First images with the 120-400mm


cardiffgareth

Link Posted 12/05/2022 - 21:09
Finally! Some action here at St Athan. We had a Puma in as well as a USAF Osprey. Both weirdly were not on 360Radar. Anyway, here are the first proper test images with the Sigma 120-400mm. First impressions is that it's a sharp lens but it did hunt a bit during continuous AF. Might try spot AF to see if that helps.

All with the K1

1.

RAF Puma by Gareth Williams, on Flickr

2.

RAF Puma by Gareth Williams, on Flickr

3.

USAF Osprey by Gareth Williams, on Flickr

4.

USAF Osprey by Gareth Williams, on Flickr

5.

USAF Osprey by Gareth Williams, on Flickr

6.

USAF Osprey by Gareth Williams, on Flickr

7.

USAF Osprey by Gareth Williams, on Flickr

8.

USAF Osprey by Gareth Williams, on Flickr
Gareth
Welsh Photographer

My outfit: K1 gripped - K3ii - two Z-1P - Pentax D FA 24-70mm - Sigma 70-200mm OS HSM - Pentax modified DA* 60-250mm f4 - Irix 15mm Firefly - Pentax FA 35mm - FA 50mm - Sigma EX 20mm - FA 28-70mm f4 - Tamron SP 90mm macro - Pentax AF 540 FGZ II

My Flickr
My PPG
Foundation NFT

bforbes

Link Posted 12/05/2022 - 22:27
Looks like a good combination.
Barrie
Too Old To Die Young

http://www.pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/

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1stEverPentax

Link Posted 13/05/2022 - 23:35
Pleased for you that you finally got your Osprey Gareth.

Nice sharp images on the ground shots.

The airborne shots could do with a slower shutter speed if you want to capture rotor/prop blur. These Ospreys are quite tricky to capture well at the best of times...i've
found you need to go as low as 1/125 - 1/250th really...easier said than done if you want airframe to remain sharp and even harder at low airspeed where it is even harder to pan effectively than it is at a higher aircraft speed.

Should imagine with a bit of practice that lens could be quite a useful focal range.

Nice challenge for you with the airshow season fast approaching!

Good luck

Karlo

Daronl

Link Posted 15/05/2022 - 13:03
Sigma 120-400

Had the Sigma for a while but found the Af somewhat erratic on moving subjects sometimes even on large birds like herons that are relatively slow and pendulous in flight

Also in static conditions, if light wasn’t optimum it was randomly but unquestionably unsharp on times

Never the less I persevered and have some decent shots despite my interest being mainly birds and sport.

I aquired a 2nd hand Nikon D500 with a Nikon zoom; The D500 being considered the quickest AF out there.

The camera did not disappoint but the Nikon lens was decent but not premium in IQ terms.

When I bought the DFA 150-450 HD it was a totally different ball game even with the often challenged AF system of the K1, I was getting some very sharp images images of BIF

However Fitting it on a K3.3 is as good as it gets (as far as long telephoto zooms go), best described as pretty faultless all round with an almost perfect hit rate.

Hence I sold the Nikon gear and the Sigma lens.

However Sigma is a brand I like and without doubt my sharpest indoor-sports lens without comparison is the Sigma Art 35mm F1.4 on the K1, paired with the K3.3 and the faultless DA* 200mm f2.8 - these two lenses are the standard in sharpness and resolution for me.

Going back to the Sigma 120-400 though, I would stick at it on aviation subjects but consider giving it a go on a Pentax K3.3.
Daronl

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Chrism8

Link Posted 15/05/2022 - 13:26
Daronl wrote:


When I bought the DFA 150-450 HD it was a totally different ball game even with the often challenged AF system of the K1, I was getting some very sharp images images of BIF

However Fitting it on a K3.3 is as good as it gets (as far as long telephoto zooms go), best described as pretty faultless all round with an almost perfect hit rate.

Totally agree
Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8

Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8

K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM
Last Edited by Chrism8 on 15/05/2022 - 13:26

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cardiffgareth

Link Posted 17/05/2022 - 13:38
Thanks all. Literally just had a A400 Atlas on the go around. Used the K3ii in the garden and it's not a fast moving plane but noticed about 60% were binners!

It's much better on the K1. Thought the extra reach of the crop sensor would be better over using the K1 in crop mode as more pixels but I think I'll bin that idea
Gareth
Welsh Photographer

My outfit: K1 gripped - K3ii - two Z-1P - Pentax D FA 24-70mm - Sigma 70-200mm OS HSM - Pentax modified DA* 60-250mm f4 - Irix 15mm Firefly - Pentax FA 35mm - FA 50mm - Sigma EX 20mm - FA 28-70mm f4 - Tamron SP 90mm macro - Pentax AF 540 FGZ II

My Flickr
My PPG
Foundation NFT
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