I hope you are going in late June. I did the inner passage in early June. Did some fishing, saw birds, no bears I was told they were still hibernating... But always in bear country, bear spray, and be prepared to move! Let the bear have the fish! And make noise when you move around.
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May 26, 2017 11:22:34   #
Well I loved the inner passage in Alaska. However if you want to see wildlife make your trip in July. You will see more and the bears are awake. Above all have fun, take lots of "film" and charge all batteries on board ship every night.
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Dec 8, 2016 00:13:15   #
Takes talent and patience to get those results. Great job!
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Dec 8, 2016 00:05:40   #
106"= 8.33'.
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Dec 7, 2016 23:51:53   #
Hmm I have the same lens in the canon mount. This one is actually a DX which means it is full frame. Yes, I've used this one on my 1DX full frame and it's a great lens. Auto focus but no jiggle comp, fast 2.8 aperatures, you should have tried that lens more, just saying..
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