Indrajeet Singh Loc: Goa, India

Confident with the capability of the lens, I moved into other areas where I tested for performance under some of our difficult(ish) conditions. Though the avian life in India is awesome, the birds are shy and difficult to approach. Waiting is often times the most rewarding and speed is of essence because they are always so busy and the moments to capture are often very brief.

It is important therefore, that your gear is set up for such situations and also that the auto focus system is able to accurately focus in an instant. It is not unusual to suffer a lens hunting to find the subject. Deep shadows, reflected light and bright foliage are the reason for this. Result, lost images.

I was keen to see how well the Tammy worked in some of these situations. Other considerations included sharp results at “as wide an aperture as possible” and at respectable ISOs and low shutter speeds. Alongside, focus tracking requires to be strong to follow the bird as it disappears behind foliage and twigs and leaves. I know I am asking for a lot, but if I am able to get these I am a happy chappy!!

All shot at 500mm in DX 1.3 crop equaling 1000mm effective crop. Tripod mounted.

ISO 640 / SS 1/60 f9


ISO 640 / SS 1/50/ f9


ISO 640 / SS 1/100 / f7.1


ISO 1600 / SS 1/125 / f6.3


ISO 1250 / SS 1/80 / f6.3


ISO 400 / SS 1/320 / f6.3


ISO 200 / SS 1/100 / f6.3


ISO 400 / SS 1/400 / f6.3

Bill MN Loc: Western MN

Why are you shooting at 500mm? I'd like to see some at 600mm.

jwt Loc: Texas Hill Country

Fabulous images Indrajeet, it appears that the 1000 effective crop was just what you needed for these. Great job. :thumbup:

Homer60 Loc: Lyons, Illinois

All very nice was it raining for the first 4?
Shooting at only 500mm of the 600mm possible to prevent softness?
Curious as I have seriously considered acquiring the Tamron 150-600mm

Indrajeet Singh Loc: Goa, India

Thank you Bill. I found that the images with this lens softens after 550 and is very good at 500mm. Images are acceptable at 600mm at apertures of f9 and f10. I prefer to stay where I know it is comfortable.

Indrajeet Singh Loc: Goa, India

Thank you Jim, worked very well I must admit. Excellent lens, which suits me because it is light and easy for me carry around.

Dan L Loc: Wisconsin

I always enjoy your great work and thanks for sharing Indrajeet Singh!!!

Indrajeet Singh Loc: Goa, India

It's a good lens. Yes, I did find that 500 is very good and better than 600. Thank you for looking.

Indrajeet Singh Loc: Goa, India

Sorry Mike, yes it did rain and so made it more challenging because it turned quite dark.

Cheers!

Indrajeet Singh Loc: Goa, India

Many thanks Dan.

Bill MN Loc: Western MN

Thank you, that's what I wanted to know. I'll stick with my 500mm Sigma unless someone can show me the new Sigma 600 is sharp at 600mm.

halman Loc: Foothills of Colorado

Wonderful shots!

Indrajeet Singh Loc: Goa, India

I believe all similar lenses will have a sharpness issue at the full focal length.

Indrajeet Singh Loc: Goa, India

Thank you very much.

Erv Loc: Medina Ohio

Outstanding as always Micki! But that is not fair changing lenses again and cameras. I am just getting a handle on the D600 and the 80-400. So now I have to save up more pennies?? :):)

On a serious note. I know hard to believe right! With the 7100 you are shooting at 750. But with the 610 and the 80-400 and a 1.4TC you would be shooting at 600 or using a 1.7 TC which would put you out to 680.. Can you see a big difference in these two as far as sharpness comparing it to the Tamron?

And on a weird note. I have yet to try the 80-400 on my D300s. How dumb is that.:):) Guess I am headed outside now!
Erv