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10 votes

How can I make a focus ring More stiff?

I use wide silicone rubber wrist bands and adjust it so that the edge overlays the adjusting ring to give the desired amount of resistance. You can buy them marketed specifically for this use (i.e. ...
Steven Kersting's user avatar
8 votes

How can I make a focus ring More stiff?

One simple solution is to use rubber band (these used for hair) and put one "end" under the lens hood, another "end" below the the focus ring. And with appropriate stretching you ...
Romeo Ninov's user avatar
  • 12.2k
4 votes

Is there an adapter to allow a camera to control focus or aperture of a manual focus & aperture lens?

No, there is no such adapter. The Rokinon lens a manual-focus, manual-aperture lens. It does not have a built-in focus motor, nor can it interface with a focus motor in a camera body that might have ...
scottbb's user avatar
  • 32.9k
4 votes

Is the Tamron 17-50mm f/2.8 a wide angle lens?

You are asking two questions: Is the Tamron 17-50mm f/2.8 a wide angle lens? Does a specific wide angle lens have a benefit over the Tamron 17-50mm f/2.8? I have two answers: The Tamron 17-50mm f/2....
dpollitt's user avatar
  • 46.6k
4 votes
Accepted

What is the difference between the Rokinon 16mm f2 or Rokinon 16mm T2.2 for Canon?

Rokinon often produce the same lens twice (ex: two 16mm, two 85mm) — one optimised for stills, the other for videography. They generally have the same quality optically (good to great), are generally ...
GhislainCote's user avatar
4 votes

Rokinon 135 mm lens behaving strangely with Nikon D5000

You won't see the aperture change until a picture is taken. Because the camera uses through-the-lens metering, the camera keeps the aperture at a wide aperture setting (usually the widest possible). ...
scottbb's user avatar
  • 32.9k
4 votes
Accepted

Rokinon 135 mm lens behaving strangely with Nikon D5000

I'm only seeing about 0.5 stop difference between the f/2 and f/22 test images; there should be over 3 stops difference. My best guess is that the aperture lever on the camera body is bent or jammed; ...
Steven Kersting's user avatar
3 votes
Accepted

Would you consider this lens (Samyang 8mm CS II) defective?

After returning that lens and buying the new one, I can conclude with confidence that the first lens was definitely defective. This new lens is not perfect either, but it performs much better. You can ...
Qeeet's user avatar
  • 173
3 votes

Why does my Rokinon lens have no aperture control on my screen?

Samyang/Rokinon lenses are "manual only". They do not perform any electronic communication with the body, so the camera cannot control the aperture of the lens. You must use the aperture ring on the ...
inkista's user avatar
  • 52.5k
3 votes

Can we use a cine lens for still photography also.

Assuming it's in the right mount for your camera (or adaptable), you certainly can. However, be aware that: Cine lenses are going to be manual focus only. Maybe not a problem, maybe a deal breaker. (...
Philip Kendall's user avatar
2 votes
Accepted

With Autopano Giga, should I multiply the focal length by the crop factor?

According to their documentation, use 8mm, the actual focal length of the lens. Autopano uses the camera model information from the camera EXIF to determine your crop factor, and will calculate the ...
inkista's user avatar
  • 52.5k
2 votes
Accepted

Nikon lens with an adapter vs Canon lens on a Canon body - image quality difference?

It will depend a lot on the quality of the adapter you get, but I'd say that it would probably work well enough that if it gives you a significant cost-savings, and you don't mind the possible image ...
inkista's user avatar
  • 52.5k
2 votes

Catadioptric lens: equivalent focal length and focus at infinity

This review says that "on Fujifilm X and Sony E-mount cameras [the equivalent focal length] is 450mm." What does this mean? It means the angle of view obtained with a smaller imaging area (sensor or ...
Michael C's user avatar
  • 175k
2 votes

Ultra-wide manual lens & concert photography

Scale focus. Why I use a manual wide really, scale focus works when conditions are too fast/rough for autofocus to be practical. Check the accuracy of your scale beforehand! Both my Rokinon 14 and my ...
Roger Krueger's user avatar
2 votes

Are the artifacts I am seeing with my Samyang 24mm f/1.4 typical?

