Panasonic 35-100mm F4-5.6 v Panasonic 14-140mm f3.5-5.6

alcelc wrote:

OrdinarilyInordinate wrote:

Again, please have a look at the SLR gear description; you keep providing examples outside the troublesome window of shutter speeds they noted. We are certainly not off topic--it's relevant to anyone looking into 14-140mm II, which includes the OP.

You mean the following comment?

Quote:

"Shutter-related Blur Problems
... this lens related to motion blur ... on our GX1 test body. When ..... Power O.I.S. disabled ...., ... noticeable motion blur at shutter speeds around 1/40 to 1/50 of a second at focal lengths of 50mm and longer. ..."

Unquote

Beforehand, it is not the usual trouble windows as I learnt from thread on this forum! I'm so aware of the general complaints and never realize it was reported like that! I must confess a little out of my comprehension.

When OIS had been turned off, the tester was indeed shooting with a small non IBIS body, with a not heavy (only 250g, roughly 2/3 of my 45-200) but extended zoom lens (affect the balance of combo) without any sort of stabilization!

I assume you might well aware that if we shoot without stabilization, we better follow the rule of safe shutter speed. A 50mm (eq to 100mm FF) would require at least 1/200" (I'm confidence to make it at 1/100"around) for a steady shoot. It is still not fool proof depending on the shooter and his physical condition (e,g, in a hurry), or using a camera having ergonomic issue. GX1 fits the bill and if the tester didn't put on the VF2 as I must have, I would also concern with steadiness of images even shoot with 14mm! Now the tester found blurred images for 50mm onward at 1/40"~ 1/50" (way slower than the theoretical safe speed). Anything unexpected? Don't overlook one thing, stabilization is not bullet proof.

I had participated into a few threads investigating SS of 14-140 MII (Becasue I just bought it at that time, I must follw the issue to see would I also be a victim). including our dear friend Vesku who lead a major complaint on the over sensitive OIS in video shooting of 14-140 MII (with full respect to his finding). But he always appreciates the excellence of this lens on still images!

Some reviews are good, some might be faulty because of a lot of untold reasons. Sometimes might not be related to the site, but of individual tester. They are not writing a Holy Bible, don't simple take every word they said

The full quote would be:

"We ran into an issue with this lens related to motion blur at certain shutter speeds on our GX1 test body. When we tested it with Power O.I.S. disabled and on our studio camera stand that weighs over 250 pounds, we found noticeable motion blur at shutter speeds around 1/40 to 1/50 of a second at focal lengths of 50mm and longer. Interestingly, while this blur went away at higher shutter speeds, we noticed that it was also largely eliminated when when we lowered the shutter speed to around 1/15 of a second."

The camera was therefore stabilized quite well.

They also found this issue to occur with GX7, which also has a mechanical shutter.

I'm really not trying to argue just to argue for fun, I'm just get a little frustrated when people try to provide proof but consistently either don't present the relevant findings or present selected evidence that doesn't show the full picture. I'm sure it's a good lens, and I'm not at all trying to talk it down--I'm actually interested in it, so I've been doing my research trying to figure out if I'll run into trouble.

To be fair, many of the newer (and lighter) zooms seem similarly affected to a certain extent... I imaging the exact shutter speed range will vary depending on the body/lens combo, trying to claim a particular exemplar isn't affected without a comparison using e-shutter/EFC seems like more trouble than it's worth tho.