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K10D

Joined: 16th January 2009

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K10D
MarkTaylor wrote:
The 645D's sensor is not a crop sensor, it is a "medium format" sensor. Although it still technically has a "crop factor" (albeit of less than 1 because it's larger than 35mm film) this can more correctly be referred to as a "focal length multiplier" to avoid the confusion - or alternatively for anybody who doesn't know what a focal length multiplier is, make it worse.
A medium format sensor is 56 x 41.5mm, the Pentax sensor is 33x 44mm.

645 was the term used based on the 60 x 45mm nominal format.

Best regards

Comment by K10D posted on An open Letter to Ricoh at 21/08/2011 - 19:39

K10D
Note to self, don't post early morning unless spelling is checked - get some "fealing". George must be away?

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Comment by K10D posted on South Fremantle Power Station - image heavy at 15/08/2011 - 01:55

K10D
Very good images. No.2 for me. Good colour and framing.

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Comment by K10D posted on Damsel and Dragonfly at 15/08/2011 - 01:09

K10D
I saw Rachels bucket and thought it worth a shot. I did not touch the scene and hence the small branch is still in front of the bucket. I tend not to interfere with a shot where possible.

Rachels bucket

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Not a Honda fan but this CBR looks cool.

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side street book shop

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Comment by K10D posted on Rachels bucket, CBR & 48 at 15/08/2011 - 00:51

K10D
Finally called in to do a pre-shoot test and check out the area.

link

I used the 21mm on the K7 to get some "fealing" for the types of shots available. I will use a wider lens and tripod on another shoot.

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These are quick hand held "snaps". This location is a must return, to get some better framed images on wider glass. Many many togs cover this place so it can see a lot of activity.

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Comment by K10D posted on South Fremantle Power Station - image heavy at 15/08/2011 - 00:36

K10D
Frogfish wrote:
K10D wrote:

I would definitely recommend the 21mm Pentax as a better "journalist and landscape" lens, though it is slightly slower, it has AF.

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You are off-setting AF/Ltd appeal vs. MF/speed/price. It's a decision that many will ponder. FWIW when you get to these FLs then AF is not absolutely necessary except in a limited number of situations anyway, and the artistic possibilities of a 24/1.4 lens are a very interesting bonus (the Samyang's are known for being very sharp wide open) as well as low light use (a huge 2+ stop difference to f3.2).

It's pretty easy to have a virtual AF lens anyway, setting the lens up at f8 and focussing at 4.5m gives you a DoF from 2.5m to infinity, at f5.6 focussing at just over 6m gives you a DoF from 3m to infinity, so you are hardly ever going to have to change those settings, whilst in the field, for landscapes / architecture / maybe some street too.
Yup, I used to use hyper focal settings many years ago. I was also thinking of the extra field of view of the 21mm over 24mm. As you say, 2 stops advantage to the Samyang.

Oddly enough I was out today using a 14-24mm on a cropped sensor. Amazing images, no distortion over an effective 21-36mm FOV. Still used AF as it locked on solid every shot.

As for the Samyang, it should be an excellent lens and great if you want to shoot at f/5.6 or f/8 without having to focus but may need some effort if you want quick shots at f/1.4.

Best regards

Comment by K10D posted on Samyang 24mm f1.4 at 14/08/2011 - 15:13

K10D
A good set Mark. Plenty of colour and look at that light, not a sunbeam anywhere! First thing that struck me is that No. 2 was you?

I am on board 100% with the 17-55mm but I would have had a 70-200mm on another body (that's basically my minimum street kit). Not saying that you should do the same of course but only for info.

My pick of the bunch is No. 7.

Only advice overall, maybe some fill flash for some of the shots.

Great coverage of a great event.

Best regards

Comment by K10D posted on Edinburgh Festival Fringe 2011 - Street Performers etc. at 14/08/2011 - 02:39

K10D
Pentaxophile wrote:
K10D wrote:
f/2? I know you meant f/1.4
I was alluding to the fact that f1.4 on APSC won't appear as shallow as it does on full-frame.
That's a whole new chestnut....

Nearly leads into the benefits of FF or a D645....

Lets hope that the K4 or K3 is FF. The new K2 is the one to wait for though.

Best regards

Comment by K10D posted on Samyang 24mm f1.4 at 13/08/2011 - 14:13

K10D
johnriley wrote:
Perceptions change of course and it's time we ditched the "35mm equivalent" notion perhaps.
Probably right John as far as Pentax DSLR's are concerned. The other three players don't need to. Maybe better to use FOV as it covers all sensor sizes.

Pentaxophile wrote:
It's a big lens, but getting the FF equivalent of 35mm/f2 on an APSC camera is quite appealing for those of us who like DOF control and bokeh etc, but can't afford / don't want a Nikon D700.:
f/2? I know you meant f/1.4

It looks a good lens and fortunately it is chipped to meter in all modes for Nikon which is good news for those that do want to use it on a Nikon body.

Best regards

Comment by K10D posted on Samyang 24mm f1.4 at 13/08/2011 - 13:22

K10D
Cuchulainn wrote:
One thing to remember is that a good monopod doesn't need to be used on the ground to help. I've had some success with panning shots at airshows by resting the monopod in its collapsed config on my belt and then panning with my whole body.
On a similar note, when covering golf, I use a small rod butt belt similar to this link

I find it more stable and no dirt on your clothes from the ball or spike end of the mono pod.

Comment by K10D posted on monopod suggestions? views on using them? at 13/08/2011 - 02:17

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