This lens is half the price of Sigma's 24mm f/1.4, a third the price of Canon's and a quarter the price of Nikon's. The artifacts you are seeing in sub-optimal conditions with the lens wide open are ...
mattdm's user avatar
  • 143k
2 votes

Rokinon 135 mm lens behaving strangely with Nikon D5000

A long time ago, when photographers measured the light and figured out the aperture and shutter speed required, the aperture on the lens would be (physically) stopped down as necessary, and the ...
osullic's user avatar
  • 12.6k
1 vote

Nikon D7000 Interval timer shooting not available for manual focus lenses

You can't be in live-view to use the interval timer. Take out of live-view set up interval timer options. If you need live-view to frame your shots (maybe using a tripod and have eye-piece cover on), ...
AH Duncan's user avatar
1 vote
Accepted

Which one is better for landscape on a Canon crop-sensor body: Rokinon 14mm/2.8 or Canon 10-18?

It's up to you. Everybody's priorities and personal tastes in framing are different. Which lens is going to be the better fit for you depends a lot on what/how you plan to shoot (handheld or on a ...
inkista's user avatar
  • 52.5k
1 vote
Accepted

Ultra-wide manual lens & concert photography

I very occasionally use a 17-40mm (autofocus) lens with a FF camera at concerts, but the wide end is usually for turning around and getting shots of the crowd just on the other side of the barrier ...
Michael C's user avatar
  • 175k
1 vote
Accepted

Transmission, Aperture, and Focal Length in Low Light Situations

Brightness in terms of exposure is always about light per unit area. If you are using both lenses on an APS-C camera the larger size of the image circle projected by the 14mm lens is totally ...
Michael C's user avatar
  • 175k
1 vote
Accepted

Catadioptric lens: equivalent focal length and focus at infinity

As you know, the 35mm size film camera has been the one at the top of the photographic food chain for almost 100 years. Because of its popularity, most photographers are highly familiar with the way ...
Alan Marcus's user avatar
  • 39.3k
1 vote

What is the difference between the Rokinon 16mm f2 or Rokinon 16mm T2.2 for Canon?

First off, please note that there are two different Rokinon 16mm T2.2 lenses in the Canon EF mount. One, the CV16M-C, is a discontinued older version (but still available as "new" from some retailers) ...
Michael C's user avatar
  • 175k
1 vote

Why does my Rokinon 16mm f/2 lens cause underexposure?

If I'm not wrong it's a totally manual lens, so what the camera meter it's exactly what you'll shoot. And in this sense no, you shouldn't have this problem at all. But given that, again, is totally ...
motoDrizzt's user avatar
1 vote

What is this vignette coming from in my HDR compiled photo?

It's definitely digitally applied, check your settings effects panel.
Flo's user avatar
  • 163
1 vote

Are the artifacts I am seeing with my Samyang 24mm f/1.4 typical?

A 24mm f/1.4 lens for typical DSLR registration distances (the distance between the sensor and the lens mounting flange) is very difficult to design. Even much more expensive lenses in this category ...
Michael C's user avatar
  • 175k
1 vote

Is the Tamron 17-50mm f/2.8 a wide angle lens?

Whether a lens is explicitly marked as a wide-angle lens or not is kind of irrelevant. What is important in terms of 'angle of view' is the focal length (or focal range in the case of a zoom lens). ...
osullic's user avatar
  • 12.6k
1 vote

Is the Tamron 17-50mm f/2.8 a wide angle lens?

The Tamron SP 17-50mm f/2.8 Di II is an APS-C only lens. That means it projects an image circle large enough for APS-C sensors that are roughly 24 x 16mm (Nikon. Petax) or just a tad smaller in the ...
Michael C's user avatar
  • 175k

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