jeanphilippe Goube

Hi, if your goal it to have more reach with your 70-300 mm, I would say no, because teleconverter needs a fast lens. At 300 mm your lens wide open will be a 420 mm f9 with a 1,4 X TC and I doubt ...

What worries me in the D5, apart the cost and noise, is that according to DXO sensor measurement the D850 has better DR up to 2500 iso. And I seldom go above 2500 iso... The low pixel count of the ...

I'm currently using the D850 and the D500 as wildlife cameras. I wouln't upgrade for the D5 as I find the resolution too low. In low light, if I must raise iso I know that with the D850 I have ...

Yes she use the sigma TC 1,4 sometimes. There was no need to fine tune the AF. Honestly I'm used to Nikon exotic lenses and I am amazed by the Sigma IQ.  It is on par with the Nikon; the Nikon is ...

A friend went for the sigma last year, she is very happy and doesn't complain about AF issues. From what I see from her picture I don't notice any AF issue

Well I don't understand why both lenses are not stopped down more (at f5 here). There is too little depth of field, many items blurred because out of focus, so difficult to get get the advantage ...

I'm in love with the Zeiss milvus series. My fourth (the 35 f1.4) is on the way to be delivered today. After the 18, 25 f1.4 and 50 f1.4 According to your gear list, try the milvus 25 f1.4. It is ...

Well even with EFCS the mechanical shutter must open at one moment. I confess that I don't kown exactly how the sequence of opening the mechanical shutter and then triggering the EFCS is designed, ...

Same here. I have the 400 f2.8 E and the 800 f5.6 and would have appreciated to have a 500 mm... Anyway the 400 + 1,4 X TC is really great.

Me too. My understanding is that the Mirror movement is slower than in S or C mode, so less vibrations induced. I have made experiments on a tripod with a loooong lens and the diffrence is visible ...

Very true. Thanks to remember us. IQ is very good now on all cameras.... is IQ of the K1 better than IQ of a Nikon D850 ? I don't think so. And certainly a lot behind an hasselblad camera

There is a new version of the 200-400 (with incorporated TC). This may change drastically the comparison (and stress your wallet too...)

Certainly not, some lens have a sweet spot at f4, or f5.6, and IQ decreases when you stop down further. But I had the same thought as you. I Wonder why the lens wasn't used at f8.  I assume that ...

Thanks, I'm not familiar with using a TS lens. How does shift improve perspective for this kind of image ? I thought that it was useful to correct perspective, ie architectural shots

I have one and I must say it is very difficult to get sharp images handheld. For that purpose I have bought a harness and a monopod.

Nice capture; but was the titl /shift functionnality of this lens used for this shot ? I don't think so ?

I would like an in body image stabilisation, like Pentax K1. Usefull for non VR lenses

I can't compare with the K1, but with the K3 - and all other Pentax bodies I have owned, K5ii, K7, ... I think K1 AF is very close from the K3 though. Now I own a Nikon D500 and a D850 It's not ...

with a fast lens (f2.8) a good TC gives pretty good results. Have a look here https://photographylife.com/reviews/nikon-400mm-f2-8e-vr Bullet 6 performance with TC 1.4 ocnverter or 18 compared to ...

Hello Mike, precisely in the past, relying only on the test reviews like Lenstip I bought the 50 sigma Art... which I sold last month to replace it by the 58 G. I simply didn't like the rendering ...