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The Everyday Sling might just be the perfect pack for not carrying too much gear, combining comfort with Peak Design's signature modern style.
After playing the what focuses best game with my gear, I pondered this : All the mechanical linkages in screw drives (body motor, gears, couplings, lens couplings, lens gears, etc.) have their individual tolerances when made. These have to add up to focusing inaccuracy. Electrically coupled lenses have less mechanical play, so wouldn't they have more accurate focusing ability ? When the camera sensor shows you're in focus how close is it really ? And, the hunting that some lenses love to do, is that due to loose tolerances ?
It doesn't have to add up to any focusing inaccuracy at all. Imagine a bicycle with a loose chain and the reverse-pedalling brake. I don't know what is the proper term for it, but with the "simple" bikes you do not have a "gear changer" but you pedal forward, you go forward. You stop pedalling and you go forward by inertia. You pedal backward and you brake the bike. Now...
The chain is loose. In perfectly tight chain you pedal forward and the wheel moves immediately. Thats sportsmen's bikes, like for bike football. No room for tolerances, no room for loose chain. On the other hand, an old lady in a village doesn't have top grade bike. So, with a loose chain you pedal a little and only the chain tightens, the wheel doesn't move, and when the chain is fully tightened, the wheel starts to move. Thus, motor, gears and coupling tolerances. You want to brake and the loose chain has to tighten up the other direction, so you pedal backwards and for a short while nothing happens but the chain tightens in the other direction. But after that the brake engages. Thus, focusing backwards and forwards, hunting there and back, looking for ideal focus. The tolerances just make the motor move a bit more than necessary until all the tolerances are tightened. And the motor only moves until the focusing circuit tells it to stop. So, in fact after the fist move, when the motor only tightens the tolerances, the focusing circuit still tells it to move since there is no change in detected contrast.
With my well set screw driven lenses I never had problem to focus precisely, provided the contrast was good and the light was good enough for the given aperture.
When the Fujifilm X-T2 arrived, it was more than just a modest upgrade to the already impressive X-T1. While the new X-T3 hasn't changed the overall design of the camera, this model is way more than an upgrade; rather, it's a quantum leap.
The Movie Maker is a compact, motorized slider designed for phones, action cams and small mirrorless cameras. We think it's a fun little kit and a good value proposition for the cost, provided you can work around a few of its weak points.
Nikon's Z7 is the first camera to use the all-new Z-mount, the company's first new full-frame mount since 1959. We've put together our first impressions based on quality shooting time with a pre-production camera - check out what we've found.
What's the best camera for a parent? The best cameras for shooting kids and family must have fast autofocus, good low-light image quality and great video. In this buying guide we've rounded-up several great cameras for parents, and recommended the best.
What's the best camera for shooting landscapes? High resolution, weather-sealed bodies and wide dynamic range are all important. In this buying guide we've rounded-up several great cameras for shooting landscapes, and recommended the best.
What’s the best camera costing over $2000? The best high-end camera costing more than $2000 should have plenty of resolution, exceptional build quality, good 4K video capture and top-notch autofocus for advanced and professional users. In this buying guide we’ve rounded up all the current interchangeable lens cameras costing over $2000 and recommended the best.
|The Lone Photographer by ed rader|
from My Best Photo of the Week
|Neighbourhood Watch by Stevie Boy Blue|
from Zoo trip ~ Cute...