New answers tagged

1

The following is all guesswork, and should be a comment on the question rather than an answer, if it weren't so long. First off, motion blur could be the reason, but the uniform dizziness around the moon's border suggests to me that it's not the case here. I do see a little bit of chromatic aberration on the right side of the moon. Are we looking at the full ...


5

Product photography of jewelry is not optically tricky. The kit lens you already have will do nicely. No need to rush out and buy a 50mm. That said, a 50mm prime with a large aperture, say f/1.4 will deliver shallow depth-of-field when set to maximum or near maximum (wide-open). The real trick will be cutting the glare radiating from polished metal and ...


1

Found the answer mentioning leaving the lens exposed to UVs as a way to kill fungii in your lens in the quick Google answers. Unfortunately, glass stops UVC, (the killer ones) making this option not effective. See UV filters for pools for instance, the bulb is contained in a quartz sleeve as a glass one would not permit UVs to do their sterilizing work. For ...


0

My camera bag similarily fell from 15 cm and the AF was no longer working. This was due to the lens being out of position due to the fall. Fortunately, I found a tutorial that showed how to get it back inplace, just like a chiropractor :) Hope others can save their lens! See the link to the video below: https://www.youtube.com/watch?v=_4K1Ge5COW8


-2

Im not sure if that will work in your case, but the following tutorial helped me solving my Canon bent lens. Sharing as it might help others! https://www.youtube.com/watch?v=_4K1Ge5COW8 Good luck!


4

There is no calculation required. If you are happy with 50mm now, just buy a 50mm "fixed' lens, as 50mm is always 50mm regardless of what the sensor size is. Yes, the field of view changes with different sensor sizes, but you are not changing the sensor, so 50mm will equal 32 degrees FOV with any 50mm lens you buy. Due to minor differences in stated ...


3

50mm is 50mm. ANY 50mm lens, either made for APS-C cameras or FF cameras, will give you the same 50mm angle of view on the same 1.5X APS-C camera. This will be the same angle of view that one would get using a 75mm lens on a FF sensor. You only need to get a 75mm lens if you're also going to change to a FF camera and want the same angle of view that you get ...


1

According to this list published by Graflex, there are two different Sironar N 240mm F5.6 lenses. They cast image circles of 337mm and 350mm, respectively. The nominal negative size for 4x5 is 102x107mm with a diagonal of ≈148mm, so you won't have any issues with image circle size. Just be sure your lens board can take a lens that large in diameter, as some ...


3

You need to turn the lens round ;) SWM Ø58 is Silent Wave Motor, 58mm filter thread size. (some of these reverse descriptions are far more complex - eg DX SWM VR ED IF Aspherical… etc etc.) In either case the lens's full 'title' is on the other face. In this case, SWM Ø58… …is revealed as an AF-S NIKKOR 50mm 1:1.4G That doesn't necessarily mean yours is ...


2

As long as you have a lens board that will take the shutter and a bellows that will allow extension to your closes planned focusing distance, you're good to go. You're very unlikely to run into any problems with movements with that lens; it has enough coverage that you'd be tying your bellows in knots before you run onto issues.


6

Well, it's more of 200-ish mm being pretty much 200-ish mm at the best of times, unless you're testing two copies of the same lens design. The stated focal length is usually a nominal value, and only a few companies will tell you what the actual focal length of a lens is for general photography. (Hasselblad is notable in that regard; there's a "...


2

The threads on the Canon PowerShot SX50 HS are non-standard and designed to only take the Canon Filter Adapter FA-DC67A, which attaches to the threads on the SX50 HS and then provides standard 67mm threads for whatever 67mm filter one wishes to use. There are also third party versions of the FA-DC67A that do the same thing: allow 67mm filters to be attached ...


1

As far as official support, page 35 of the SX50 HS manual states that 67mm filters will work with the camera in conjunction with the FA-DC67A filter adapter. I would assume this adapter only works with 67mm filters. It appears that 3rd party equivalents of this adapter that state 67mm also only work with 67mm filters. The 3rd party adapters that allow 58mm ...


4

I am curious to how difficult it is to manual focus at farther focal lengths such as 200-300mm especially on my d3200. So in the end should I opt for a 55-200 AF with VR or challenge my skills and shoot manually with the sigma? Manual focus is an acquired skill. It's one that takes lots of practice. Ultimately some folks find it easier or harder to do than ...


1

I have both the 35-70 and the 24-70. In there shared focal lengths they are comparable. There is quite a bit of missing range from 24-35 though.


0

I use white rice and after you can eat it. I set the camera on bag of rice and I either set the camera to (selfie) you know a 2 sec delay OR I use a wireless remote. ALL of this sometimes works I haven't put sandbag (or rice) on tripods hook but I'm going to try that!


1

I will make a bunch of assumptions along the way along the lines of my comment. If I guess wrong, I hope you can adapt the calculation. Let us assume the camera is pivoted to the left so the 4m you want to see is equally split across the centerline of the frame. I will also assume the 4m is across the middle of the frame vertically. If the height of the ...


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