Posts tonen met het label telezoom. Alle posts tonen
Posts tonen met het label telezoom. Alle posts tonen

zaterdag 6 augustus 2011

Zooming in on the small guys

Some creatures are harder for me to photograph than others. Specially the small and quick moving guys such as bumble bees pose a challenge for both me and my lens/camera's autofocus. Generally I tend to use my Canon 70-300 lens for this, nowadays in combination with a canon speedlite 430EX ii to make sure that there are some details still visible in the bumble bees' black hairs. Some people that read reviews about the 70-300 lens might now be quite surprised to hear that i've used this lens (succesfully!) for shooting bumble bees in flight. The lens's autofocus has been graded terrible, atrocious, etc in reviews on the internet. In my opinion the AF is slow,  but workable and accurate. Its AF speed is sufficient for me, specially once I got used to working with this lens. This doesn't mean the AF can't use an upgrade in the future but I don't expect Canon to do this: the image quality of this lens rivals the L series 70-200 f4 L (IS) USM lens. Therefore upgrading the AF of the 70-300 IS USM would make this lens perform on par with the more expensive L lens, leaving only (to me) minor reasons to pay twice as much money for  the L series counterpart: (i) internal focussing, (ii) non-rotating front element, (iii) build quality and weather sealing, (iv) constant aparture (f/4) throughout zoom range. To me personally that ain't worth it by a long shot, but everyone has to decide for himself. 

Ok, after this lengthy introduction about the lens let's get to the pictures! The first picture is taken without the speedlight strobe in bright sunlight conditions. You'd actually need quite some light to freeze the motion of the flying bumble bees as i'd prefer to take the pictures at 200-300mm focal length which gives me a minimum f/4.5-5.6 aparture. I sometimes prefer to use an even higher aparture to make sure that the flying bumble bee stays within focus considering the shallow depth of field. I spend quite a bit of time to take a picture of a bumble bee flying towards a flower. One of the tricks that made it easier was to track the bumble bee with the camera and then predict what flower it would go to, focus on the flower, and take the shot as it came close enough. 

[Canon EOS 450D, Canon 70-300 f/4-5.6 IS USM, 200mm zoom, f/4.5, ISO 800, 1/2000 sec]

The following two pictures of bumble bees were again taken with the 70-300 lens but this time at a fixed 1/200 sync speed with my Canon speedlight strobe. Although i was pretty happy with the picture above (without strobe) I found that the blacks of the bumble bee tend to fill, so i tried to overcome this using the external strobe.

[Canon EOS 450D, Canon 70-300 f/4-5.6 IS USM, Canon speedlight 430EX ii, 300mm zoom, f/5.6, ISO 400, 1/200 sec]

[Canon EOS 450D, Canon 70-300 f/4-5.6 IS USM, Canon speedlight 430EX ii, 300mm zoom, f/5.6, ISO 400, 1/200 sec]

I was really happy with both shots, specially the fill-in flash effect of the speedlight strobe. These shots would have been impossible without the flash aid given the amount of available light and backlighting which would have resulted in overexposed background or underexposed foreground. The reason why I used the 70-300 lens sofar was to blur the background. But now that I have the tamron 17-50 f/2.8 i will definately try that lens for shooting the bumble bees. Below is one final picture taken with the Canon 18-55 1:3.5-5.6 IS II kit lens with a photoshop edit. Thanks to all bumble bees for the cooperation!

[Canon EOS 450D, Canon 18-55 1:3.5-5.6 IS ii, 55mm zoom, f/9, ISO-200, 1/125 sec, photoshop]

cheers!

Hans

zondag 31 juli 2011

Short visit to the city park "De Goffert" in Nijmegen

31-07-2011

As we happen te live across the street of the Nijmegen city park i'd wandered into the park to test my new Tamron lens. It was very crowded due to the visitors day at the local soccer team stadium (located in the park). To my surprise i noticed two juvenile tree falcons in the fields near an old farm beside the stadium. After quickly switching the Tamron lens for my 70-300 Canon lens i managed to take a few shots of one of these beautiful birds. The first shot was taken while "sneaking" up on the bird after the lens switch. Although it clearly noticed me it was kind enough to give me a small chance on taking the picture below.

[juvenile tree falcon (Boomvalk in Dutch): Canon EOS 450D, Canon 70-300 f4-5.6 IS USM, ISO 400,  300mm, f/5.6, 1/350 sec]

After it noticed me it obviously flew away to a tree a bit further up ahead. It actually stayed there for quite a while allowing me to take a few more shots as it was screaming to its littermate.



[Canon EOS 450D, Canon 70-300 f4-5.6 IS USM, ISO 400,  300mm, f/5.6, 1/350 sec]

After a while it decided to fly away to a spot out of sight. As it flew away it was quite far away from my lens so I couldn't get the golden shot but at least it enabled me to take a picture of the bird in flight.

[Canon EOS 450D, Canon 70-300 f4-5.6 IS USM, ISO 400,  280mm, f/6.7, 1/1000 sec]

After that i more or less lost track of both birds although they were clearly somewhere in the area. So I removed the 70-300 lens and switched back to the Tamron 17-50 to take some more test pictures. Somewhat further in the park i actually found a site where one of these birds might enjoyed its lunch as a feather left by the predator marked the scene.

[Canon EOS 450D, Tamron 17 - 50 / 2,8 XR DI II VC LD ASP, ISO 400,  50mm, f/5.6, 1/45 sec]

I've managed to take some more shots in the park with the Tamron lens which i will include in a short review in the near future. So far the lens performance is actually above my expectations in terms of image quality, response and feel. But more about that later!