ian s. forsyth

November 24, 2014

The tripod collar from the sigma 300 2.8 and sigma 70-200 2.8 II ( same collar ) can be used on the Nikon 70-200 F4. The collar is slightly larger than the Nikon lens but with some single sided rubber tape to makeup the space it works fine.

May 26, 2014

<img src="http://isfphotography.smugmug.com/Other/2014/i-QCsdH5j/0/700x700/2011spK7D7472%20sm-700x700.jpg" alt="" width="700" height="525" />Moth photographed on a old stump

May 25, 2014

<img src="http://isfphotography.smugmug.com/Other/2014/i-HZXjgbj/2/700x700/2011spK7D5593sm-700x700.jpg" alt="" width="700" height="467" /> The Den A wild coyote coming home to feed the clan

January 11, 2014

<img src="http://isfphotography.smugmug.com/Other/full/i-qS9G8Zw/0/XL/013_5820cr-XL.jpg" alt="" width="502" height="768" />Seldom do I have an Osprey fly directly toward me. This set of photos was all taken in consecutive order as the juvenile Osprey came towards the camera. I was caught off guard photographing along the shore and I would have selected more DOF and shutter speed but I was kind of in a hurry.

D800 200-400 vrII and 1.7 tc

November 23, 2013

I find that the 200-400 has a focus shift as you stop down the lens, and once you go out past 50m this shift seems to be greater. I know with mine I have to adjust for this shift, I use a correction depending on the F stop and the distance I am going to use it. When a tc is used this shift seems to amplified even more so to focus at some distance one has to adjust for this also.

November 22, 2013

Playing around with the D800 and the 200-400mm F4 VrII and the 1.7 conv <a href="http://isfphotography.smugmug.com/Other/2012/i-NmmxszK/0/X2/013_0496%20sm-X2.jpg"><img src="http://isfphotography.smugmug.com/Other/2012/i-NmmxszK/0/X2/013_0496%20sm-X2.jpg" alt="" width="1280" height="854" /></a>

November 2, 2013

I would much rather be shooting with my DA*200mm f/2.8 on a well-built but compact Pentax DSLR than having to haul a huge 300mm f/2.8 lens on a larger FF body. I would likewise rather be using my relatively lightweight DA* 50-135mm f/2.8 than a 70-200mm f/2.8 on a FF body.

</blockquote>

If you wanted to replace your DA*200mm F 2.8 on a cropped body a FF could replace that with a 300 F/4 and the same with your 50-135 with a 70-200 F/4 with very close specs in weight these both would give you the same DOF & FOV control as there cropped body counterparts. If you wanted to replace a FF 300 2.8 in a cropped body you would need something like 200 F/1.9 the closest you could find is a 200 F/2 that is the same weight as the 300 F/2.8

November 1, 2013

After shooting FF for over a year it’s a hard sell to go back to using a cropped body, the only time I have used a cropped body was just for the snap shots. Using FF I mainly use 24-85 F3.5-4.5, 300 2.8 or 400 F4 and replacing them with cropped body and lenses with the same FOV and DOF control I really gain nothing in weight reduction or cost other than the camera body its self. While the article is great for generating traffic to their sight, they never really tested the performance between the two formats at exposures that would show the true differences between the two cameras, this made it easy for them to come up with the final conclusion they did.

September 5, 2013

Common Snipe in the tall grass

Shot with the D800 200-400 and 1.7 conv

July 23, 2013

I have used the 200-400 F4 II with a 1.7 for about a year and I have no objections in using the combo. I have found that’s it’s a little finicky with AF and you’ll need to tune your AF adjustment for the combo but it’s doable

<a href="http://isfphotography.smugmug.com/photos/i-DjSb3kD/0/O/i-DjSb3kD.jpg">http://isfphotography.smugmug.com/photos/i-DjSb3kD/0/O/i-DjSb3kD.jpg</a>

wide open 650mm F6.7

<a href="http://isfphotography.smugmug.com/photos/i-MH72MFk/0/O/i-MH72MFk.jpg">http://isfphotography.smugmug.com/photos/i-MH72MFk/0/O/i-MH72MFk.jpg</a>

<a href="http://isfphotography.smugmug.com/Other/2012/i-W7MC3xc/5/X3/012_6214s_1sm-X3.jpg">http://isfphotography.smugmug.com/Other/2012/i-W7MC3xc/5/X3/012_6214s_1sm-X3.jpg</a>

<a href="http://isfphotography.smugmug.com/Other/2012/i-98H9cx6/0/X3/013_1646sm-X3.jpg">http://isfphotography.smugmug.com/Other/2012/i-98H9cx6/0/X3/013_1646sm-X3.jpg</a>

July 18, 2013

I work away last night and finished the pano to my liking so here’s the final

July 18, 2013

All shot in raw

July 17, 2013

Thank you for the comments

the biggest slow down was sharpening and down sizing

sharpening took around 2min. just long enough to get some coffee

AMD Phenom IIx6 1055T Processor 2.8 GHz

With 8 gb ram

July 17, 2013

I have fell in love with this camera

This is a first draft of this photo, I have to admit my computer did slow down when combining these photos but it was not that bad.

