HarveyG Photography

According to this MF photographer, there are limitations…

After receiving a newsletter from DP Review about the Phase One Mamiya – Leaf tie-up , one commentator, kb2zuz; (Kurt Heumiller)-USA, who shoots for the Yale Center for British Art, with a Hasselblad H3D-II 39 MS and H4D 50 MS, had this to say about the Medium Format  debate (added below for those without restricted internet access):

What are the mythical advantages of sensor size (or the often related larger pixels)? Less noise, better dynamic range, shallower depth of field. I work with an H4D every day, … I can tell you this, at anything over 50 ISO it has worse noise than any 35mm “full-frame” digital I’ve seen. It has only slightly better dynamic range (and again, that’s only at 50 ISO). Yes with the 120mm f/4 lens it will have a shallower depth of field than an 85mm lens on a full-frame at f/4, but you can get f/1.2 lenses for full-frame. Most MF lenses are f/2.8 or slower, there’s a couple f/2.2 lenses… so there goes the DOF advantage. I use medium format every day and there are reasons for it: multi-shot uninterpolated images, no AA filter, and high megapixels. That’s about it.

I’m no expert on MF, but I’ve long thought it would be better than FF or APS-C in all regards, at that sensor size, and I’ve seen jaw dropping images by MF photographers, but there are other factors I should have taken into consideration, (continue reading…)

I recently noticed a few shots online that had the dreaded dust bunnies in them and this prompted today’s posting. Note this only applies to DSLR or Medium Format with interchangeable lenses and mirror mechanisms, not to your mirrorless Point and Shoot or Bridge Camera UNLESS they have interchangeable lenses where the sensor is visible and prone to contamination.

A few days after I bought my Tokina 12-24mm f/4.0 ATX Pro DX, I was at the coast. With the intention to do UWA scapes with the D80 (It’s ISO 100 and long exposure is superb on the CCD). The camera is seldom used and I also rarely remove the Sigma 28-70mm f/2.8 that’s on it. Less lens changes, less dust, or so the theory goes. Camera has done under 6000 images in 4 years.

So I get up at 4am and head off to the local lake district in Sedgefield for a few pre-dawn landscapes. Take a few shots, chimp at the screen. Everything looks awesome (LCD’s always make everything look awesome…)

Get back to the apartment and fire up the laptop, offload the images…enlarge…and there they are…”dust” bunnies.

King Fisher River Lagoon - Dust Bunnies - Click Image for full size - Blue circle is a "Hot" Pixel - more on that in another posting.

What a waste of time! No wait, I can clone them out in PP. But still, what a waste of time if I had just spent a bit more time on checking the SENSOR pre-shoot. I honestly thought that because I rarely remove the lens (continue reading…)

Canon's 120Mp APS-H Sensor

Canon successfully develops world’s first APS-H-size CMOS image sensor to realize record-high resolution of 120 megapixels.

TOKYO, August 24, 2010—Canon Inc. announced today that it has successfully developed an APS-H-size^*1 CMOS image sensor that delivers an image resolution of approximately 120 megapixels (13,280 x 9,184 pixels), the world’s highest level^*2 of resolution for its size.

Compared with Canon’s highest-resolution commercial CMOS sensor of the same size, comprising approximately 16.1 million pixels, the newly developed sensor features a pixel count that, at approximately 120 million pixels, is nearly 7.5 times larger and offers a 2.4-fold improvement in resolution.^{*3 /} Read the full Press Release here.