Tag Archives: image stabilization

Equipment

Canon 24-70mm f/2.8 L II vs. 24-70mm f/4L IS vs. 24-105mm f/4 L IS (and more?)

51 Comments

Anyone who spends any time in photography forums discussing Canon lenses has seen this topic come up regularly: the comparisons between the 24-70 and 24-105mm L zoom options. If you follow this subject you are familiar with posts asking which of these lenses is “best” or claiming that one or another is great and the others are poor, and with the ensuing debates. Rather than re-writing what I have to say about this every time the subject comes up, I thought I would post once here and then link back to this article.

(Update 1/4/13: Things have changed in significant ways since I first posted this review back in 2011 – primarily with the introduction of two newer Canon 24-70mm L zooms. I have made a few updates to this post to reflect those changes. I have now had the opportunity to use the updated Canon EF 24-70mm f/2.8L II lens. It is also a very fine lens and a great performer. In addition, there is now a Canon EF 24-70mm f/4.0L IS USM lens as well, and the Canon 24-105mm f/4L F/4.0L IS lens is still available. Canon shooters have an over-abundance of good lenses that cover the 24mm to whatever-mm focal length range at this point. All three of these current lenses are excellent options and the functional differences among them now are the primary basis for selecting one over the others. If you need f/2.8 and are OK with a smaller focal length range and not having IS, the 24-70mm f/2.8 could well be your choice. If you can get along without f/2.8, are OK with the smaller focal length range, would like IS, can make use of semi-macro capabilities and want a smaller lens, then the 24-70mm f/4 IS lens can be a great option. If you don’t need f/2.8,  but do value image stabilization and a significantly larger focal length range, the 24-105 is a wonderful choice. )

(Update 1/8/15: And now there is yet another lens in this general category from Canon, the EF 24-105mm f/3.5-5.6 IS STM Lens. I have incorporated some information about this option below.)

Continue reading Canon 24-70mm f/2.8 L II vs. 24-70mm f/4L IS vs. 24-105mm f/4 L IS (and more?) →

Equipment, Technique

Tripods and Shooting in High Winds

8 Comments

I recently saw – and replied to – a question posted in a photography forum regarding tripods and shooting in high winds. The poster wrote something very similar to the following:

I realized that many shots from a recent trip are blurry because of wind shaking the tripod. Even hanging 10lb weight did not help. So now, I am looking for a new tripod that won’t be affected by wind.

What the writer has discovered is that no tripod is immune to strong winds, especially if you make long exposures and/or use long focal length lenses. Even if you had an absolutely rock-solid tripod, in a 40 mph wind your camera and lens will vibrate enough to create a slightly less sharp image.

So, what to do? You could get the heaviest tripod you can find and weight it down with bags of rocks and what not. But then you are stuck hauling around the dead weight of this tripod the other 95% of the time when you don’t need it.  Yes, get a good solid tripod and a good head with good camera brackets, but other things can help in high winds and, in fact, may be necessary even with the best tripod:

  • Use a shorter focal length if possible.
  • Use a higher shutter speed, even at the expense of a higher ISO, larger aperture, and accept the slightly increased noise or slight loss of DOF.
  • Consider using image-stabilization (IS) even with the camera on the tripod in extreme conditions.
  • Don’t extend the tripod legs all the way – if possible shoot from down low to the ground with the legs retracted.
  • try to brace the tripod against something – rocks, your legs, anything that will dampen vibrations a bit.
  • Try to use natural wind screens when you set up – sometimes being in the lee of a wall or tree or rock can diminish the wind enough to make a difference.
  • Time your shots for moments of less wind.
  • If your exposure times are not extremely long, gently resting a hand on the lens or camera body can dampen the wind-caused vibrations.
  • Rather than relying on a single exposure, make many redundant exposures – some will likely be less affected by the wind than others.
  • If you have a strap attached to your camera, take steps to make sure it doesn’t flap. Wrapping it around the tripod may be sufficient.
  • If conditions permit, consider removing your lens hood.

I recall once shooting on top of a bluff at the far reaches of Point Reyes, normally a very windy place and on this day windy enough to almost be scary. But the light was beautiful and I wanted to make photographs from the edge of the bluff. I ended up retracting the tripod legs so that the camera would be lower to the ground, sitting with the tripod braced between my legs, using IS, leaving a hand on the camera to dampen vibrations, raising the shutter speed, and making many exposures. In the end, a good percentage of the images were adversely affected by the wind… but among them were some good ones that were sharp.

Point Reyes Shoreline

G Dan Mitchell Photography | Twitter | Friendfeed | Facebook | Facebook Fan Page | Email

Equipment, Ideas, Technique

Wide Angle Lenses and Image Stabilization

Leave a comment

I often hear people claim that image-stabilization is only of value on normal to long focal length lenses, and is not useful on wide angle and ultra wide angle lenses.

The photograph posted earlier today was shot handheld on a full frame DSLR at 1/25 second at ISO 800 and 32mm. (32mm on full frame is equivalent to using a 20mm focal length on a 1.6x cropped sensor body.)

I had just finished a session of tripod-based landscape shooting on the summit of this dome, had packed up, and was heading down when the lone hiker crossed the ridgeline below me just as some lovely post-sunset light gently illuminated the landscape. Having no time to set up a tripod – hiker and light would have been gone by then – I dropped everything, pulled the camera with image-stabilized 24-105mm lens from the pack, made some quick seat-of-the-pants exposure calculations, and got of three quick frames before the scene was gone. Without IS I simply would not have gotten a usable version of this photograph – a photograph that has since been licensed for use in a print journal.

Even as one who often shoots from a tripod – and almost always carries one – I have found the notion that IS has no value at shorter focal lengths to be a myth not born out in actual practice.