The original is 45000 pixels wide with one more photo to the left that had to be removed due to cropping problems. Shot with the 200-400 F4 vrII at f5.6

Any CC is welcome

The original scaled down to 25000 pixels

<a href="http://isfphotography.smugmug.com/photos/i-W6V3zF7/0/O/013_6777%202.jpg">http://isfphotography.smugmug.com/photos/i-W6V3zF7/0/O/013_6777%202.jpg</a>

July 8, 2013

Attached is a pixel-level crop from a D7100 image, with the 80-400mm AF-S VR @ 400mm, wide open at f5.6. Perhaps a 400mm/f2.8 AF-S stopped down by 2 stops to f5.6 can produce sligtly better results, but I really can't complain about this optical performance.

</blockquote>

Thats for sure

July 8, 2013

Some old photos from years past

K20d with DA*16-50 F2.8 ND grad filter

K20d sigma 70-200 F2.8

K7 sigma 300 2.8

May 27, 2013

K30 have the metal frame underneath the plastic outer shell like the K5?

Even with the K5 you have to be careful in saying that it has a metal frame under the out frame as the connection between the lens mount and chassis is still plastic.

December 21, 2012

All kidding aside being pinched can really create problems for the owner of the material, if it is ever listed for stock they may freeze your account until things have been straightened out. I had this photo showed up on FB 12 hours after I had uploaded it to my Smug Mug account and guess what I have no active FB account. I am at the point I just watermark everything\

December 12, 2012

Here ya go just to make you feel better ;)

November 30, 2012

Douglas,

I was always after the big guns, over the years I went for 500mm with TC down to just a 300 2.8 and a 1.4 TC. Over the years I had found that added FL really limited me on the places I could take & how I used could that equipment. After selling off all my long telephoto equipment & only keeping my sigma 300 2.8, has fundamentally change how I photograph & has allowed me to take the photographs that I was looking for.

For this year I can count on one hand the times that I have gone above 420mm on a cropped sensor and moving this fall to FF all but 5 photos were taken bellow 400mm.

November 29, 2012

It would be nice to know what dia of collar is need for the 70-200 FA? I have two collars for my sigma 300 2.8 and sigma 70-200 2.8 and it would be nice if by chance they would fit

November 4, 2012

Now with pentax we have a useable ISO range the Sigma 50-500 has become a viable option as a telephoto lens Its surprising the IQ this lens has to offer at its price point. Every once and a while you can find a used nonhsm for $700.00 , this fall I sold my bigma for $500 to a friend

November 4, 2012

There are added features that Nikon and Canon have in their telephoto like focus recall to name one, does the 560 have any of these features? I Know with my 200-400 VrII I can program the lens’s front button ether as a AF, AF-L or memory recall and can also set a focus limiter, these may seem trivial but now that I have been using them for a few months these are a must for a lens in this category.

If it performance is anything like the old *600 F5.6 it would be a welcome addition to the line-up but please to strip it down ( VR would also be nice)

September 30, 2012

Was out and about with the D800 200-400 VRII and newly acquired 1.7 conv and thought I’d see how the comb works. I can see from the start that it’s not going to be my lowlight pick but for general use its going to be a welcome tool in the camera bag. <a href="http://isfphotography.smugmug.com/Other/2012/24844030_dTp3hM"><img src="http://isfphotography.smugmug.com/Other/2012/i-W7MC3xc/0/X2/0126214sm-X2.jpg" alt="" /></a> <img src="http://isfphotography.smugmug.com/Other/2012/i-3H6XC3d/0/X2/0126203sm-X2.jpg" alt="" /> <img src="http://isfphotography.smugmug.com/Other/2012/i-HSqQD2h/0/X2/0126208sm-X2.jpg" alt="" />

September 21, 2012

It was you that jump in when I was showing the K5 and D800 side by side illustrating size differences with 2 formats that are setup to take similar photos with nearly the same DOF FOV illustrating that with equivalent lenses on a FF body on most part are smaller and cheaper and most of the time negating the size and cost of a FF body when a person needs several lenses.

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Posts posted by ian s. forsyth