TC1.4 + Sigma 100-300 f4

Lenses for Pentax CamerasLenses for Pentax Ca...

256 posts
9 years
Dublin

Posted 04/11/2019 - 18:48 Link

Hello All,

By any chance anyone using Pentax tc x1.4 with Sigma 100-300 f4 ?
I seen many reviews about tc and da 300f4 but can't find anything about Sigma.
If anyone give me any advice about Sigma 100-300 and Pentax tc x1.4 I will by vary thankfull.

Thank you.

Pentax ME-F, MZ-3 RIP, MZ-S, K-1
Irix 15mm F2.4, Pentax D-FA 24-70mm F2.8, FA 31mm F1.8 Ltd, FA 43mm F1.9 Ltd, FA 77mm F1.8 Ltd, Sigma 100-300 F4 + TC 1.4x, AF 540 FGZ
Ricoh GR III
Hitech-Formatt 10% off all filters code - CIEJ10

reso reso

1421 posts
14 years
worcestershire

Posted 04/11/2019 - 20:11 - Helpful Comment Link

Drop Mike p a message he has had a sigma 100-300 and used it with a pentax 1:4 converter

k5iis k3ii sigma 10-20 hsm tamron 17-50 pentax faj 18-35 pentax da 18-135 tokina 20-35 tokina 28-70 atx pro pentax dfa 100 wr
pentax da*50-135 pentax da plm 55-300 sigma apo 150-500 hsm os
Pentax af aw 1.4 rear converter and a flash

Chrism8 Chrism8

1999 posts
14 years
St Austell,
Cornwall

Posted 05/11/2019 - 07:21 - Helpful Comment Link

I've had a Sigma 100-300 for about 25 years, its one of the early ones with the peeling paint, but the optics are superb and and its a cracking lens, I've used mine on film camera's as well as a K5ii / K3ii and a K1, I have had it with the matched 1.4 TC but with digital I prefer to crop and keep the maximum aperture.

The lens hooked to the K3ii is my go to setup for aircraft, particularly the Mach Loop or sat at the end of the runway at Brize Norton.

K3ii - Sigma 100 - 300 F4 @ 200mm - F20 - 100 ISO - 1/80 sec

K3ii - Sigma 100 - 300 F4 @ 100mm - F5.6 - 3200 ISO - 1/2000 sec

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, Pentax A 50mm F1.2

K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM

Irek Irek

256 posts
9 years
Dublin

Posted 05/11/2019 - 08:55 Link

Hi Chris,

Are You using Sigma 100-300 with Pentax tc x1.4 ?

Thank you.

Chrism8 Chrism8

1999 posts
14 years
St Austell,
Cornwall

Posted 05/11/2019 - 10:10 - Helpful Comment Link

Not any more, prefer to maintain F4 and crop as required.

Irek Irek

256 posts
9 years
Dublin

Posted 05/11/2019 - 10:21 Link

I understand, but Pentax tc it works fine with sigma 100-300 yes ?
I want to know if AF works fine.

Edited by Irek: 05/11/2019 - 10:36

Mike-P Mike-P

13625 posts
16 years
Hythe,
Hampshire UK

Posted 05/11/2019 - 12:03 - Helpful Comment Link

AF works ok (obviously not as good as withought though) and unlike the Sigma teleconverters it even reports the correct focal length in the exif for image stabilisation. Remember it's not a full frame converter though so if it's for the K-1 you have to shoot in crop mode. Works extremely well on the K-3II.

Click on pics for decent quality.